Question about JBL p7520 POWER AMPLIFIER 2 CHANNEL Car Audio Amplifier

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I have a JBL car amplifier Model 86280-AC040. I don't know if this is the real model number (installed in Toyota Avalon 2000). ''Harman OEM'' appears on the PCB. I am looking for the schematic. Can you help me? Thanks.

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Posted on Jan 02, 2017

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SOURCE: I need a schematic for my HK amplifier

Hi all,

Just thought I’d share my experience, I have a 04 cooper with the HK. The radio was still working but the HK settings were lost in the head unit and there was no sound coming out of the speakers so I concluded it was the amp.

I wrote to the Mini UK Customer Services manager, Simon Anderson (simon.anderson@bmw.co.uk), citing I believed the problem was inherent and that it should be replaced for free. He denied this and asked for me to take it to my dealer and once diagnosed ask for a goodwill gesture towards fixing it. I did, they diagnosed that it was the Amp and said that would be 700 quid to fix (160 diagnosis fee, 410 for the amp and 90 for fitting plus VAT). I then asked for goodwill and, after fighting to not to have to pay the diagnosis fee because I approached Simon knowing what the problem was, got it for 160 inc vat which was 20% of the price of the amp plus half an hour fitting. I also had to contact their customer service department a bunch because getting through to Simon direct was challenging. The BMW head office number is 01344 426565, ask for him and they will put you through. FYI the goodwill was, in part I was told, based on the fact that I’d had a ‘real’ bmw dealer service my car.

It still annoys me that I had to pay anything as there clearly is a problem but c’est la vie. If anyone has managed to get this for free from BMW I’d be interested to know.

Good luck

Regards

Ben

Posted on Nov 06, 2009

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technical114
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SOURCE: I have no audio output from the jbl 86280 ow390

As you said "the left rear speaker blew and became very hot". This is a symptom for problems at the amplifier stage (burn out internal amp parts, not protected by any fuse and giving DC output power at the speaker may cause this exact kind of problems at the speaker). I suggest a full check for the JBL amplifier at a service center. I don't suggest to use this amp at another speaker. This may destroy this speaker also. Depending on the exact kind of problem at the amplifier you may have to check the wiring between the amp and the burned speaker also, before you install the amp back to the original location.

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Posted on May 01, 2011

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-kanny
kanny-sounds.blogspot.com

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