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Category: Tech / Repair

04 January 2024

Iskra 122 (12x?) series calculators – PCB expander / transit board

Written by S11
The Iskra 122 is a 1970s-80s Russian industrial & scientific calculator which uses nixie tube displays.  I’ve repaired and restored a couple, but one PCB I’ve been struggling to fix.  Since the board live in a densely packed cage...
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Tech / Repair
15 October 2023

Hardware macro click mouse with variance (Nikke)

Written by S11
There are plenty of mice with macro functionality on the market, some very precise or with full step sequences, but none that I can find allow you to add variance and if you ask the companies or on support...
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Games, Tech / Repair
29 May 2022

Toshiba SD-B100 DVD information / service / repair

Written by S11
The Toshiba SD-B100 DVD player is the model used by Seibu CATS video mahjong systems (and some Konami bemani games), it’s a broadcast quality unit actually designed by Sanko supporting serial control.  There’s an IR receiver present but as...
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Arcade, Tech / Repair
21 April 2022

Irem (ELNA) capacitor update – Madonna cabs

Written by S11
If you have an Irem Madonna cabinet you’ll find that there’s a credit board clipped to the left side of the coin box casing – M79. It’s got the same problem as the game boards, two were bad on...
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Arcade, Tech / Repair
22 January 2022

Y2 System JAMMA to Mahjong adapter reproductions

Written by S11
There’s a very rare Mahjong game for the Y2 system called Higurashi No Nako Koroni Jan, because the system is JAMMA native an adapter is needed for you to play the game on a Mahjong panel.  The game can...
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Arcade, Tech / Repair
08 December 2021

Capcom CPS Q-Sound case cap repros

Written by S11
Well thanks to Franco on the Arcade Otaku forum, we’ve put together reproductions for those often missing screw caps on CPS Q-Sound cases. These usually go missing when they are opened up to be desuicided, battery swapped, or as...
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Arcade, Tech / Repair
31 August 2020

Cassette tape foam problems – chewing & bad reads

Written by S11
I’ve been dumping a lot of cassette media lately, and I’ve seen this problem enough to consider it a common fault.  On standard computer cassette tapes there is a piece of foam which acts like a tensioner pressing the...
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Games, Tech / Repair
21 April 2020

PLCC84 7064/7096 to Dataman 48UXP adapter

Written by S11
Reading ROMs and other chips can become an expensive process. Even when you’ve obtained a reader which has all the device support you need, it will tend to come with a standard ZIF socket and if the device you...
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Arcade, Tech / Repair
19 April 2020

1972 TONY coin-op Mahjong bartop

Written by S11
I was browsing Yahoo auctions recently looking for Mahjong control panels and an IMAX MJ adapter loom, when I came across an unusual little bartop machine, the “TONY”.  The description stated that they’d plugged it in and nothing happened,...
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Arcade, Games, Tech / Repair
24 December 2019

TourVision – display board add-ons finally discovered

Written by S11
I’ve had the good fortune to locate some of the add-on score display panels which were previously only seen in a flyer image, and testing them has helped me learn more about just what the “score” is.  I saw...
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Arcade, Tech / Repair
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