Rockford Fosgate/Mosfet

steven123654 · 28th August 2009, 08:21 PM

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.

Perry Babin · 28th August 2009, 10:19 PM

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

I Am An Idiot · 28th August 2009, 10:59 PM

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.

midnightg35x · 29th August 2009, 05:57 AM

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.

steven123654 · 2nd September 2009, 02:11 AM

Quote:

Originally Posted by I Am An Idiot

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.

steven123654 · 2nd September 2009, 02:13 AM

Thank you all so much

28th August 2009, 08:21 PM	#1
steven123654 diyAudio Member Join Date: Mar 2009	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.

28th August 2009, 10:19 PM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	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 __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

28th August 2009, 10:59 PM	#3
I Am An Idiot diyAudio Member Join Date: Mar 2007	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. __________________ If it ain't broke Don't fix it

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
rockford fosgate punch z	stevena2006	Car Audio	2	23rd December 2009 04:20 PM
Rockford Fosgate 325.1	phreaktor	Swap Meet	1	28th February 2008 11:54 PM
New Rockford Fosgate amp. $50.00	NerdMike	Swap Meet	0	4th March 2005 11:57 PM


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

29th August 2009, 05:57 AM	#4
midnightg35x diyAudio Member Join Date: Jan 2009 Location: Iowa	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.

2nd September 2009, 02:13 AM	#6
steven123654 diyAudio Member Join Date: Mar 2009	Thank you all so much

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read