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roginator
Joined: 29 Sep 2007
Posts: 13
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 Posted: Fri Jul 17, 2009 12:03 am Post subject: MKS 80 VCA problem or what |
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on all voices level is so low and after few minutes it rise up up to distortion... and it burned one VCA and Opamp in second VCA on lower board....
i have few spare vca and opams but dont want to kill em no more
That happend on non recaped version..I thought problem is on recaping....anyway I wanted to recape whole machine....BUT after recaping I have samme issue..but now i swich of MKS 80 on time for VCA dont die when it start to be too loud with distortion
any idea
..... |
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roginator
Joined: 29 Sep 2007
Posts: 13
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| Posted: Fri Jul 17, 2009 12:40 am Post subject: |
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problem solved.. cold solder ...but still ....it gets regular volume after 2 minutes
is that normal ..or |
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roginator
Joined: 29 Sep 2007
Posts: 13
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| Posted: Fri Jul 17, 2009 3:13 pm Post subject: |
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ok i took some time and checked voice boards
Problem is not there
ON TP5 * test point 5
i have good signal even when on switching its 30db lower on output on TP5 everything is ok!!!..tested it with Scope!!!
so output PBC is problem |
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roginator
Joined: 29 Sep 2007
Posts: 13
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| Posted: Mon Jul 20, 2009 4:59 pm Post subject: |
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problem was Dead capacitor on Analog out PCB... solved
BABY WORKS LIKE NEW!!! |
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