Fusion Amp

Tom7227 · 29th May 2007, 07:29 PM

Hi All,

looking for any hints or info on a Fusion fjl-1211 Amp. its named Jonah Lomu. its a class D Mono block amp.

Came in with shorted IRF3205 in both powers supplies. That problem was repaired with replacement of 4 3205's and 1 bad driver transister on the SMPS board.

thought I had it fixed but it's still in shut down because the is 46 vdc on the speaker leads. All the driver MOSFETS are good and I have -38 vdc and +46 DC on the gates of the driver MOSFETS.

This has a daughter board that I dont reconize for driving the output Mosfets.

Of Course I tried Fusion and they decline me a schematic. Any help guys?

Tom

Perry Babin · 29th May 2007, 09:02 PM

Can you post a photo of the driver board?

29th May 2007, 07:29 PM	#1
Tom7227 diyAudio Member Join Date: Dec 2006 Location: Buffalo	Fusion Amp Hi All, looking for any hints or info on a Fusion fjl-1211 Amp. its named Jonah Lomu. its a class D Mono block amp. Came in with shorted IRF3205 in both powers supplies. That problem was repaired with replacement of 4 3205's and 1 bad driver transister on the SMPS board. thought I had it fixed but it's still in shut down because the is 46 vdc on the speaker leads. All the driver MOSFETS are good and I have -38 vdc and +46 DC on the gates of the driver MOSFETS. This has a daughter board that I dont reconize for driving the output Mosfets. Of Course I tried Fusion and they decline me a schematic. Any help guys? Tom

29th May 2007, 09:02 PM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Can you post a photo of the driver board? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

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