Question about Harman Kardon AVR 55 Receiver

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Harmon Kardon AVR-55 fuse schematics

Pulled fuses from receiver to replace because amp was turning its self off. Didn't know they were different amperages and now don't know which go where.

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F101 is 8 amp / 250 volt slow blow
F103 is 315 mA / 250 volt slow blow

Posted on Jan 12, 2009

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Could be an open internal fuse or power supply failure.

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Possible blown fuse inside unit, unplug and remove the top cover
fuse should be near the power board and transformer. replace with exact fuse, "Never remove covers with the unit plugged in" Always wait 4 or 5 minutes after unplugging to remove the cover.Replace cover before plugging unit back in.

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I have the Harman Kardon AVR 254. Just recently it stopped responding. It will cut on and the volume dial will respond but none of the front panel buttons will. Any suggestions on a fix?


There should be two fuses on the secondary board of the main power transformer. They don't look like regular fuses - they are small round can fuses. These are probably open. HK under-valued these fuses originally, and they need to be replaced with 3.15 amp.

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Harmon/Kardon AVR 146 wont stay on when hit power


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Need power fuse type for a Harmon/Kardon AVR 10


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Sep 09, 2012 | Harman Kardon AVR 10 Receiver

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Hi, I have a Harmon Kardon Model No. AVR 325 that keeps clipping. When I push the power button the display turns off like a second after I push power. Seems like its a easy fix. Nothing if fried visually...


it sounds like Amp burned, but not all burn parts you can see, you have to measure them by DMM. I guess at least one AMP transistor shorted. you can check SPK terminals by DMM DC, it can be easy to find different with other one

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I have an Harmon Kardon AVR 85 and the power will not come on. The batteries are good in the remote, I have unplugged and plugged the unit back in, but the red light stays on and will not power up. How...


First of all, if you have just been powering up with the remote, try pushing the actual button on the unit. From owning a HK receiver, I found out that if the power switch is out, it will not turn on from the remote. Duh moment when I discovered this.
It also might be an internal fuse or circuit breaker that is shorted or tripped. If there is not an outside breaker or fuse, send this to a repair person. Sometimes there are capacitors in the power amp circuit that can hold a lot of voltage for a good length of time. You could get shocked. So, you might want to let the repairman handle this. Otherwise check for an outside breaker or fuse, and replace if needed.
You can also check Harmon Kardon's site for customer support.

Feb 19, 2011 | Harman Kardon AVR 85

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Hooking up an amp


plug eash units sound in red whites from dvd tv main out the set speaker wires in place front ch a ok turn it on make sure ch a speakers on only select corect video input dvd ect turn it up

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