What is this problem- see photo

THEDJ

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I am trying to repair a system1 road blasters.

graphics are all messed up (SEE PHOTO)

sound works.

i have pull and reseated all socketed chips.

rebuild power supply. (not original, had to make one. transformer/switching)

at a dead end. Help.

Note, I did not know where to hook up the -sync and the + sync(not the monitor sync) to the power supply. (the original power supply had connections for that). not sure where they go.

thanks
chris
 

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I am trying to repair a system1 road blasters.

graphics are all messed up (SEE PHOTO)

sound works.

i have pull and reseated all socketed chips.

rebuild power supply. (not original, had to make one. transformer/switching)

at a dead end. Help.

Note, I did not know where to hook up the -sync and the + sync(not the monitor sync) to the power supply. (the original power supply had connections for that). not sure where they go.

thanks
chris

Need to insert coins?
 
RB

Hey Chris. Glad you have got this far with it. I have never heard the word slags before either. Very curious what that means.
 
I had a somewhat similar picture when one of the eproms was not installed (can't remember which one...)...
 
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