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Category: Tech / Repair

22 March 2016

Mutant Night bootleg sound restoration

Written by S11
Mutant Night is a pretty rare game, even with it being poorly known, weird and somewhat unpopular it’s still hard to find a real one.  Thankfully bootlegs exist and some are almost perfect clones. Unfortunately there’s a problem with...
Read More about Mutant Night bootleg sound restoration
Arcade, Tech / Repair
28 February 2016

28 pin 1mbit MASK ROMs & Life Force

Written by S11
From time to time, you’ll come across ‘problem’ parts – like the Jaleco ROMs in my last post.  Another long standing pain in the neck are 28 pin 1mbit mask devices used primarily by Konami and Namco. Now with...
Read More about 28 pin 1mbit MASK ROMs & Life Force
Arcade, Tech / Repair
15 February 2016

Reading HN62312 and HN62304 chips

Written by S11
I recently ended up buying a Jaleco Lord Of King (Astyanax) PCB, which also came with a P-47 ROM board – or maybe it was the other way around.  When I looked at it and my existing P-47, and...
Read More about Reading HN62312 and HN62304 chips
Arcade, Tech / Repair
02 December 2015

Code archeology – Sky Smasher leads to Cabal II

Written by S11
I found this out a while ago, but haven’t managed to post about it yet other than mentioning it on IRC and maybe a mailing list. When I discovered Sky Smasher (which is a great shooter you should try...
Read More about Code archeology – Sky Smasher leads to Cabal II
Arcade, Tech / Repair
05 November 2015

Repair – Atomic Robo-Kid encrypted CPU replacement

Written by S11
I bought an Atomic Robo-Kid PCB a long time ago, in fact my e-mail doesn’t even go back far enough to find out when it was.  Just one problem, it was always unreliable and over the years as I’ve...
Read More about Repair – Atomic Robo-Kid encrypted CPU replacement
Arcade, Tech / Repair
08 August 2015

Repair – Battle Garegga boot faults

Written by S11
I’ve had a Japanese Battle Garegga for a while, but one thing which had always bothered me is that it was fussy about which cabs it would work on and which it wouldn’t.  I found that quickly toggling the...
Read More about Repair – Battle Garegga boot faults
Arcade, Tech / Repair
28 April 2015

Repair – working around a faulty Gundhara

Written by S11
I picked a Gundhara PCB recently on the forum, it was advertised as a bootleg but it strongly resembled the strange Daioh I got recently and obviously came from the same factory.  I think the most likely explanation for...
Read More about Repair – working around a faulty Gundhara
Arcade, Tech / Repair
29 March 2015

Metal Slug 2 – reducing the slowdown

Written by S11
UPDATE 15/05 – DO NOT BUY FROM PEOPLE PRODUCING MODIFIED CARTS, the readme file specifically bans making money from this patch.  Since this work is given away entirely for free, a modified cart is worth the same as an...
Read More about Metal Slug 2 – reducing the slowdown
Arcade, Games, Tech / Repair
01 February 2015

Repair – Namco NB-1 leaking capacitors

Written by S11
A never-ending plague… I picked up a NebulasRay earlier this week, hard to find these days and I’d heard someone mention reliability issues.  It arrived, it worked, and upon close inspection I can see one reason these would fail. ...
Read More about Repair – Namco NB-1 leaking capacitors
Arcade, Tech / Repair
12 August 2014

More Irem capacitor woes

Written by S11
I’ve just found M99 suffer the same problem as M92 and M107. At this point, ANY Irem board newer than M84 series (that’s up to R-Type II) with brown coloured ELNA caps should be considered suspect.  Change the caps,...
Read More about More Irem capacitor woes
Arcade, Tech / Repair
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