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Zaccaria/Associated Leisure Hyper Sports Restoration

Background

This game I acquired from a fellow collector as part of a trade deal shortly before I left the UK for the US. The game has a printed Associated Leisure label on the inside and is likely a Zaccaria Universal cabinet AL configured to operate Hyper Sports. This style of cabinet was the last that Zaccaria produced before the factory closed. Some of these cabinets were sold as Tecnoplay cabinets when Zaccaria transitioned to become Tecnoplay.

01/09/2013 - Initial assessment

Zaccaria/Associated Leisure Hyper Sports - left Zaccaria/Associated Leisure Hyper Sports - front Zaccaria/Associated Leisure Hyper Sports - right Zaccaria/Associated Leisure Hyper Sports - back

The outside has a layer of soil-like dirt over everything and there are bird droppings on the front glass. My guess would be that's it's been stored in a barn for a while. It has it's back door.

Zaccaria/Associated Leisure Hyper Sports - control panel Monitor glass bubbling - left Monitor glass bubbling - right Foot rest separation

The control panel overlay has been significantly peeled away on the right side. It could do with a new one. The buttons all seem to be OK except for a small amount of cig burn staining. The marque appears to be in reasonable shape. The monitor glass is bubbling at the edges of the marque assembly and has worn away along the edges where it contacts the wooden frame (likely the usual foam spacers have rotted away long ago). The monitor glass bracket is very rusty and peeling. The foot rest has come away from the cabinet but doesn't seem to be too badly damaged. Should be repairable.

Zaccaria/Associated Leisure Hyper Sports - front, top Zaccaria/Associated Leisure Hyper Sports - front, bottom

The coin door looks to be OK and complete - the center position has been loaded whereas in other AL cabinets it has been used to display the license seal. The coin door still has the red Zaccaria label intact. No key for the cash box or the back door (there was a key for the coin door) but the barrel for the back door was loose enough to turn to open it.

Associated Leisure label No game pcb

As noted before there is an Associated Leisure serial number label behind the coin door. The game board and mounting plate are missing.

Zaccaria/Associated Leisure Hyper Sports - inside Hantarex MTC-900E monitor Zaccaria credit board & coin counter Game board connector

Inside appears complete and wiring intact except for the game board. Even the safety curtain for the monitor is still present.

Inside bottom Marque light assembly - back Hantarex MTC-900E monitor

There is *a lot* of dirt in the bottom of the cab underneath which is an IGR Elettronica MI 010 power supply. The marque assembly seems to be in a self-contained frame with ballast & starter on the back side. The monitor is a Hantarex MTC-900E that looks complete and in good physical condition though the power to it has been unplugged. The cabinet has stereo speakers fitted with stereo wiring for them. There is also a random piece of wood from somewhere.

Control panel back

The back of the control panel buttons and wiring all look complete and original.

Zaccaria/Associated Leisure Hyper Sports - front, cleaned

I gave the front a clean with a damp cloth to start with.

02/09/2013 - Initial cleaning

IGR Elettronica MI 010 power supply IGR Elettronica MI 010 power supply - before cleaning IGR Elettronica MI 010 power supply - after cleaning

Given the large amount of dirt in the bottom of the cab I suspected the IGR power supply might be full of dirt. I wasn't disappointed. A few minutes blasting away with an aerosol duster in the back yard cleared it all out to leave something that looks in good physical condition.

Cabinet bottom before cleaning Cabinet bottom after cleaning

The camera flash makes it look less dirty than it was. A full size vacuum cleaner with a good set of attachments got rid of most of the dirt.

02/09/2013 - First power on

Fitting the IEC C14 240V power plug Life in the monitor Free running scan lines

Adding the 240V IEC C14 power plug and reconnected the IGR power supply for first power on test. With the monitor disconnected first power on yielded no coin door lights or marque lights. However, the AC voltages all measured good - 220V on the marque connector, 220V/128V on the monitor connector and 6.3V on the coin door lights. Likely all the coin door lamps are burnt out and the marque light is blown. Plugging in the monitor yielded a white screen of scan lines with no obvious cap venting, smoking or arcing. A good start!

