repair

Back again with another AES in a bad way... this one was stuck in the click of death (fast clicking/popping), then I started messing with it. :D I immediately found a bunch of corrosion around the LSPC2; I cleaned most of it and ran a few bodge wires, and I was able to buzz everything out...

Hello, I'm repairing this golden axe bootleg. Initially characters sprites were missing so after reflashilng almost all roms(no stickers) I replaced the broken74hc138, the ls298 which was broken and the resistor missing and now the characters are missing but removing the ls189 they reappear...

Hello everyone! I recently got a Bootleg mk1 PCB that suffers from graphical glitches When i boot it up the mk splash screen and character portraits show fine, but the rest appears as a corrupted mess. After checking the board i found that this plus153bn gets quite hot to the touch My...

Hey everyone! Relatively new to soldering and fixing pcbs, however attempted to troubleshoot this windjammers since It was inconsistently giving me distorted audio. Someone had clearly worked on this game previously to me and the pcb itself was a disaster of old flux and some dodgy soldering. I...

So my New Astro City cab has some cracks between the control panel and the main body, as if someone sat on the control panel or used it to reach the top shelf, or something. It happened before I bought it. Anyway, I wanted to fix it. The metal brackets between the panel base and the monitor...

Hi there! Can anyone point me to a replacement pot for VR1? I've seen some posts saying that it shouldn't be messed with. Sadly my board came with a busted pot. The game works, but I don't know if it will cause damage in the long term.

Hi all, I need your help. I got an AES ver 3-6 with damaged traces. Looking for some schematics in order to repair. Thank you

Somehow mangled the USB port on my Naomi 2, any suggestions? Anyone have a digikey link for the part. I would love to repair rather than replace the filter board. Pics https://imgur.com/a/Zh7rONv

Hi. Err, this is a big Work In Progress. Nowhere near finished. I'm gonna abuse this post as a blog or something, so expect updates. OK before you TL;DR, can you please point me in the direction of a program that can convert an audio file with FM encoded data into a binary? Otherwise I will...

This post describes using various tools from https://github.com/buffis/cv1k_research to fix CV1000 pcbs with bad NAND flash for U2. - Background A while ago there was a Espgaluda 2 sold on YAJ that had sprite issues when bombing. https://page.auctions.yahoo.co.jp/jp/auction/x1005199728 I was...

(Moved here from the TTX2 forum, since I probably should have posted here instead.) Having a helluva time with the TTX2. Full disclosure: I did not expect this thing to work at all, since it was an as-is YAJ purchase. I was purchasing it for the medal game, which didn't seem to be available...

Hey guys n gals, recently installed my multi on a working SFAlpha B board. Tested and was working fine, went to install multikart and getting the jailbars. I followed the troubleshooting instructions; ran both troubleshooting files, cleaned all pins and headers, removed and reseated everything...

I picked up a cheap untested MVS 4-slot and have started to fix it up. It was one of the dirtier boards that I've dealt with and was full of graphical glitches caused by the material build up in the cart slots. This is an ongoing project, so I’ll post photos as I go. Before After First...

I'm getting corrupt graphics from a Raiden II PCB. The sprites are bad and there is a blue grid overlay. Any suggestions on how I can fix this? So far I've: Cleaned and reseated the socketed chips Cleaned the PCB Recapped it Checked for bad traces Test Mode screen is completely corrupt: