Question about Sony STR-DA50ES Receiver

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

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SOURCE: protector fan

i have the same problem , help me

Posted on Jun 28, 2008

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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

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

1 Answer

Sony STR DB-930 Receiver jumping into protector mode

I went through the amp/receiver and used small star washers on all the grounding screws I could find including the one securing the transformer, cleaned dust off all circuit boards, checked output transistors and fuses, all OK.

Re Assembled unit and it worked OK.

I will buy a fan and fan it to avoid sourcing heatsinks for the previusly suggested IC's.

Thanks for the technical help, sure solved my problem.



Mar 07, 2008 | Sony STR-DB930 Receiver

1 Answer

Protector message

The only way to reset protect is to eliminate the problem which activated it. Problem may be insufficient line voltage or unit's output circuit. Have unit checked out by prof, tech

Sep 30, 2007 | Sony STR-DE825 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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