Since I know from experience that the IGR power supply will run overvoltage with no load and that it has no overvoltage protection I decided to not try a game board in it yet until I can verify it's working properly. I've had cases where it can be faulty and drop the raw switch voltage onto the outputs :(

Extra wires

There are four extra wires part way down the wiring harness with exposed ends. On investigation, two were for the extra speaker, one was -12V (not used on Hyper Sports) and the other was unknown but seems like it's all original.

02/09/2013 - Control panel part 1

Control panel angle Control panel angle Control panel angle

It needs a new control panel overlay. No getting away from it :( The plan is try and scan what’s left and find someone to repro it.

Control panel open Switches and mounts labelled for later
Parts saved for later Control panel blanked - back Control panel blanked - front

Labelled all the switches, buttons and spacers for ease of reassembly when the time comes. I tried using a heat gun to see if it was possible to get the overlay off in one piece so that it could be scanned in more easily but it's like peeling off eggshell - cracks and breaks apart far too easily for that after 30 years :(

04/09/2013 - Control panel artwork

Hyper Sports control panel overlay, left Hyper Sports control panel overlay, right
Hyper Sports control panel overlay, left Hyper Sports control panel overlay, right
Hyper Sports control panel overlay, left Hyper Sports control panel overlay, right
Hyper Sports control panel overlay, motif

Scanned in the Hyper Sports control panel overlay.
300 DPI Hyper Sports control panel overlay scan (40.7MB).

06/09/2013 - Monitor glass artwork

Hyper Sports with monitor glass removed

Removing the glass revealed the monitor surround in OK condition aside from the usual layer of dust & dirt and sagging at the top.

Hyper Sports monitor glass reverse Hyper Sports instruction sheet

The design of the glass allows for a mini marque at the top and an instruction card at the bottom. In this cabinet the instruction card window is blanked. Both marque and instruction blank have been additionally taped with masking tape. The original sellotape on the sides of the marque has caused the corresponding strip of glass art to delaminate (see close-up above) :( I'm not going to attempt to remove anything and will leave as is.

The instruction sheet on the cardboard surround has a square of fireworks artwork behind it. The cab has fireworks side walls and there are versions of the cab with a fireworks surround. Maybe the original surround has been replaced?

Hyper Sports monitor glass, top left (V) Hyper Sports monitor glass, top right (V)
Hyper Sports monitor glass, bottom left (V) Hyper Sports monitor glass, bottom right (V)
Hyper Sports monitor glass, top left (H) Hyper Sports monitor glass, top right (H)
Hyper Sports monitor glass, bottom left (H) Hyper Sports monitor glass, bottom right (H)
Hyper Sports monitor glass, marque

The glass is just a bit too wide to scan in four parts in either dimension so it's scanned in both portrait and landscape to cover it all. I also did one complete scan of the mini marque.

Scanned in the Hyper Sports monitor glass.
200 DPI Hyper Sports monitor glass scan (21.9MB).

07/09/2013 - Monitor surround cleaning

Original staples

Lurking under the monitor surround are the original staples from the original surround - it has been replaced and it would have had the fireworks surround originally. The replacement doesn't look like a home made one and fits perfectly.

Monitor surround, dirty Monitor surround, clean Monitor surround, flattening

The surround was so thick with dust that I actually had to vacuum it first before attempting to wipe it over. This is the dirtiest cab I've seen so far.

Monitor cleaning, before Monitor cleaning, after

Vacuumed and then cleaned off the remaining dirt from the monitor glass, frame and woodwork.

08/09/2013 - Marque light

In cab, jammed In cab, wiring On bench, fixed

The marque light bulb wouldn't twist out and appeared jammed half way between out and in. Further, attempting to widen out the end sockets enough to try and unplug it from one side then jammed one pin out but not the other :( In the end I had to remove the whole unit and pry out the bulb on the bench. Once released, the end sockets unseized OK and the bulb had an open heater on one side. After a little bit of exercising of the end sockets and a new bulb the marque light was working again.

