Zappulse 2.2se fault

mgpgebert · 17th January 2011, 09:52 AM

My Zappulse 2.2se blew up while the other channel is working fine. The symptome is a humming noise turning on and off. This happened while it was playing normally. I am trying to repair it. The centre mosfet IRFB38N20d has a different reading than the ones on each side. In has been working with no hassels for 3 years until i added a preamplifier to the set up. I did not include coupling caps in the setup. I suspect that this could be the cause.
All suggestions are welcome.

mgpgebert · 18th January 2011, 05:38 AM

Quote:

Originally Posted by mgpgebert

My Zappulse 2.2se blew up while the other channel is working fine. The symptome is a humming noise turning on and off. This happened while it was playing normally. I am trying to repair it. The centre mosfet IRFB38N20d has a different reading than the ones on each side. In has been working with no hassels for 3 years until i added a preamplifier to the set up. I did not include coupling caps in the setup. I suspect that this could be the cause.
All suggestions are welcome.

I checked and found out that the centre Irfb38n20d is short circuit. Should i replace all three of them ? Where can i get them from ? Are there substitutes ? I am in the middle of nowhere. Mauritius !!!

mgpgebert · 18th January 2011, 05:24 PM

Quote:

Originally Posted by mgpgebert

I checked and found out that the centre Irfb38n20d is short circuit. Should i replace all three of them ? Where can i get them from ? Are there substitutes ? I am in the middle of nowhere. Mauritius !!!

Can i use a irfb42n20d instead of irfb38n20d ?

17th January 2011, 09:52 AM	#1
mgpgebert diyAudio Member Join Date: Jun 2007	Zappulse 2.2se fault My Zappulse 2.2se blew up while the other channel is working fine. The symptome is a humming noise turning on and off. This happened while it was playing normally. I am trying to repair it. The centre mosfet IRFB38N20d has a different reading than the ones on each side. In has been working with no hassels for 3 years until i added a preamplifier to the set up. I did not include coupling caps in the setup. I suspect that this could be the cause. All suggestions are welcome.

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