C64 vertical lines and blank spaces.

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Nboeneke
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C64 vertical lines and blank spaces.

Post by Nboeneke » Mon Aug 06, 2018 6:23 pm

I have a c64 that isnt working. It goes through a few different garbled screen but always ends up at this one. The power supply is good and getting te right voltages.
Image



MarcWalters
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Location: Lake Macquarie, NSW, Australia

Re: C64 vertical lines and blank spaces.

Post by MarcWalters » Tue Aug 07, 2018 7:30 am

Ray Carlson's C64 diagnostics pages may help.
http://personalpages.tds.net/~rcarlsen/ ... 64c-ic.txt

So, maybe try swapping the CIAs (if socketed) and seeing if the screen changes. If so, then you'll need a new CIA.

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