10/09/2013 - Monitor glass bar painting

Before After cleaning

The steel bar holding the monitor glass in place at the top was rusty with lots of bubbling and flaking paint. I usually leave the wood and metal as is but this one was a bit too far gone to not do something about it. The first step was to use a scraper to remove the remaining paint and then sand it down to remove the loose rust and key it for the primer.

After primer After top coat

No issues with priming or the top coat. The matte paint I thought would not match the semi-gloss of the original but on the smooth surface of the metal it came out a good match for the original.

10/09/2013 - Instruction sheet restoration

Before After processing

My son volunteered to help process the scan of the instruction sheet into a reasonable cleaned up image to print a new one since my art skills are pretty poor.

Scanned in the Hyper Sports instruction sheet.
300 DPI Hyper Sports instruction sheet scan (9.7MB).

13/09/2013 - IGR Elettronica power supply repair

Load testing Diagnosis Burn in testing

The Amp Mate-n-Lok connectors arrived along with some 10W resistors to build a dummy load assembly for testing the IGR switched mode power supply. No +5V but +12V, -12V and -5V working OK. Poking around with a meter showed no switching output from the TL494. Replacing it brought back the +5V and it was still running OK after a couple of hours on the dummy load.

14/09/2013 - Konami Instruction Manuals

Konami Instruction Manuals Konami company letter & card

Needing a set of Hyper Sports schematics I dug out a Konami Instruction Manuals folder I acquired. Not sure where I got this from but it was in the US.
This is the full resolution picture of the enclosed letter above.

Hyper Sports & Kicker Circus Charlie & Gyruss Mega Zone & Mikie
Pandora's Palace & Road Fighter Roc'n'Rope & Rush'n'Attack Super Basketball & Time Pilot
Time Pilot '84 & Track & Field Yie Ar Kung Fu

A lot are copies but they all at least cover the DIP switch settings and include schematics. For this project it's the Hyper Sports schematics that I need.

15/09/2013 - Game PCB repairs

Hyper Sports PCB Hyper Sports PCB

A friend in the UK sent me a couple of faulty Hyper Sports PCB's to try and get working for this cab. The first one had no sync and a missing colour due to a missing edge connector finger. Clearly the sync is faulty but both the 504 & 082 customs checked out OK. Swapping with the other board that had bad graphics indicated both top and bottom were faulty and the single beep tone from the speaker hinted at bad sound to boot. Put this one to one side for now :(

Hyper Sports PCB, bad title graphics Hyper Sports PCB, bad weight lifting graphics

The one with bad graphics appeared to be otherwise working fine. The issue seemed to be that the title screen and the backgrounds to weight lifting and skeet shooting were missing though long horse was fine. The score and crowd/flags were also OK. Some poking around with a scope found sometimes floating data on the character ROMS due to sometimes missing OE. The VRAM had already been replaced before (and checked out OK). Forcing OE always active brought junk graphics back in the missing areas. Forcing the relevant data line low was also stored and output from the VRAM. It all seemed to be working fine, just bad data getting written into the VRAM. Last ditch I changed the LS245 but no change. I began to wonder if this was something to do with the 27128 masked character ROMS whereas the other set had 2 x 2764. In that configuration the character map would have the wrong address space with a gap between them...

Hyper Sports top, Hyper Olympics '84 bottom Hyper Sports top, Hyper Olympics '84 bottom Hyper Sports top, Hyper Olympics '84 bottom

Sure enough, swapping the data bus bits brought back the missing graphics and enough of the title screen to see the problem - the video board is from a Hyper Olympic '84 that's incompatible with the Hyper Sports top board. The next step is to figure out the correct ROM set.

Hyper Olympics '84 video board Hyper Sports video board

The two video board configurations side by side. Note the character ROM configuration towards the bottom, center-left.

21/09/2013 - Monitor surround

Monitor surroud fitted

Refitted the flattened and repaired monitor surround back into the cab. I coated the tube with cling film to prevent finger marks and dust collecting on it whilst the front glass is out (it'll stay out until the control panel is restored).

