Recent content by man1aco

Memory test fail poligon memory and poligon fifo

Now I need to find some memories to repair 2 video PCBs And as I live in Brazil, I can't find it here. I have to find a very cheap place to buy because the import taxes of our communist government are 92% to import anything.

Fixed the 3 CPU Boards, two just a good cleaning with alcohol, one had to make bridges.

Strange glitch in Virtua Fighter 3 I have 3 complete sets all with the same fault. 2 sets have serious problems on the video PCB but that is irrelevant. The game accepts credit but does not enter the service menu, not even through the PCB buttons. The number of rounds is infinite, the fighters'...

All set corretc to LOW 15khz , I have some spare boards for parts , I can replace this sync PCB

I don't even know how to describe this defect to search on google NANAO MS8-26SU

the game does not check if these eproms are good, it would be necessary to read it on a burner and compare it with the mame files. If they all pass as good in any romident, the only thing left to do is measure with an oscilloscope whether any data or address line is inactive. The PCB seems to...

In my experience with this PCB, and I have a lot because I brought back to life 6 System X this year. You have bad contacts with the graphical roms or some of them need to be changed. Poor contact makes these gaps when drawing on the screen. All it takes is a few dirty legs in the mask roms...

It's simple, any game with analog controls will work. Very useful for games that have jamma and an analog connector.

Tu The CRT was in a sega Titan cab, this is a generic Wood cab from Brazil.

Regarding the polarity of the pedals, the game adapts itself when you calibrate it, there is no need to change the wires.

I'm going to use the Indy 500 steering wheel as soon as I get the missing controller pcb, I already have the I/O I just need to get the motor driver PCB for the steering wheel. currently using the original Rad Rally steering wheel and pedals, and a gear lever from an Indy 500, it's a very good...

It's gotten better but it's still not good. the sound works until you press start. I have no idea who it is, D/RAM Bank 0, I have memories of a scrap PCB to replace if I find out who it is.

The NANAO I was using here, I took it out to evaluate the vertical capacitors. I removed and tested the c432 and c433, c432 tantalum was fine, c433 was bad. replaced the c433 10uf 25v capacitor, shit on the fan, the image was horrible but I forgot to take a photo because I was in a hurry to...

Time to send it in for repair.This PCB is very complex and delicate, I have a feeling it will get worse if I replace memories at random. I got the board schematic. But if anyone has more information about the error codes, I would appreciate it if you shared it.