Question about Sony STR-DE595 5-Channel Amplifier

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I have an STR DE935 and the last few days if i turn the volume up about half way it kicks out and the word protector flashes in the screen , HELP

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  • mstrbreze Jul 10, 2010

    thanks ,i'll have it checked out

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Hi! IF the protect flashes then it will mean it reached its limit. If its not what its like before then something is wrong. Its gotta be a blown or faulty capacitor in the mainboard that needs to be replaced to get the maximum performance back again. HOpe this helps and have a good one!

Posted on Jul 10, 2010

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Protector comes on


Check on the output of the set, It can be short. remove the power supply from the section to confirm.
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Sep 15, 2010 | Sony STR-DE935

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Jun 09, 2010 | Sony STR-DE935

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Jun 06, 2010 | Sony STR-DE935

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Volume Control not working via remote. Works manually. Is there a motor or belt involved that may require replacement?


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Mar 15, 2009 | Sony STR-DE935

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Sony str-de935 protector flashing have to shake amp


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1 Answer

Protected


Oct 23, 2008 I have the same "Protector" problem. There is mention of this on Sony's website:

Follow the steps below to troubleshoot if the word PROTECT or PROTECTOR is flashing on the A/V receivers display.
  1. Check the speaker wires and speakers for proper connections.
  2. Reduce the volume level. IMPORTANT: If the receiver is played back at maximum volume level it may enter the protect mode. Maximum volume listening will cause the receiver to run very hot and may drain the output capacitors.
  3. Disable the surround sound option if both the A and B speakers are being used simultaneously.
  4. Ensure the top of the receiver has proper ventilation to keep it from overheating.
  5. If the message only occurs when using a DVD player, the sampling frequency may be set too high. IMPORTANT: Some receivers provide compatibility with the higher sampling frequencies through alternate connections. Consult the owners manual for specific information.
  6. Unplug the AC power cord for about 1 to 2 hours to reset the output transformers.
If the issue is still unresolved, service may be required. The Sony® eService Web site at http://eservice.sony.com/ can assist you in obtaining service from a Sony Service Center or locating a Sony Authorized Servicer.
**********************************************
I followed their "advice" to troubleshoot...now my unit's been in the shop for a couple weeks.
I called for status today 10/24/08 and was told that there is a "backorder on a part". My repair
shop cannot estimate when the "part" will be available.

SO...I suspect a component failure and since Sony does not have the part, the questions are:
1. Is there a delay in Sony getting the needed part from the manufacturer (if it's not Sony)
2. Are there so many occurrences of this problem that Sony can't keep the the "fix part" in stock!!

Time will tell!

Dec 02, 2007 | Sony STR-DE935

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