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Old 08-16-2007, 09:39 PM   #1
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Default Anyone know how to fix amps?

My 500w Memphis Class D blewup over 3yrs ago and I had it looked at. They said 6 Resistors were burnt.

Anyone willing and able to try to fix it for free or cheap?
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Old 08-16-2007, 09:43 PM   #2
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Resistors are an easy fix. But you will need to know the resistance values of the ones that got damaged. See if you can get a hold of the tech support and see if they can send you that amps schematic and parts list.
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Old 08-16-2007, 09:51 PM   #3
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I have the amp here. The resistors are pulled out of it allready and in a baggy.

I don't know if it will help but they say

SEC 808 IRFZ44A

on them
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Old 08-17-2007, 12:20 AM   #4
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Quote:
Originally Posted by 99SilverSE
I don't know if it will help but they say

SEC 808 IRFZ44A

on them
Those are actually MOSFET Transistors made by International Rectifier. The number sounds familiar. I believe they are a common part. You can get them at Digi-Key.

Many times, when the MOSFETS blow, something else went first, or they took other parts with them when they blew. How do you know this is the problem? Who removed them?
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Old 08-17-2007, 10:35 PM   #5
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Quote:
Originally Posted by hawkjet
Many times, when the MOSFETS blow, something else went first, or they took other parts with them when they blew. How do you know this is the problem? Who removed them?
The place where I took it to get looked at is an electonics repair shop. They told me that the resistors were blown and they removed them. I told them I didn't have the $$ to get it fixed at the time(and still don't) so they put them in a baggy and sent it on its way with me.

Thats all they wrote on the recipt.... 6 resistors blown
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Old 08-17-2007, 10:44 PM   #6
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Quote:
Originally Posted by 99SilverSE
Thats all they wrote on the recipt.... 6 resistors blown
That is really scary

Anyone that claims to know electronics SHOULD know that an IRFZ44A is NOT a resistor. It is a TRANsistor

I'm a MECHANICAL engineer and I know better.
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Old 08-17-2007, 10:58 PM   #7
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www.mouser.com


you will find anything you need to fix anything that was ever made on this site.. and all there peices ar cheap... they charge pennys..... i use them to fix my amps and tvs and all other electronics...
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