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Untested 5200 update


Celotine

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Ok got my PSU and games for my 5200. It doesn't work. Solid green screen no matter what game I use. Read it might be a RAM issue so I found some replacements inexpensively so I'll go from there. Anything else it might be?

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That's good. I'd check to see that each IC is getting power before moving on to doing anything with a RAM swap. Sounds like the GTIA is getting powered but the CPU might not be getting power or might not be working.

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Just now, bent_pin said:

That's good. I'd check to see that each IC is getting power before moving on to doing anything with a RAM swap. Sounds like the GTIA is getting powered but the CPU might not be getting power or might not be working.

Cool which one is that, I'll put the meter on it after dinner

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9 minutes ago, bent_pin said:

That's good. I'd check to see that each IC is getting power before moving on to doing anything with a RAM swap. Sounds like the GTIA is getting powered but the CPU might not be getting power or might not be working.

@Celotine Check that you have proper input and output voltage from each of the twin 7805s. As they basically each power half of the system logic. If those are good, then I would start with the CPU which is the large IC to the upper left. 

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8 minutes ago, -^CrossBow^- said:

@Celotine Check that you have proper input and output voltage from each of the twin 7805s. As they basically each power half of the system logic. If those are good, then I would start with the CPU which is the large IC to the upper left. 

Thanks so much. I'm on it!

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