they were not necessary but i had those spare heatsinc and i used to try if the temps would had gone down. by the way i'd like to try also the mkl stereo mod, do you know anyone who can sell me a preassembled smd version?
it was an old thread of mine. i bought it for cheap with the z80 error, i finally realized that the issue was the faulty ym2610.
About the smd revision i am searching for a prebuild one because if i would buy parts it will cost me more shippings than a premade one with all components already soldered. I desoldered everything and removed the 5v mod but the problem still persists. neogeo bios opening sound is good but others sounds aren't good.
