Zapco Z400c4-SL no power supply - Page 4

fongman · 13th March 2010, 04:42 AM

They are ok

fongman · 13th March 2010, 04:51 AM

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?

Perry Babin · 13th March 2010, 04:54 AM

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?

Perry Babin · 13th March 2010, 04:55 AM

What do you mean 'power'? Connected directly (0 ohms) to the B+ terminal of the amp?

fongman · 13th March 2010, 05:15 AM

I was going to put p1 to p5, p2 to p8, p3 to p6, p4 to p7. Using the transformer.

Perry Babin · 13th March 2010, 05:29 AM

With the information that you've provided, I can't help any more than I have.

fongman · 15th March 2010, 06:00 PM

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.

13th March 2010, 04:54 AM	#33
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	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? __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links

13th March 2010, 04:55 AM	#34
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	What do you mean 'power'? Connected directly (0 ohms) to the B+ terminal of the amp? __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links

13th March 2010, 05:29 AM	#36
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	With the information that you've provided, I can't help any more than I have. __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links

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13th March 2010, 04:42 AM	#31
fongman diyAudio Member Join Date: Jan 2009	They are ok

13th March 2010, 04:51 AM	#32
fongman diyAudio Member Join Date: Jan 2009	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?

13th March 2010, 05:15 AM	#35
fongman diyAudio Member Join Date: Jan 2009	I was going to put p1 to p5, p2 to p8, p3 to p6, p4 to p7. Using the transformer.

15th March 2010, 06:00 PM	#37
fongman diyAudio Member Join Date: Jan 2009	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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