Thread: Zx81
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Old 23rd Mar 2020, 10:55 am   #143
John Earland
Join Date: May 2013
Location: Middlesbrough, North Yorkshire, UK.
Posts: 442
Default Re: Zx81

That's a good idea. I will try that.

I have been running the '81 all morning and each time the video goes bad I spray the ULA and each time the video is restored so it is a bad ULA. I don't think fitting the CCB PCB will be useful?

If this is the case, and the ULA is faulty, should I still revert to its original modulator setting and remove my mod as you suggested above?
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