Question about Sony STR-DB930 Receiver

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Sound problem Sir, I have Sony STR-DB930 Amplifier. For quite some I have been facing problem of sound output. Please let me know at the earliest what is to be done in the matter. My email id is Regards Meenakshi

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Re: Sound problem

It's most definately dry solder joints on the main PCB.
this is very common on this model and the DB-940.
these generate alot of heat when in use and is also the cause of the problem.
you may also hear the relays clicking from time to time and this means they'll need resoldering too.

hope this helps.

Posted on Jul 02, 2010

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Sony STR-DB 930. Intermitent sound quality from front speakers ( low then loud ) with sharp clicking noises like relay switches clicking on and off. Thanks Dave.

I have had this problem which then developed into the unit going into PROTECT mode. This is typically caused by the relays and perhaps some other components developing dry joints over time. I had a professional refresh the solder joints and it works perfectly now

Mar 25, 2011 | Sony STR-DB930 Receiver

1 Answer

Hi I purchased a sony av amplifier model STR-DB930 on e-bay a few months ago and I am using 3 ohm speakers from my old surround sound system. The output selector on the back of the unit is set to 4 ohms....

The lower number in Impedance specs is not a suggestion. It's a limit. 3 is not between 4 and 8.

Register and download the manual for free at

If you don't want to buy new speakers, settle for safer low volume levels.

You're going to kill that receiver driving a 3-ohm load. HTS-style speakers aren't reliably re-deployable to other electronics. Perhaps, if you have 4 speakers and they're similar you could wire them in SERIES and present a 6-ohm load to each channel.

Re-engineering the speakers themselves is, well, don't do it. It isn't rocket science but it also isn

Feb 28, 2011 | Sony STR-DB930 Receiver

1 Answer

Receiver str-v444es no sound on headphones or

discharge the output circuit! If you don't you will blow a 10 ohm resistor every time. I've worked on hundreds of these receivers I know. They need the output circuit soldered at the voltage driver ic's and quite possibly some capicitors replaced on the digital board. The caps mounted near the heat sinks dry up the fastest. These are nice amps. Larry's Electronics Sacramento Ca.

Apr 24, 2010 | Sony STR-V444ES Receiver

1 Answer

I have a Sony STR DB930. Something happend and it

The fuse blowing is a symptom of something seriously shorted internally. What preceded the initial problem? Smoke is bad. Fire would be soon to follow without the fuse blowing. Take it to a tech.

Feb 08, 2010 | Sony STR-DB930 Receiver

1 Answer

The idicator on my sony srt db930 reciever protector turn on.

There are a number of problem detection circuits inside the unit that will shut it down to prevent further damage. The most common cause of this is either crossed speaker wires or internally shorted output transistors. Try removing the speaker wires completely. If the unit still starts with the protect message, then the problem is internal to the unit. For these models, the output transistors usually cost in the $8-$15 range each and are replaced in complimentary pairs. Without taking internal measurements, I can not state that this is your exact problem, but it is the most common. Add in your local labor rate to get your approximate repair cost. Dan

Jun 09, 2009 | Sony STR-DB930 Receiver

1 Answer

No Audio

Maaybe ht eaudio amplifier IC´s are damaged and need to be replaced

May 22, 2009 | Sony STR-DB930 Receiver

1 Answer

Sony str bd-930 connected via digital input to ps3,no sound..

on the ps3 in audio options you have to set it so that the sound is going through the optical and not the hdmi. this it was I think the problem is.

Nov 16, 2008 | Sony STR-DB930 Receiver

1 Answer

Sound turns off for Sony STR-DE875 amp

If you do not here a click as soon as the power is turned on, (note you must be in a very quite environment no noise absolutely to hear this) then the amplifier has blown output transistors which are pushing DC current to the speakers.

Aug 31, 2007 | Sony STR-DE875 Receiver

1 Answer

Sony amplifier problem

I has the exact same problem with the same reciever. It was the neg and positive wires getting too close. Don't join wires together to get the length you want. Make sure you use atleast 16ga wire with NO interconnections. My short went right through electical tape when turned up. ng

Aug 26, 2007 | Sony STR-DE945 Receiver

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