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Protection light wont go off

Hello i was listing to my music and then turned it down and 2 minutes later my protection light came on and now it wont go off. I had music down very low so there was no risk of blowing amp. Can you help?

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  • Perry Babin May 11, 2010

    If it goes into protect with no speaker wires connected to the speaker terminals and no RCAs plugged in, it likely has shorted output transistors. Read through the following page if you want to try to repair it yourself. Let me know if you have any other questions.



    Basic Amp Repair Primer

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Try checking the ground cable it migth be loose.. this happen to me once and it was a bad contact ground make sure the area is clean and tigth

Posted on Mar 13, 2009

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2 Answers

Good morning, I have the Hyundai hp4200 which will not turn on, when you switch on it clicks then 2 minutes later clicks again to onto I guess standbye. However, if you turn it on and off by the socket...


Yep, I can help but I am afraid that I won't be able to bring totally good news.

The TV is in forced standby also called "protection". Protection kicks in when an internal fault such as a short (big power draw) or a wrong voltage is detected. The click comes from a relay activated by the protection circuit to force TV to shut down.

All you can do is disconnecting the power cord, checking if there is a fuse built in the power cord, replacing fuse and connecting back after about 30 minutes (that allows power drain). If the TV does not work there are faulty internal parts that need replacement.

If now the TV does not start at all, and not even the standby light is on, then the problem is usually the PSU. The part must be tested and eventually replaced.

Here replacement parts for most flat panel TV models:ShopJimmy.

See also:
PartStore

Regards.

Ginko.

Sep 15, 2011 | Hyundai Televison & Video

1 Answer

Red protection light wont turn 2 green no matter what so the amp wont work


Hello mcis43fan,

The protection circuit can be activated by shorted or grounded wiring or it can be caused by a defect in the amp itself.

First, disconnect all wires except power, ground and the remote turn-on lead and see if the amp powers up normally. If it still goes into protection, the amp is defective, most likely shorted outputs and needs repair or replacement. If the amp powers up normally, test the other wiring for shorts and grounds. You can reconnect them one at a time to determine which one is causing the problem.

Hope this helps.

Aug 06, 2009 | Sony Xplod XM-1652Z Car Audio Amplifier

1 Answer

My Kenwood amplifier is having problems, whenever i turn it on. all seems well until i play some music through it, after 30seconds to a minute the music will cut off and a distinct click is sometimes...


Your amp is going into protection. The click you hear is a relay meant to protect your speakers and stereo. Check your speakers with an ohm meter for the the proper ohms ( listed on the speaker ) and physically try to push each woofer and midrange cone in gently to make sure it moves and is not stuck or frozen in place. A speaker may read correctly on an ohm meter if the woofer is ok but if the tweeter or midrange is not working it will cause the amp to go into protection mode. When you play music stick your ear up to each tweeter\midrange\woofer to ensure they are working.
Your stereo could also be the culprit although usually if it plays music it is ok as long as you are not hearing loud pops. Loud pops are voltage spikes that indicate that a transistor\IC is breaking down and will eventually short. Good luck!

barneyluc

Oct 01, 2008 | Audio Players & Recorders

1 Answer

Protection mode overuse


Flashing protection LED indicates there is problem with circuit. Have unit serviced

May 10, 2008 | Cambridge Audio Azur 640A Amplifier

1 Answer

Blinking protection light on mrv-t757 amp


Could be the power supply or output stage electrolytic capacitors.
Possibly breaking down/drying out inside.

Mar 17, 2008 | Alpine MRV-T757 Car Audio Amplifier

2 Answers

Overheating


Hi,

It probably has a fault.But try this.Disconnect all speakers and inputs and try again.If that works reconnect the speakers A PAIR AT a Time.That should lead to the fault.If that still shuts down.

the set is going into protection mode. This is caused when ever one of the many sections of the tv has a shorted circuit. The increase in current is detected by the protection circuit and it flies into action by turning OFF the ON relay.


Most often, but not always, it is either the high voltage section or one of the deflection amplifiers. But can be the power supply, the audio amplifier or voltage regulators, etc.

Goodluck..

Feb 19, 2008 | Samsung HLN5065W 50" Rear Projection...

1 Answer

No power


your set needs a tech due to excessive voltage the regulator got very hot causing it to damage when opperating systems a fan is needed to cool it off.goodluck.

Mar 29, 2007 | Yamaha RX-V1500 Receiver

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Cicuits Protection


You have a power supply circuit problem,you need a qualified serviceman near you.

Nov 27, 2006 | Technics SUV500 2-Channel Amplifier

1 Answer

Picture and sound go away after 2 minutes


Protection circuit fault kicks in. No vertical Deflection (V STOP),B+ over voltage protection (OVP), This is about a $150 -$200 to fix.

Nov 04, 2006 | Sony FD Trinitron WEGA KV-34HS420 34" TV

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