Monitor glass spacers

Since the original glass spacers had rotted away I made up some replacements. The spacers keep the glass from rubbing against the rough wood, damaging the artwork. In this case the glass already has some missing artwork at the edges so I coloured the spacers with a blank marker so the holes are less visible.

Instruction sheet fitted

Glass spacers and repro instruction sheet fitted.

21/09/2013 - Power on!

Edge connector repair - before Edge connector repair - after Super Basketball installed for test

The edge connector was in pretty good condition, only missing the insulator from a repaired 12V connection. Simple repair. For power on I went with the Super Basketball to test with first in case anything nasty happenned.

Power on, bad monitor

Marque & coin door lights came on fine and the game sounds were playing but still a bright white screen of raster and no sign of any game video :( In fact, neither the brightness/contrast had any effect and the LOPT screen control full low still left a bright white screen The monitor chassis was faulty :(

22/09/2013 - ROM set investigation

Looking through the MAME driver for Hyper Sports listed only two official Konami editions - Hyper Sports (Centuri license) and Hyper Olympic '84 (Konami). Since this cabinet is a UK released cabinet it seems unlikely that it would have had a US Centuri licensed game in it. The feeling was that there must be an official Konami edition of Hyper Sports (none-Centuri). Looking at the ROM set on one of the UK PCB sets showed a complete set of Cxx ROMS except for one Fxx ROM. Dumping all the ROMS lead to the following table that describes the Hyper Sports (Konami) release of the game:

Hyper Sports
(Centuri)
Hyper Sports
(Konami)
Location
Label MAME Label MAME Location
C01 c01 C01 c01 G5
C02 c02 C02 c02 G7
C03 c03 C03 c03 G9
C04 c04 F01 4.11g G11
C05 c05 C05 c05 G13
C06 c06 C06 c06 G15

Basically, the "world" version of Hyper Sports without the Centuri license just has one ROM difference from the US Centuri "C" monikor set, location G11 on the top board that happens to be the same image as the one from the MAME bootleg set and has an "F" monikor. All the remaining ROMS are the same as the "C" monikor set on both top and bottom boards. For reference the "E" monikor set is the Hyper Olympic '84 edition. I've confirmed on two boards from the UK that this is a real edition of Hyper Sports at least for the UK market and it's likely this edition was the one that would be in this cabinet.

24/09/2013 - Version conversion

Data IO UniSite programming Hyper Sports conversion ROM set

I programmed up a set of character ROMS to convert the Hyper Olympic '84 bottom video board to Hyper Sports and a new program ROM to convert the Centuri top board to be none-Centuri Hyper Sports. The latter needed a 27128 image making from the two relevant halves present in the masked ROMs used on this revision of the top board.

GX330 PWB(B)2000147C GX330 PWB(B)2000147C - jumpers GX330 PWB(B)2000147B

The pictures above show the revision C board, a close up of a bunch of jumpers and the revision B board. The revision B board uses 2764 EPROMS and has no jumpers. The schematic does not cover the revision C board, unfortunately.

Konami Hyper Sports Konami Hyper Sports

The version conversion worked without a hitch. The only odd thing was that the masked top ROMS read as the Centuri version but the display is sans Centuri license. Therefore, there was no need to use the updated 27128 to replace G11 on the top PCB. I checked the images again and confirmed that they were the Centuri version of the code so it's a mystery as to why the title does not show the Centuri license. Not important for now.

27/09/2013 - Control panel repro artwork

Repro control panel overlay
Repro control panel overlay - detail

Mikonos from the ZonaArcade European forum picked up my request for help with the artwork (having done another Zaccaria CPO already) and came up with this reproduction that's now on it's way to be printed :)

28/09/2013 - PCB mounting plate

Marking the mounting plate Holes drilled PCB mounted & installed

Using the last of the three repro mounting plates from OnlineMetals I marked and drilled the mounting holes. The Hyper Sports only just fit on the plate so the next batch I'll get a half inch higher to accomodate larger board sets.

