20 Most Recent Sony STR-DE485 Receiver Questions & Answers


First, you have to find and correct the problems that caused it to go into protect mode. This can be due to failed components and/or poor soldered connections.

Sony STR-DE485... | Answered on Mar 25, 2018


Use RCA Cables from the TT to the Aux in on the Receiver. You may need to use a pre-amp inline from TT to Receiver.
http://www.bhphotovideo.com/ has a few.

Sony STR-DE485... | Answered on Mar 19, 2014


hi i have a protect error problem and the power is only pluged in

Sony STR-DE485... | Answered on Sep 28, 2013


are you sure what your plugging them into on the TV is an output? most of the red white yellow jacks on TV's are inputs not outputs. also on same thing on the receiver make sure its an input not output

Sony STR-DE485... | Answered on Aug 03, 2013


1-683-763-11 is the p/n for the headphone board. Should be easy to replace. Just unplug the old one, take take the screws out, and put the new one in.

Sony STR-DE485... | Answered on Apr 17, 2013


Protect on a sony usually means a short in the amp section. Would have to go in for repairs.

Sony STR-DE485... | Answered on Jan 24, 2013


This happens less often in "normal surround" mode

Sony STR-DE485... | Answered on Jul 25, 2012


This generally means you've got a short somewhere, and the received is trying to protect itself.

My suggestion is to disconnect all of your speakers at both ends, and reconnect them.

Most times this happens because a speaker wire is lose, and the positive and negative connections are touching each other, causing it to short out.

Sony STR-DE485... | Answered on Jul 25, 2012


Headphone jack is an output not input jack. Your going to need a cord to go from your headphone jack(output) of your phone to audio input on your receiver. The cord has a mini stereo plug to the phone and RCA plugs of left and right to your receiver auxiliary input. Good luck..

Sony STR-DE485... | Answered on Jul 15, 2011


Generally speaking, an amp attempts to protect itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.

Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.

You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.

If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.

If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.

Check for loose speaker connections at the speaker as a root cause for intermittent shutdown.

Sony STR-DE485... | Answered on May 29, 2011


Generally speaking, an amp protects itself from heat, shorts and overloads by refusing to turn on or stay on.


Overloads can be from excessive periods of high output and shorts would be wiring issues or a speaker blowing up.


You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.


If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.


If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced hands-on tech.

Sony STR-DE485... | Answered on Feb 05, 2011

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