Question about Harman Kardon AVR 130 Receiver

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The protect light goes on and the unit shuts down when I increase the volume?

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  • 73 Answers

This sounds like a problem in at least one channel of the power amplifier. Only an experienced audio technician should attempt to repair this problem. It is not an obvious or easy fault for a novice to diagnose or repair. ie, you have a situation in which the unit seems to function at low power levels, but the problem become apparent at higher power levels.

Posted on Oct 07, 2010

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1 Answer

When raising volume deck cuts-off


Sounds like an overheating issue. Most car receivers have heat sinks at the rear to dissipate heat, but if there is little or no rear clearance for the unit the heat may build up and the unit goes into a self protection mode and shuts down.

Sep 01, 2015 | Car Audio & Video

1 Answer

Hii I have sony shake 6D system and whenever I turn the volume up it reaches upto 40 and shows the error of 'protect E01' while the maximum volume is 50. Please help


Most likely, your unit is shutting down due to overheating. You cannot run an amp at that kind of volume very long. It is shutting down to protect itself. Try running the amp at 1/3 your normal level. Most likely, it will not shut down.

Aug 05, 2015 | Sony Audio Players & Recorders

1 Answer

Hi, i have a Denon PMA 735 R amplifier which shuts down when volume increases suddenly.


Sounds like you have output transistor problems. Does it have a red protection light that comes on when it shuts down? If it does it will need serviced.

Dec 06, 2011 | Audio Players & Recorders

1 Answer

My fr 996 shuts down when the volume is increased can you suggest anything which be causing this?


There are a number of potential causes for this. Among them could be defective coupling capacitors between the pre-amp stage and the final stage. This would allow DC voltage to pas through to the final stage where the protection circuits would detect it and shut the unit down. Without taking internal measurements, it is impossible to determine the problem with this unit. I would suggest that you get a detailed repair estimate, report the results here and we should be able to walk you through the actual repair.

Dan

Nov 06, 2009 | Philips FR996 Receiver

1 Answer

I got a pyle 1800w amp and a 1500w kenwood subs but as i increase the volume in the headunit it goes on protect mode why the other problem i got is as increase the volume in the headunit the bass of the...


The protection modes in these units ****. Most new units have them. What I do is turn down settings on deck and turn up amp as much as possible. Then the protection won't turn on because you won't have to turn it up as high.

Sep 30, 2009 | Pyle PLA1200 Car Audio Amplifier

1 Answer

Onkyo ts595 goes into protect mode with volume increase


HI check your speaker cables are not touching, also make sure "b" speakers are not on and that all your speakers are 4ohm or higher as this will cause the amp to shut down if they are to low an impedeance,The amp is protecting itself when it shuts down.

hope this helps.
CABLE GUY.

Aug 03, 2008 | Onkyo TX-DS575 Receiver

2 Answers

Bass sounds flat when volume is increased


probably your power is too short, increase your gauge wire, and your ground wire of the amplifier has to be shortly as possible, and the positive has to be enough to support peak power, you can also put a big capacitor on the positive wire to give some more power while the bass peak.

Apr 26, 2008 | Earthquake Sound PH-D2 Car Audio Amplifier

2 Answers

PROTECTION MODE


The unit may be experiencing an overload caused by a short circuit, internally or externally. Try disconnecting all the speakers, then turning up the volume. If nothing happens, connect one speaker at a time and turn up the volume to see if you get more sound. You may have a speaker that has shorted internally and this will help you discover the bad one. However, if when you have all the speakers disconnected, and the unit still goes into protection mode with the volume up, then there is a problem with the unit itself.

Hope this helps, and please rate my advice, good OR bad.

Good luck!

Feb 04, 2008 | Audio Players & Recorders

1 Answer

Amp protection light comes on when raising volume...


It sounds like you either have too low of an ohm load or the voltage is dropping at the amplifier's power terminal.

With your multimeter set to DC volts, the black meter lead on the ground terminal of the amp and the head unit on (so the amp will have remote voltage applied), touch the red lead alternately to the B+ and remote terminals of the amp. If the voltage is below ~11 volts, you need to check the wiring feeding whichever line is too low.


If the voltage remains near or above 12v, disconnect one speaker and see if it shuts down. If it doesn't, disconnect that speaker and connect the other speaker. If it only shuts down with both speakers connected and the voltage is staying above 12v, the ohm load is probably too low and you'll need to rewire the speakers.

Dec 31, 2007 | DB Drive A460 Car Audio Amplifier

1 Answer

Interior speakers cut out when the volume is turned up


You may have speakers of an incorrect impedance attached to the unit since the problem occurs when audio signal level is increased and the current goes up.The unit is shutting down to prevent damage. I would check the speaker connections and make sure that the speakers impedance are matched for the unit you are using.

Sep 03, 2007 | Eclipse EA3422 Car Audio Amplifier

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