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Rockford Fosgate/Mosfet
Rockford Fosgate/Mosfet
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Old 28th August 2009, 08:21 PM   #1
steven123654 is offline steven123654  Canada
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Default Rockford Fosgate/Mosfet

Hey, I own a rockford 350s amp, and I burnt my output mosfet. I want to replaced them but I dont know how to remove them from the heat sink.The problem is that the amp uses what Rockford call Mesha witch is the back of the mosfet (big metal connection for heat transfer) connected to a PC board then to the heat sink.Can anyone tell me if it is glued or soldered to that board.
Much thanks, steven123654.
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Old 28th August 2009, 10:19 PM   #2
Perry Babin is offline Perry Babin  United States
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They're soldered on. Read the following post. It was for the larger FETs but the procedure is essentially the same for the smaller FETs.

http://www.diyaudio.com/forums/showt...81#post1901581
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Old 28th August 2009, 10:59 PM   #3
I Am An Idiot is offline I Am An Idiot  United States
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Are you sure that your outputs are defective? According to what I am reading from your other post, you may have a shorted speaker or a grounded speaker wire.
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Old 29th August 2009, 05:57 AM   #4
midnightg35x is offline midnightg35x  United States
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If you have a hot plate, they come off super easy. Set the hotplate between 100-150C, stick the MEHSA board on it, then use a wide tip soldering iron on the tabs of the FET's you want to remove. After a couple seconds, the FET's should just slide off the MEHSA board.
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Old 2nd September 2009, 02:11 AM   #5
steven123654 is offline steven123654  Canada
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Quote:
Originally Posted by I Am An Idiot View Post
Are you sure that your outputs are defective? According to what I am reading from your other post, you may have a shorted speaker or a grounded speaker wire.
No I hev tryed with diffrent subwoofer 4 ohm and 8 ohm in car car and in my workshop.
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Old 2nd September 2009, 02:13 AM   #6
steven123654 is offline steven123654  Canada
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Thank you all so much
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