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Old 28th October 2010, 02:14 AM   #1
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Default fosgate t40001bd bad p/s

the other day i blew my amp. i opened it up and the power supply is burnt. i also noticed that this amp has previously been repaired (output stage). it's so big i hate to mess anything up so i called fosgate and they want $550 just to fix what is wrong with it and a 90 day warranty. thats a lot for me. so i called a guy i heard about online and he told me thats it's a gamble because certain parts used in these amps he can't get a hold of, but if he coould repair it it would be 1/2 as much as fosgate. do yall think i should attempt to repair it or what?
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Old 28th October 2010, 02:25 AM   #2
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why not there is a first time for everything
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Old 28th October 2010, 02:31 AM   #3
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Are any of the output transistors shorted?

If so, what are they?
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Old 28th October 2010, 02:55 AM   #4
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irfp260n. it appears half of em have been replaced. the original half has a direct short.
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Old 28th October 2010, 03:09 AM   #5
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i have 2 kinetic 1400's and 1 kinetic 2400, 200a iraggi alt, 0ga wire. only had it hooked up for a couple weeks. i suspect low voltage/current because i had my car off and played it for about 45 sec on music then smoke. 1 ohm load box rise to 2.3 ohm
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Old 28th October 2010, 03:11 AM   #6
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The irfp260n's are avaible
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Old 28th October 2010, 03:12 AM   #7
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The outputs are available so you can probably repair it.

Before you start, try to get the schematic diagram for the amp.

Which FETs are they using in the power supply?
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Old 28th October 2010, 03:16 AM   #8
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75344g
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Old 28th October 2010, 03:21 AM   #9
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Ok.
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Old 28th October 2010, 03:29 AM   #10
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i looked around and people are saying that if i call fosgate that they will probably send schematic to me. so i'll call em tomorrow
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