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MY JBL SUB135 IS BURNING OUT THE 2.5A 250V TYPE T FUSE

IT WILL NOT POWER ON BECAUSE THE 2.5A 250V TYPE T FUSE HAS BURNED OUT. SO I GOT NEW FUSES AND IT KEEPS BURNING OUT. WHAT CAN BE CAUSING THE FUSES TO BURN OUT?

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Something is shorted on the circuit board, could be anything - switcher power transformer, rectifier diodes (or a bridge), resistors, blown, dried, leaked or shorted electrolytic capacitors in the power supply section, possibly any other shorted components in any other section.

If you're lucky, there will be visible damage to the faulty component, otherwise you will need to measure the components to find a short.

Anyway, it could be something as simple as a shorted diode or resistor in the power supply section, but i can't say anything for sure.

Hope you can get it fixed...

Regards

3rq8 (Triarcuate)

Posted on Sep 11, 2009

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Hi, I have a Harman Kardon sub-woofer. When I change the fuse all I get is a humming sound. Does the type of the fuse make a difference? The fuse that I am suppose to use is a 2.5a 250v type T. Does the type T make the difference or could it be some other problem.

Posted on Jun 14, 2011

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