Question about Sony MHC-GX450 CD Shelf System

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My sony mini hi-fi component model HCD-RV7, stereo wont come out

When i turn it on, only flashing Push Power Protect. what are the problems. Please help. thank you.

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How can i remove push power protect

Posted on Oct 03, 2009

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Audio amplifier IC damaged need to replace him

Posted on Feb 11, 2009

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How to solve this problem? when i pause a power button, the message is (eject) then in seconds trip off..

Posted on Jun 21, 2012

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STK442-130 fail, replace this.

Posted on Apr 20, 2016

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2 Answers

Hello.. I have Sony MHCEX500 MINI HIFI Component system. There is a problem of PUSH POWER PROTECT. How can I fix it..????


The "PROTECT" and "PUSH POWER" messages will flash alternately when the protective device of the amplifier has been activated because a strong signal was input, or if there is a short-circuit detected. Press the POWER button on the unit to turn off the system, and check the following items after "STANDBY" disappears.

1) Are the + and - speaker cords short-circuited?
2) Are you using only the specified speakers?.
3) Is anything blocking the ventilation holes of the system?

Apr 12, 2016 | Sony Audio Shelf Systems

1 Answer

It wont turn on, it shows 'push power protect' when you turn it on, or disconnect it and reconnect, i already attempted to disconnect the Sony Stereo MCH-EC909iP Mini Hi-Fi and it shows 'Push Power, P


The only thing I can think of is its goin into protection mode like an amplifier would, you maxed the volume out and it's protecting your speakers or you don't have the right voltage going to it, I can see you don't have it on a straight 120v plug and you might have the wiring wrong on the speakers to it might be too low of a ohm or too high

Nov 22, 2012 | Audio Shelf Systems

1 Answer

Sony hcd-gx470 manual


My Sony Mini MHC-GX470 have been working until a power outage yesterday and now it will start coming on the goes back to standby mode. I can hear it going through the system, starts the radio and immediately goes to STANDBY.
I need HELP!!!!!!!!!!!!!!!!!!!!!!!!

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I was accidently connected the subwoofer ,when my sony hi-fi volume level is 30 (maximum)...and then it automatically shutdown..after that,it started to show PUSH POWER ,PROTECT..


Hi, I believe the sub is the wrong kind for your system. It should be a selfpowered sub one that you plug in to AC power and then connect to Hi/fi. You could do some damage to your system if you carry on with that. Good luck

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Protect push power


audio amplifier IC fried need to be replaced

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Check if there got fuses for the speaker and check if them are good

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Sony Mini Hi-Fi Component System (MHC-RG660)


I understand the problem. It should be the relay which is not responding, technically not able to connect the system power supply, you will have to replace the relay. The STK chip should be working fine.

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2 Answers

HCD-XG500 it says push power protect


Power protect tends to mean the main power amp chip has "blown" and needs to be replaced. It only costs about 20 dollars (10GBP). If you are handy with a soldering iron it is easy to do (after you get the thing to bits !) It is the big black thing on the big heatsink inside. The Sony part number is STK442 - 130. Seems a waste to throw the whole thing away for the sake of 10 pounds !. Hope this helps. Nik Howell (nh@totalise.co.uk)

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