Zapco Z400c4-SL no power supply - Page 3 - diyAudio
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Old 11th March 2010, 08:51 AM   #21
fongman is offline fongman  United States
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I will try it later. Thank you Perry for your help.
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Old 11th March 2010, 10:11 PM   #22
fongman is offline fongman  United States
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I try calling zapco today and they don't sale parts. They charge $65 to look at it. I'm going to try to hook up the transformer tonight.
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Old 12th March 2010, 04:26 AM   #23
fongman is offline fongman  United States
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Click the image to open in full size.

Ok the picture on the left is scott-leanne's zapco amp. Mine is the one on the right. I can't figure what wires goes where? Don't the transformer reduce power? Will this put to much power to the board?
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Old 12th March 2010, 04:29 AM   #24
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Did you read the text in post #13?
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Old 12th March 2010, 05:04 AM   #25
fongman is offline fongman  United States
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How do i know which are the:

outer primary windings
center secondary wires
center primary windings
outer secondary windings

on the Zapco amp. Can you point out wires on the pictures?
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Old 12th March 2010, 05:15 AM   #26
fongman is offline fongman  United States
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On the zapco amp P1,2,5,6,7,8 are ground. And P3,4 are 12V. Where should the winding of the transformer go? Sorry i'm just lost. I can hook them up but i don't want to burn anything up.
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Old 12th March 2010, 05:50 AM   #27
fongman is offline fongman  United States
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Click the image to open in full size.

I'm not sure if this is were they so go?
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Old 12th March 2010, 07:46 AM   #28
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You have too many wires going to ground. Re-check with your ohm meter to see which ones are directly (~0 ohms) to the ground terminal of the amp.
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Old 12th March 2010, 08:08 AM   #29
fongman is offline fongman  United States
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P6 and P7 are about 10ohm. I should put P3 to P6, and P4 to P7. And P1 to P5, an P2 to P8. what do you think?
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Old 12th March 2010, 10:09 AM   #30
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Are the power supply FETs shorted?
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