Sega-Naomi

Hello all





so long time far of this forum , coming back cause so much trouble with sega boards



well first



i have 2 boards without sound , problem is from the board for sure , i tested separetly and with another rom board all is working great

could you tell me where can be the problem? i am thinking it can be the cy7C185 IC sound THE PROBLEM , but not sure



i have another board ...NOT START POSSIBLE , seems to be when i push the start button nothing happen , which one IC control this start ... if someone can help me , will be much better for me than to send theses board to KEN and wait 6 months .. perhaps its simple defects



anyway thanks so much for all and see you



johann

Sorry dude, but it is impossible to assist you with anything if you do not provide enough detail. Things like: what boards, what games, what have you done to correct issues, setup, etc.

hello



oh you completely right i forgot all details ( but i told about hotd board)



model 2 c board with game hotd board



the 2 first boards have no sound , you switch on the machin and sound initialize but no sound , ust be sound parts defect but where to look ?



the other board has no start possible , i try to start the game and play and nothing happen , to setup imput test i push the start button and nothing happen , the off /on start button stay on th off , seems to be the board is not receiving the button signal ..must be a small IC which control this on/ff start button , someone must know which one ;-0



see you and thanks

Ones without sound are Touring Car 2C CRX mainboards, the sound is disabled on those, until a MPEG board is hooked up.