30/09/2013 - Monitor chassis repair

Hantarex MTC-900E (EU) on the bench Hantarex MTC-900E (EU) chassis

On the bench the problem with the chassis turned out to be quick to find. There was no 190V on the guns so they were wide open (hence the bright white screen). Tracking back, there was no 190V out of the main chassis to the neck board. Tracking that back yielded R131, a 10 Ohm 1W resistor, as open.

R131 removed R131 replacement taped up Picture restored

Since the resistor showed no signs of burning up due to some other fault I replaced it with one from a scrap chassis. The resistor has a ceramic insulator on each pin that needed to be secured with a little masking tape to ease getting it back in place (sandwiched between the LOPT and the heat sink). With the resistor fixed there was a reasonable picture and the new resistor didn't smoke. It wasn't even getting hot, so looking good. After a few minutes there was the tell-tale acride smell of capacitor failure so it needed a cap kit next.

01/10/2013 - Monitor chassis cap kit

Neck board cap failure Hantarex MTC-900E (EU) chassis with cap kit

At least one capacitor on the neck board looked bloated & leaking. Part way through fitting one of Bob Roberts MTC-900E cap kits I realized that his kit didn't fully fit this chassis. I've used his kits on MTC-900E/USA versions of the chassis with no issues but this was the first MTC-900E (none-USA, or European (EU) version) and it has some capacitor differences on the interface (PE07) board:

PE07 50143182
Location Original E Manual E (USA) Kit
C18 4.7uF
25V
4.7uF
16V
4.7uF
25V
C19 4.7uF
25V
4.7uF
16V
4.7uF
25V
C20 4.7uF
25V
4.7uF
16V
4.7uF
25V
C21 10uF
25V
10uF
16V
10uF
16V
C22 10uF
25V
10uF
16V
10uF
16V
C27 10uF
25V
10uF
16V
10uF
16V
C29 10uF
25V
10uF
16V
10uF
16V
C38 10uF
25V
10uF
16V
10uF
16V
C39 10uF
25V
10uF
16V
10uF
16V
C36 22uF
50V
22uF
35V
22uF
50V
C25 47uF
25V
47uF
16V
47uF
50V
C83 47uF
25V
47uF
25V
47uF
50V
C4 10uF
25V
10uF
16V
220uF
25V
C5 10uF
25V
10uF
16V
220uF
25V
C6 10uF
25V
10uF
16V
n/a
C7 100uF
25V
100uF
16V
n/a
C8 100uF
25V
100uF
16V
n/a
C9 100uF
25V
100uF
16V
n/a

So Bobs 900E kit needed 3 x 10uF@25v and 3 x 100uF@25V adding to it and leaves 2 x 220uF@25V left over. In terms of circuit differences in addition to the power supply difference, the MTC-900E/USA also has simultaneous positive and negative sync inputs whereas the MTC-900E (EU) version has a single pair of sync inputs that can be switched to positive or negative together. The RGB input signals on the MTC-900E/USA are DC coupled inputs whereas the MTC-900E (EU) has AC coupled inputs with a jumper option to select inverted video input.

05/10/2013 - Monitor reassembly & burn in

Hyper Sports (title) Hyper Sports (weight lifting)

Installed the chassis back into the cab and adjusted the picture. Picture looks pretty good (these pictures taken still with the cling wrap on the tube).

Hyper Sports burn in (title) Hyper Sports burn in (weight lifting)

No issues after 3 hours of burn in testing :)

05/10/2013 - Control panel stripping & priming

Control panel Control panel, overlay removed Control panel, glue removed

The overlay itself came off in various large peices for the most part leaving a layer of underlay & glue behind. The underlay was a bit tougher to get off, needing some rolling & rubbing to get it off taking the glue with it. Still left behind were some patches of glue that separated from the underlay. A scraper & Goof Off got rid of the remaining glue.

Ready for priming Control panel, primed, wet Control panel, primed, dry

Primed the bare metal of the control panel to even out the finish (covering the area on the left where the plating had come off and metal discoloured). The hope is that it'll also provide a better surface for the glue of the repro control panel overlay to adhere to.

