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My RCA 7.1 receiver keep blowing fuzes i replace them and then it blows them again when i turn it back on. everything else but the audio works. the model number is RV 3791F

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Check your sprks make sure the imp. is correct and your not overloaded with spkrs per channel, lower volm and if all checks out you will have to get the unit in for service

Posted on Feb 25, 2009

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1 Answer

My Harman/Kardon receiver avr 630 powers up an seems to be working properly . But I can't seem to get any sound to come out the speakers. But if I plug in the head phones I can hear sound in them. The...

If you didn't change any of the settings on the device you may have blown out the power amp transistors ( and usually the driver transistors as well). I'm not saying that this is the 100 percent right answer, but since you have sound with the earphones it is very likely. the headphone amp and main amp are two seperate things. there is ofter fuzes in the higher end units like you have. Look on the back of the amp. If there are no fuzes there, they may be internal. If they are on the back you can replace them, but if they immediately blow again that would indicate blown power amp, and a trip to electronics repair is in your future. good luck. Harmon Kardom makes great equipment.

Mar 17, 2015 | JVC Audio Players & Recorders

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My JVC RX-801V has a short? The 5 amp fuze burns out every time I replace it. what could be the problem?

Probably the output transistors have blown or the amplifier capacitors are dried out.

Fuses are there to protect you and the device from further damage. Repeatedly replacing a fuse without fixing the cause of why it keeps blowing in the first place isn't a wise decision.

Sep 10, 2014 | Audio Players & Recorders

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All 4 hdmi ports stopped working on Denon receiver, how do I fix it

Have you checked to make sure it didn't restart your entire system? If not you'll have to double check everything is connected correctly, turn everything on, and change the channel on the TV back to whatever Composite video or HDMI setting it was plugged into...then make sure the Denon receiver is set to Cable

Aug 22, 2014 | Denon AVR-591P 5.1 Channel A/V Receiver

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My teac ag-680 fuse keep blowing everytime i replace it and plug the reciever up

are short in the audio output transistors may have been short since a channel 2 or maybe 4, also open resistance check carefully and change them after you put a 75w bulb in series 100w or where is the fuse clearly, you have to remove the fuse when you put the focus if all is well will turn on only a small incandescent and amplifier work well you put audio speakers and there will, if everything is well put the fuse back and ready.

Jan 14, 2013 | Teac AG-680 Receiver

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Keeps blowing fuse.

Dissconnect ALL speakers from back of unit then try to turn on.
If it works you have a speaker short.
If not, you have a more serious problem.
DO NOT replace the fuse with anything else but what was specified, as it can cause a fire!

Jun 14, 2009 | Teac AG-V8600

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Sony str-de845 Powers up, relay clicks, fuses BLOW!

This condition, may be produced by defective components (Q506, Q507). you can remove those transistor, replace the fuses, power-on and wait for relays click. if the fuses not blown again, them replace both transistor.

Mar 05, 2009 | Sony STR-DE845 Receiver

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Fuses keep blowing

Check the spkr imp. and if thats good make sure your levels are not to loud if all checks out you will need some service on the unit

Jan 20, 2009 | Audio Players & Recorders

1 Answer

JVC RX-318 keeps blowing fuses

could be several things, speaker wires touching,shorted output transistors, a shorted rectifier diode,bad filter caps in the power supply,those are the most common

Jan 06, 2009 | JVC RX-318 Receiver

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I have an old Philips Audio/Video Receiver model# FR60XXBK02 I was listening to my system and it just shutoff on me and when i went to turn it back on it wouldn't. everything else hooked up to the same...

You may has a blown fuse inside the receiver. Unplug it from the wall, open it up and look around the area the A/C plug goes into the board. There should be a glass fuse. Sometimes you can tell by looking closely at the fuse if it is blown. They have a very slim filament that goes from one end to the other. If it is broken or not connected or if it looks like it is burned anywhere in the glass area, it is blown. Look at the metal ens caps for a amperage rating and get another fuse of the same value at radio shack or anyplace that sells fuses. make sure the power cord is not plugged in when you do any of this or you will get shocked.

When you first go to turn on the unit, do it with the speakers disconnected. That way, if a speaker is the cause of the fuse blowing, you will at least see that the unit turns on.

If it does turn on, turn it back off and connect the speakers and try again. If it blows a fuse, you most likely have a shorted speaker causing the amp to draw to much current and blowing the fuse.

If you replace the fuse, and it blows again after turing the unit back on with speakers connected, you have much deeper problems that will require electronic troubleshooting to determain the exact cause. But it is normally the amplifier having a shorted channel. Sometimes a random part failure can cause this for no apparent reason.

You will then need to have it serviced at a service center.

I hope this was helpful, let me know if you need more help.


Jun 30, 2008 | Audio Players & Recorders

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