Spyhunter -5v test point? I have no foreground graphics

CharlesDeMar

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Spyhunter -5v test point? I have no foreground graphics

Hi guys,

I am trying to fix a spyhunter. Initially the game would not boot. I disconnected the reset circuit and got the game to boot, but it's missing all the foreground graphics. I see the road and text, but all the cars and spyhunter logo are missing.

I read somewhere that I needed to check the -5v line on the mcr power board. The manual refers to test points A and G. However, there is no test point G in the diagram. Does anyone know how to test the -5v in a spyhunter? Do you know if it's possible that this could cause this issue?

I am going to order rebuild kits for the power supply as well as new ribbon cables for the pcb. Any other suggestions as to what I should test?

Thanks in advance!
 
CPU doesn't use -5.

You likely have another issues. Not sure what it would be though.

Ribbon cables is a good idea.
 
Thanks for the response. I really appreciate it. I can at least rule out the -5v.

I'm thinking either the ribbon cables on the board stack, maybe a cold solder joint, or a corroded/unseated/bad chip. I'll update once the ribbon cables arrive and I investigate the pcb.

If anyone has any other suggestions, I'm all ears.

Thanks!
 
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