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Old 29th May 2007, 06:29 PM   #1
Tom7227 is offline Tom7227  United States
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Unhappy 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?

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Old 29th May 2007, 08:02 PM   #2
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Can you post a photo of the driver board?
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