06/10/2013 - Control panel repro artwork printed

Repro control panel overlay printed Repro control panel overlay printed

The repro Mikonos made has arrived back from the print shop in Europe and is now on it's way to me here in the US. Looks good to me :)

07/10/2013 - Castors

Existing feet New castors Foot rest repair

One foot was missing and the existing feet were only press fitted into the foot rest base. Replaced them all with castors as usual. The foot rest top had separated from the base and was reattached with wood glue and a couple of screws on the ends to hold the foot rest top in place.

08/10/2013 - Credit switch

Credit button assembly Coin door wiring issues Coin door wiring fixed
Credit button fitted

The coin switch wiring was partly hacked and missing come connections so I fixed that and tidied it up at the same time as assembling and fitting the credit button.

10/10/2013 - Button cleaning

Control panel button cleaning

Disassembled the control panel buttons and put the separate plastics through the top rack of the dishwasher to clean off the gunk from the insides. The springs were rusty to varying degrees but still OK to use - I'll put the best ones back on the game buttons and the poorer ones on the start buttons.

15/10/2013 - Control panel artwork scan 2

Hyper Sports control panel overlay, left Hyper Sports control panel overlay, right

Scanned in the remains of the peeled off Hyper Sports control panel overlay.
200 DPI Hyper Sports control panel overlay scan (2.3MB).

15/10/2013 - Repro control panel overlay arrives

Repro & original overlays side-by-side Repro & original overlays side-by-side Repro & original overlays side-by-side

Mikonos's repro control panel overlay arrives and looks great :)

Bubble removal Backing cut through

The repro control panel overlay had bubbled off the backing whilst coiled in the shipping tube. To allow the overlay to flatten out fully before fitting I cut down the bubble and flattened it out (using a peice of plastic wrap to keep the exposed glue clean).

17/10/2013 - Overlay alignment

Backlight alignment marking Back side button marks Hole alignment

Step one was to propagate the button cut outs onto the back of the overlay using a back light, sharpie and compass. The button alignment looks pretty good.

Overlay placement marks Overlay placement marks Overlay placement marks

Step two was to align the control panel holes with the overlay holes and "roll" that position to the natural center of the curve on the control panel. Two masking tape tabs were added to that position to extend the line as a way to give a better visual cue that it was aligned correctly. Horizontal & vertical position was marked on the backing.

18/10/2013 - Overlay application

Backing off Touchdown! Application complete

Step three was to carefully cut around the alignment marks on the backing and remove all of the backing except for the alignment areas. Next, I aligned the control panel to the overlay, pushed down and gradually applied it completely. The smooth side of a large foam floor tile acted as a flat base to press on.

Side tabs application Side tabs applied Holes cut out

Making a few cuts along the side tabs allowed the tabs to bend over properly around the curved portion. Finally cutting out the holes revealed pretty reasonable alignment - the start buttons are near perfect but the holes for the game buttons are slightly too low but not too big a deal.

19/10/2013 - Control panel reconstruction

Control panel rebuilt Control panel wiring repaired Control panel fitted

Rebuilt the control panel (putting the spacers, buttons and latches). The wiring had been "repaired" with what looks like a plumbers iron & solder so I tidied that up at the same time. Refitting, the panel looks great :)

20/10/2013 - Final test & burn in

Zaccaria/Associated Leisure Hyper Sports - front Zaccaria/Associated Leisure Hyper Sports - front, no flash Zaccaria/Associated Leisure Hyper Sports - diagonal Zaccaria/Associated Leisure Hyper Sports - diagonal

Ran the game for a few hours of burn in and did the pre-show checklist on it. Played a few games with my son, who's inherited my Hyper Sports prowess. Alas, I suck at it :)

06/10/2014 - Northwest Pinball and Arcade Show (2014)

Submitted for the first time into the show, the game made it through the show with a couple of issues. First, on Saturday the credit board died and had to be swapped out. Second, the monitor had lost red by Sunday. Aside from that, the game ran fine :)

