Question about Sony STR-DE525

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Protector mode the amp goes into something called protector when turned on and won't work

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Try resoldering all open circuits then on power supply section check the electrolytic. capacitors. which are 80 volts, 10000microfarads also check regulators which 5&12volts (la7805&la7812) and I suppose things will workout

Posted on Nov 22, 2013

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Power amp output short need replaced power outpot .....

Posted on Nov 16, 2009

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Zenith Pdp42t10000 won't turn on after power outage..it was on a surge protector which was still plugged in but was in "off" mode.


Connect something else to the same surge protector, and turn that on. Does that work? if not replace the surge protector.

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Lg km900 blank screen during an incoming call -


There is a little rectangle shape thing next to the lg logo on the top of the fone screen. If this is blocked by screen protector it will cause the phone to blank of during calls. Its a power saver that blanks the phone when its near your face. Try it. Take off the screen protector & make a call. Then place your finger over the little thing & the screen goes blank. Just cut a lil space in the screen protector & that will fix the problem

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Airplane mode keeps turning on so i have no signal and it wont turn off. It says enabling wireless connections and it does that for a few minutes then it just goes backj to being on. So i cant call or text...


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On this advice given by skinnman 33, it says "check your ground." How do you do that? I am experiencing the same problem with the led protector light coming on. It will play for about 3 minutes or so and...


When we say, "check your ground" all we mean is to look at the ground wire that connects to the amp and make sure it's adequately grounded. What I do is bolt it to a car seat bolt, that is the best ground you can get(called chasis ground). Try that and if you're still experiencing issues, troubleshoot it by removing one signal wire at a time. signal wires are the speaker and auxillary wires. Sometimes a short on these wires will cause the amp to go into protect mode. If you removed all your signal wires and all you have left on the amp is the remote, power(12volt battery) and the ground and your amp still goes into protect mode, then there's a short in your amp. good luck

Nov 21, 2009 | Lanzar VIBE286 Car Audio Amplifier

1 Answer

Protector light is on


Hello justin83wint,

If the amp goes into "protect mode" immediately upon power up, it's most likely a short in the power/ground or speaker connections. If it operates normally for awhile and then goes into protect, it's most likely overheating.

In the first case, I'd suspect something in the wiring. Go here to troubleshoot the possible causes.

An amp will most often go into protection from overheating due to being operated at too low of an impedance load. Check the speaker specifications and wiring and make sure that the final impedance load matches the amps rating.

Hope this helps.

May 09, 2009 | Sony XM-1252GTR Car Audio Amplifier

2 Answers

Sony str-de525 system "protector" problem


You've blown it. It recognizes a potentally harmful situation and goes into protect mode.

Mar 15, 2009 | Sony STR-DE935

1 Answer

Protector flashing


first check speaker connections for a short.Something usually is touching either at the reciever or amp.The receiver goes in protect mode when there is a short.If that does not work the receiver may be trying to push more watts than capable

Jan 01, 2008 | Denon AVR-887

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