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How to do the work to fix it

This is a safety feature and can not be shut off. The system is detecting a problem in the last output stage of the amplifier and is shutting down to prevent further damage. I suspect a bad coupling capacitor in the pre-amp stage. This is a relatively simple repair for an experienced servicer. Figure on $10 or so for parts plus the local labor rate.
Dan
you said that but where is all this stuff. i dunno how to do any of that is there anywhere that i could take it or tell someone that can fix it

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Any service shop should be able to repair your machine. I don't know where you are located and am prevented by Fixya rules from pointing you to a specific referring you to a specific servicer. This type of problem is common and should not be difficult for anyone with experience. If you can provide me with the specific model, I should be able to list the probable defective parts.
Dan

Posted on Jun 04, 2008

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JVC FS-SD990R (CD shelf system) performs all functions with remote & unit buttons, but switches itself back to standby after 3-4 seconds. Power disconnect resets for the whole scene to be repeated.


More than likely it's a safety feature because it has detected a short circuit. Perhaps in a speaker connection? Or maybe in the power amp stage. Check out the device's on the heat sink.

Dec 09, 2016 | JVC Audio Players & Recorders

1 Answer

How do i keep the power on when it goes out in five seconds?


You can't. It's the systems' internal safety circuit shutting it down friend

Not an expert on those machines but it sounds like the power output stage is faulty and overheating causing a shutdown.
Needs new output stage or repair ?

Sep 14, 2014 | Boston Acoustics Avr7120 A/v Receiver

1 Answer

Sony de-435 protect on front


Protect means a problem has been detected in the audio output stage of the amplifier and safety circuits has disabled power from the output stage to prevent further damage. Check the back of the receiver for speaker wire shorts incuding fine threads of wire. The final issue is a short in the audio output stage in the amp that will need a tech to take it to the next level.

Jul 08, 2012 | Audio Players & Recorders

1 Answer

Have a sony tritron wega flat screen tv and it wont turn on, its red light blinks three times, what is the problem and how do i fix it?


Hello
Your TVs horizontal output stage is not working. That means, the line output side [LOT and related components], are inoperative. It may be due to some secondary missing voltages from the power supply section of your TV. There may be some open resistor, or short inside the Line Output Transformer [LOT] itself. Anyway that side is not working. Your TVs power supply regulator system has no trouble. It supplies the required voltage to the other sections. That is why you see the LED [Light Emitting Diode], fitted in front panel of your tv blinking for some time and shuts off. As soon as the TV is switched on, the power regulator system inside the tv will supply all the necessary secondary voltages to all sides. If at any section misses the required voltage, the system control Ic will detect it, and will try to rectify that. It is so programmed at the factory. If it can't do it, it will automatically shuts all the supplies from the power regulator system. It is a protection added by sony to all models of their Tvs.
You yourself cannot detect and repair this fault. Get the service of an experienced technician.

Oct 17, 2010 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

Power shuts off


The unit is in "protect" mode. Basically a problem is detected in the last output stage of the amplifier section and the unit shuts down to prevent further damage. I suspect that you connected too many speakers to the system. The impedence load was too low for the amp section to handle and one or more output transistors have failed. This should be a straightforward repair for any local repair shop. Figure on $20-$40 for parts plus the local labor rate for the repair. I am not familiar with your specific model, but these shelf units are all similar in design. I will try to locate the service manual for this one to get you more details.
Dan

Aug 16, 2008 | Philips FWC550 Shelf System

1 Answer

Kenwood XD-A5 - "protection" shut off feature


This is a safety feature and can not be shut off. The system is detecting a problem in the last output stage of the amplifier and is shutting down to prevent further damage. I suspect a bad coupling capacitor in the pre-amp stage. This is a relatively simple repair for an experienced servicer. Figure on $10 or so for parts plus the local labor rate.
Dan

May 22, 2008 | Audio Players & Recorders

1 Answer

My denon avr-a10se stop working. When I start, aftr thr quick intiation the amp shuts itself and the red power light start to blinvk quickly - please help


This unit is in protect mode. This means that a problem was detected in the last stage of the amplifier section and the unit shuts down to prevent further damage. The most common failure parts are the output transistors. These usually run between $5-$15 each. Add in the local labor rate for the total repair cost.
Dan

May 20, 2008 | Denon Audio Players & Recorders

1 Answer

Amplifiers


The unit is shutting itself off because it has detected a problem in the output stage. In many cases the problem is in the front end. That front end stage is allowing some DC current to pass on to the output stage. DC on the outputs is bad. This unit requires service. Expect a parts cost in the range of $10-$20. Add in the local labor rate for the total repair cost.
Dan

May 05, 2008 | Audio Players & Recorders

1 Answer

I have the denon avr3600, the protection is on, how can i turn it off, thanks


Unfortunately you can not just turn it off. Protection means that a problem was detected in the final output stage and that stage was shut down to prevent further damage to either the amp or the speakers. The typical problem is either the output transistors on one channel or the output amp chip for one of the surround channels. Expect a parts cost of about $25-$40 plus hte local labor rate for repair.
Dan

Apr 07, 2008 | Audio Players & Recorders

2 Answers

When power on it only shows protector and it doesn't work


The output transistors are probably defective. These are MN and MP transistors available from Sony and run about $12 each. There may be other components in the output stage that need to be replaced as well. Expect about $25-$40 in parts plus the local labor rate.
Dan

Mar 26, 2008 | Sony STR-DE525

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