18/07/2014 - Credit board repair

Zaccaria credit board (GETT) 1B1185 on the bench Zaccaria credit board (GETT) 1B1185 schematic Zaccaria credit board (GETT) 1B1185 fixed

The Zaccaria credit board (1B1185) was used in the later universal cabinets and replaced an all logic credit board that was used in earlier cabinets. The schematic is linked from the picture above and the full information is in the Universal type manual:-

300 DPI Universal type Z040-B0 manual scan (8.9MB).

A simple JAMMA adaptor for power, a LED and some buttons provided a test setup to test the credit board. The credit LED stayed on all the time. Poking around with a scope showed that the 8035 was running without any obvious bus problems. Further, credit pulses were exiting the 8035 on pin 37 and the 74LS00 (IC6) on pin 6. However the input to Q1 base was always low. Changing Q1 (BC548) fixed the credit board. As a precaution I also changed D18 (1N4148) since it's common for the coil diode to fail and cause the drive transistor to fail. I didn't have any BC548 to hand but a suitable substitute in almost all cases is a 2N3904. Note that the 2N3904 must be fitted flipped around 180 degrees (pin-out is 123 vs. 321).

Some additional notes on this credit board:

- The "MANUTENZIONE" (maintenance) button does not appear to be a credit button. When pressed no further coin inputs were accepted.

- The "CREDITI" button added two credits but only once. Pressing again had no effect but the coin inputs continued to work fine.

- The GETT 1 & 2 inputs are the usual pair of coin door inputs. GETT 3 is the optional center coin input.

Understanding the DIP switches is a non-trivial exercise on this board - the board not only supports various coin to credit mappings but also coin to counter mappings across three coin chutes. Thankfully there is an example table in the manual :) In my case the 2nd to last entry in that table for Hungary gives 1 coin, 1 credit, 1 count on chutes 1 & 2 (chute 3 gives 1 coin, 2 credits):

SWA SWB
12345678 12345678
onononononononOFF onOFFononOFFononon

02/08/2014 - Monitor repair

Hantarex MTC-900E in cab Chassis on the bench Hantarex MTC-900E neck board

Finding the missing red was straight forward. Using an oscilloscope to compare green and blue with the missing red from the signal input forward indicated that RGB were getting onto the neck board OK. One of the BF871's in the red circuit on the neck board looked bad. Removing it and testing it in the transistor tester revealed it to be bad. Replacing it brought back the red and fixed the chassis.

Snapped ground pin 2.8mm terminal blades Zaccaria/AL MTC-900E working

Whilst fitting the chassis back into the cabinet the rusty ground pin on the neck board that connects the neck ground to the back of the tube snapped off. A suitable replacement was a Keystone 1267K from Digikey (with some slight widening of the hole). With that fixed the chassis ran fine.

Hyper Sports with lines in the sprites

Having fixed the monitor the board now had problems with lines in the sprites :(

04/09/2014 - Board repair

Hyper Sports board on the bench Hyper Sports fixed

With this kind of fault the video probe is a useful tool to see what video data is going where. Poking around showed J13 (083) output pins 12/17/13/16 looked OK. J12 (6301) output pins 9/10/11/12 also looked OK. Thus, the fault looked like it was somewhere in the line buffer part of the circuit since the raw character data output from the graphics ROMS looked OK. Moving forward showed C17 (LS157) pin 2 was lined as was E17 pin 2,4,5 etc. In fact much of the surrounding circuit was lined. Studying the schematics a little bit revealed that the pair of line buffer RAMS are used in an alternating line configuration and thus there was a problem with one of the pairs. Comparing the two sides with video probe showed D16 pin 13 "SELA" active but D16 pin 14 "SELB" idle. B19 output "D" pins had no character data. D17 pins 3/6/10 had complete sprite data OK. Checking F19 (LS21) showed a bad output signal on pin 6. Shorting pins 5->6 filled in the missing line and a quick piggy back test fixed the sprites. Replacing F19 (LS21) fixed the game ready for the next show!




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