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View: https://www.youtube.com/watch?v=CheYl23PnNw I bought a SYSTEM32 board that had a sound problem. Repetitive noise is played continuously and no sound effects or BGM are played. 5V and 12V are normal, and I double-checked that the IC35 and IC31 EPROMs were burned correctly. I have...

hello. I have a Virtua Striker 2 bootleg security board and a Dynamite Deka bootleg security board. These boards used FPGA chips. So, I am wondering if it is possible to extract the data inside this FPGA chip and modify it so that it can be used to decrypt other games by inserting the 'key' of...

hello. I recently bought the Silent Scope 1 PCB. When I turn it on Nothing is displayed on the screen, 'RA-PR-CH' is displayed on the 7-segment LED, and after the memory test, 'Er40' is displayed repeatedly and does not boot. If anyone knows what causes ER40, please help.

hi. I have a problem with my Model 3 board, so I need help. When I turn it on, I see strange patterns all over the screen and the text is messed up. And I can't proceed any further on that screen in the attached screenshot. The graphics board is fine. If you swap it with another CPU board, the...

Hello. I've been collecting SEGA model series boards for a long time. The model board is a board made nearly 30 years ago, so I've been thinking about how to preserve it for a long time. I've found that a kind of "rechargeable battery" that exists to hold data in NVRAM's volatile memory, called...