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Post by talon2000 on Jun 22, 2012 11:47:51 GMT -5
lh6.googleusercontent.com/-pJmwvoJRQB8/T-HjTdxng3I/AAAAAAAAFtU/vEBiEDQagjA/s640/IMG022.jpgSorry image would not imbed. Have a Tempest, running on my Pat9000 so the monitor is good. Had severe picture pulsing, found the -15v reg was bad, putting out -23v instead. Replaced reg, and cap. Now I have this in test mode, it appears to happen mainly on all the text, but not so much on diamond test pattern. Have checked, and or replaced all Tl082's, Mc1495's, LF13201's no change. Anyone have ideas?
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Post by VectorX on Jun 22, 2012 11:58:48 GMT -5
If there's no replies in a few days (vectrexmad is the local tech guy), I can send it around to my e-mailing game group I'm with. Someone will probably know there, especially since Tempests are pretty problematic in general.
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Post by talon2000 on Jun 22, 2012 13:41:33 GMT -5
Well I've only repaired close to 150 of these boards, so I haven't seen it all yet. This one is a new one on me. So I may have to set it aside, and grab one of the other 80 I have waiting.
Normally this would be something in the monitor section. I'm going to go back and check all the power supply signals again and see if there is something I missed.
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