Zapco Z400c4-SL no power supply - Page 4 - diyAudio
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Old 13th March 2010, 04:42 AM   #31
fongman is offline fongman  United States
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They are ok
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Old 13th March 2010, 04:51 AM   #32
fongman is offline fongman  United States
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I've found out that p1 and p2 are ground. P3 and p4 are power. P5 and p8 are also ground. P6 and p7 are power. I will install the transformer and see what happened?
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Old 13th March 2010, 04:54 AM   #33
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There is a problem if all of the resistances to ground are accurate. I don't know any way that the wires that go to the FETs could read 10 ohms or less to ground and the FETs not be defective. Are you sure it was 10 ohms and not 10k or 10M ohms?
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Old 13th March 2010, 04:55 AM   #34
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What do you mean 'power'? Connected directly (0 ohms) to the B+ terminal of the amp?
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Old 13th March 2010, 05:15 AM   #35
fongman is offline fongman  United States
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I was going to put p1 to p5, p2 to p8, p3 to p6, p4 to p7. Using the transformer.
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Old 13th March 2010, 05:29 AM   #36
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With the information that you've provided, I can't help any more than I have.
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Old 15th March 2010, 06:00 PM   #37
fongman is offline fongman  United States
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I understand. I finally put the transformer in and got the amp to power up. The protection light is on and so is the cliping light. Zacpo don't really want to sell parts so if i want to fix it i will have to send it in. They are about 2 hours from me. I might evern put it up on ebay because i think some body can use it for parts? Thanks for your help.
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