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larserik
Joined: 19 Oct 2015 Posts: 20 Location: Australia, QLD
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Posted: Tue Oct 27, 2015 4:12 am Post subject: |
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I tried the black lead in a few spots the neg pin of c24fl, the gnd pin on c7 plug and the corner screw hole that's earthed. All gave the same readings. _________________ .. |
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jts1957
Joined: 24 Nov 2008 Posts: 2476 Location: Far, Far Away
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Posted: Tue Oct 27, 2015 10:48 am Post subject: |
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That's enough to prove that the AMP board is definitely defective. 12 volt power rail has a low resistance to ground.
Seeing as most parts on AMP board are surface mounted and require a reasonable amount of desoldering/soldering abilities ... next step in this direction would be to start isolating any audio output IC pins that connect to the 12 volt source (3 ICs - 5 pins each). ICs here
IF a GOOD replacement board can be obtained, that would be the easiest way to go about curing here for one.
I cannot vouch for the emporiums mentioned, nor did I confirm stock.
Let me know what you decide. _________________ You're over there, I'm over here. |
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