Dexx1981

https://wiki.neogeodev.org/index.php?title=NEO-D0

you can check the horrible sound glitch on my twitter account :giggle: neogeo glitch...

i meant information about how to tackle that issue :giggle: and YEP, that chip was the problem.

PROBLEM FOUND and FIXED!! the issue was this chip. i couldn't find much info on the web so i tried this, glad i had a spare chip in...

ok! update about the sound issue, it's still there o_O i soldered sockets on the board so there has to be a bad trace under one of the...

tested the 6116 static ram, test failed... but after a firmware update on the chiptester V2 it passes the test :unsure: oh well, the...

oh crap, corrosion detected in the RTC area.... but that isn't the issue of this thread, cleaned it anyway :giggle:

yeah, that's my fault.. i'm gonna BEEP some more on the traces :LOL:

No, it doesn't. It looks good, but you need to do the work of beeping them all out if you haven't already. Did you repair those ones in...

This might be a bit of a guess but I've had a trace or two break from just handling the motherboard, maybe it was me or maybe it was...

does this answer your question 😁 bonus photo included, it was filthy... if there is something with the C1 or D0 chips.. i do have spares...

desoldered the Z80 and tested it with the chiptester V2, PASSED even the BURN-IN test is ok :unsure: removed the ROM chip next to it...

the battery was already gone when i got it.. i need to check for bad traces now.

hmm, it could be the Z80 then :unsure:

grabbed my diagbios and cart.. now i'm getting somewhere :sneaky: