Question about Sony STR-DA50ES Receiver

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Fan good, fuses good, no shortage at outputs. Please HELP !

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Posted on Jan 02, 2017


SOURCE: protector fan

i have the same problem , help me

Posted on Jun 28, 2008


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I have Home Theater Sony DAV- DZ151Kb. Display Push Power and then PROTECTOR. I need Help

Push power protect message appears when home theater got problem in amplifier output section and any output amplifier chip becomes bad, receiver set protection mode and refuse to power up to avoid further damage in circuit board.
It is very hard for novice to troubleshoot what output chip is defective out of six amplifier output ICs in unit, check by professional is needed to solve this issue.
Hope these info will help you.
Let me know if you have additional question.

Jan 14, 2011 | Sony Audio Players & Recorders

1 Answer

Protector flashes everytime the unit is turned on.

Please see the link below for a generic explanation about protect mode. Please post any additional questions that you may have here and I'll respond.



Sep 10, 2010 | Sony STR-DA50ES Receiver

1 Answer

I need a motherboard for a sony STR-DA50ES audio receiver and no shop was able to find one.

These boards are no longer available from Sony. What is the problem you are trying to solve? I have never needed to replace the entire board. One other option is to locate a "broken" unit from shop or Ebay and use the board from there.

If you can describe the problems, perhaps we can help to repair the existing board.


Apr 21, 2010 | Sony STR-DA50ES Receiver

1 Answer

Sony DA50ES makes loud and scary clicking noise after its been on for about ten minutes, its loud enough to be distracting and annoying while watching movies. I'm wondering if I need to buy a new receiver...

Is the noise audible through the speakers or is it a physical clicking directly from inside the receiver?

If the former, what source(s) do it and are they digital or analog?

It doesn't appear there is a fan so NO physical noises should emanate from the receiver. I'd suspect an arcing component or something electrical. THAT might be dangerous to the receiver or even a fire hazard. Get it looked at.

Feb 24, 2010 | Sony STR-DA50ES Receiver

1 Answer

Sony str-da50es. Does not power when power button is pushed.

This problem is very common in this model the solution is to replace the fuse with improved one 10A 125V of type CES710A having part No.1-576-695-11. Remember that this fuse would be larger in size of earlier one so that you have to drill it first in the holder and adjust the fuse to a proper space of 1.4 drill bit.
Do the changes and your product work fine.

Nov 24, 2009 | Sony STR-DA50ES Receiver

1 Answer

The system will not power on. I changed the blown fuses but when

Sony has service centers in several areas of maryland. If you go to and "Support" you can find one in your area. Hope this helps. If you can't locate one, I use to Live in MD. What area? post a comment and I can find a good svc center for you.

Aug 16, 2009 | Audio Players & Recorders

1 Answer

Power protector on sony surround sound system

Power protect is an error message that some thing is wrong in your sound system and requires qualified tech.

Normally that error message appears when unit got problem in amplifier output section, either it is speaker problem or some output chip is fried.

Feb 25, 2009 | Sony DAV-S400 System

1 Answer

The word protector puts on when power to stereo is turned on...

This is not a fuse problem. The rotect mesage indicates that the unit detected a problem and shutdonw the unit to prevent further damage. Disconnect the speaker wires and try turning on the system. If protect still occurs, there is an internal problem *usually shuorted output transistors) that will require service. If you can solder and wish to attempt the repair yourself, update this and I'll provide additional details and instructions.


Jan 22, 2009 | Sony STR-DA50ES Receiver

4 Answers

Protector fan

Sounds fried. Time for a trip to the shop. Good luck.

Jan 22, 2007 | Sony STR-DA50ES Receiver

1 Answer


If you took all the speakers off the reciver then it still goes into protect, the reciver detects DC on the output lines. That means there is a short in the output stage of the amp. It could be an output device, or a diffencal Transistor. If you can trouble shoot solid state electronics then you should be able to find the faulty, but if not your experienced at electronic repair, am afraid it may cost more then the reciveris worth. Good Luck PS please dont forget to rate this thread

Oct 23, 2006 | Sony STR-DE545 Receiver

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