Question about Sony STR-DE310

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Str-de310 goes to protect mode with nothing hooked up to it except the power

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  • 13 Answers

Speaker positive and negative terminals are short circuited, carefully inspect the back speaker terminal if a small single strand of a wire causing this.

-SS

Posted on Nov 15, 2013

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Posted on Jan 02, 2017

ginko
  • 19396 Answers

SOURCE: stuck in protect mode

Protet mode is a special diagnostic mode that starts when a fault is detected.

When in protection mode the unit is prevented from starting by protection circuit, so to prevent further damage.

Check the speakers and speakers wiring, a contact in speaker wires, or faulty speakers can send the unit in protection.

Try unplugging power cable for one hour or so. then connect cable back and see if you get rid of protect state. Sometimes accumulation of electrostatic charges inside circuit capacitors can kick in protect mode. In that case unplugging the unit from main for some times can get rid of electrostatic charges, and reset circuits by draining power completely.
If that was the problem, you will not get Protect when plugging back power cable.

If you do all the above and still get Protect, then there is a real fault.

In that case the unit may be disassembled and tested to find the fault.

If that is the case I suggest contacting the manufacturer at the number listed on the owners manual, or asking a quote on repair to a local technician.

Posted on May 29, 2009

  • 167 Answers

SOURCE: Sony STR-D715 Protect Mode

Hello,
This is a common problem...
It is in fact a bad power-amp module.
I have repaired quite a few of these receivers by replacing it.
The module is inexpensive. I Googled the Part number and found several sources for it.

Good luck!

Posted on Oct 10, 2009

  • 118 Answers

SOURCE: my sony STR-DE695 flashes protect with nothing

if it is in protection mode with no speakers connected, then youve got an internal problem which will need repaired

Posted on Feb 23, 2010

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You have two speaker wires touching. Check each speaker and the back panel jacks. Even a single strand of wire will short things out and lock the protection mode.

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http://pdf.crse.com/manuals/3859380111.pdf


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hey painkiller.. :)

Have you tried disconnecting it from the mains power for 20 mins or so then fire it up again. This will allow it to reset. Often fixes this sort of problem. If not, get back to me here and we can try some other things.

gotta love black sabboth :)

regards
robotek

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