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Sony dh520 blowing fuses - Sony STRDH520

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How do I adjust the treble and bass on sony str-dh520?

See EQ Mode on page 59 of the owners manual to set the bass and treble for the front speakers, presumably for 2 channel mode. For multi-channel mode there are several pre-programmed audio modes listed starting on page 43 and music mode starting on page 44.

Mar 02, 2015 | Sony STR-DH520 A/V Receiver

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STR-DH520 Sony av receiver , Protect sign keeps coming on and I have no wires connected at all! How can I fix ??

There is most likely a short in the amp that needs to be repaired. Probably a pair of shroted output transistors as well as a few resistors will need to be replaced.

Dec 17, 2014 | Sony STR-DH520 A/V Receiver

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Dh520 protect mode

Usually means you have a blown amp channel. Shorted output transistors and burnt resistors.

Oct 06, 2014 | Sony STR-DH520 A/V Receiver

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I have a Sony AV model str-dh520. The protection circuit keeps coming on then shuts down. I tried unplugging all the speakers from the unit but still protection circuit is still activated and shuts down....

Hello there friend,
Go here at Sony for some ideas to try when PROTECT shows on your machine.,66/p/41901,43145,92877,44396/

It seems the main amplifier chip / circuit may be overheated or short circuited and is now permanently faulty and need replacing Generally means desoldering the chip and replacing.

Sep 08, 2014 | Audio Players & Recorders

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How to get sony air-sa10 to pair with str-dh520

Interesting problem. Note that this wireless system is proprietary - meaning that only Sony provides a solution for you.

From what I have been able to research (remember, Google is your friend), you will need an adapter for your receiver to generate the proper wireless signals. See the links below: Sony EZWT100 AIR Signal Transmitter Black Old Version Looking for Answers about Sony ALTUS AIR Transmitter for AIR Compatible...

Apr 27, 2014 | Sony Air-sa10 Wireless Speaker System...

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Blew the fuse then i put an other one and dit it again

Check your speakers. If the impedance is lower than 8 or higher than 16 Ohms (symbol Omega), DON'T USE IT WITH YOUR DEVICE !!!

Anyway, do the following test : unplug all your speakers from the back panel, change the fuse, and turn the Sony on. If nothing happens, you have a problem with one of your speakers.

So you can try to re-plug your speakers (plug with your device off) one by one to see wich one blow the fuse, or open all of them to detect an eventual short-circuit.

Hope this was helpful

Apr 15, 2014 | Sony STR-DH520 Receiver,7.1Ch,3D,100WCh,...

1 Answer

Sony str dh520

If it's blowing the fuse, then there are probably shorted output transistors in the amp that need to be replaced.

Jul 10, 2013 | Audio Players & Recorders

1 Answer

Uverse remote s-10-s1 codes for sony str-dh520

For Sony STR-DH520 the AT&T Uverse code is 5151.

Jun 07, 2012 | Sony Audio Players & Recorders

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Hi I have a str-dh520 reciever that has a 8 amp 125 volt fuse that blew and I could only find a 8amp 250 volt fuse and when I installed it it blew right away. What do I do now? Dose it have to be a 125...

No! the fuse you replaced was fine, the power transformer may be shorted, or the audio ouput semiconductors are shorted, check the speaker wires for shorts, if okay! I recommend a pro with a estimate.

Mar 19, 2012 | Sony Audio Players & Recorders

1 Answer


It depends what kind of output connections you have on the turntable.

Are they standard RCA connectors?

Jun 11, 2011 | Sony STRDH520

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