Question about Sony STR-DE345 Receiver

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Receiver shuts off/protect shows on display. turned off then back on did not help

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If the unit goes into this mode immediately, it suggests that the output transistors are shorted. This is a common problem that is easily address by anyone with audio repair experience. The parts are available generically and will run about $15 or so.

Dan

Posted on Mar 18, 2009

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How do I reset the protection circuitry on Yamaha RX-A820?


press and hold the 'tone control' and 'info' buttons and press power. This will release the protect. The first thing that show on the display will be the protect code to tell you why it shut down. If it turns right back off, then you most likely have a short in the amp that will need to be repaired.

Jan 25, 2015 | Yamaha Audio Players & Recorders

2 Answers

DVD system shuts down during DVD play with various parts of shows


I think this is the answer you are looking for.

Let me know if you need more help.

Knowledge Article C337191 Error: The message PROTECT or UNPLUG shows in the display.
Follow this procedure to troubleshoot when a PROTECT or UNPLUG error is displayed.
IMPORTANT: The top of the receiver must have proper ventilation to keep from over heating.
  1. Reduce the volume level.
  2. NOTE: If the receiver is played at the maximum volume level it may enter the PROTECT mode. Maximum volume listening will cause the receiver to run hot and drain the output capacitors.
  3. If both the A and B speakers are being powered by the receiver at the same time, turn off the surround sound option.
  4. If protect occurs only when using a DVD player, the sampling frequency may be set too high.
  5. NOTE: Some receivers provide compatibility with the higher sampling frequencies through alternate connections. Consult the user manual for specific information.
  6. Ensure the speaker wiring is not damaged and is properley connected to the back of the receiver and speakers.
  7. If the issue is still unresolved after completing all of the troubleshooting steps, service may be required.
Created: Thu Sep 16 14:49 2004 | Last Modified: Wed Jan 11 09:02 2006
http://www.iq.sony.com/srvs/autoresponsev4.asp?id=337191

Feb 13, 2008 | Sony DAV-FC7 System

1 Answer

Receiver


If the display shows overload, you are playing it too loud, or have too many speakers connected. Overload is a protection method used to shut down the unit, before it's damaged.

May 31, 2014 | Audio Players & Recorders

1 Answer

Power on then off


take it back sounds like a dud. sorry for the bad news. protection mode is a safety thing to help save the unit from further problems

Mar 28, 2014 | Yamaha HTR-5990 Receiver

1 Answer

I have a Sony STR-DE 597 reciever. I have been using it fine for a few years with no problems and it sounded great. I turn the unit on recently and a message was displayed on the unit that said PROTECT....


Protect will usually show up if the receiver was turned up too loud to the point where the speakers will crackle, the receiver will switch to protect to not damage anything. Unplug it for about 30 seconds and check all the audio wiring in the back to make sure everything is plugged in good and tight and no loose cables or stray pieces of copper audio wire and plug it back in.

Aug 21, 2011 | Sony STR-DE595 Receiver

1 Answer

The home theatre system LG HT904TA went in to protection mode. Mean that the receiver/dvd panel shown 'protection ' on the display panel. I have try to switch off /on but the 'protection...


If you've disconnected the speakers and the fault is still showing then the fault is internal with the Amplifier and it's shutting down to protect itself from further damage.

Your only solution is to remove the cover and have a look at repairing it yourself or take it to a repair shop.

Jun 28, 2011 | LG Audio Players & Recorders

1 Answer

My receiver clicks on a off randomly.


Hello Fixya customer,

Thank you for your question.

Are you getting on the display, possibly a "P" or "Protect" that indicates it is in the protect mode?

Hitting the top of the receiver indicates a possible intermittent component or board connection. The receiver will shut down when the Microprocessor receives various fault conditions, including shorted speaker and wires, but if it develops an internal fault it will also shut down to protect itself and the speakers.

Remove all speaker wires and inspect th terminals for any stray wires shorting the terminals.

If it still shuts down, then a professional servicer would be required.

Thanks for using Fixya, and if I can help you further, please let me know.

May 01, 2010 | Sony STR-DE545 Receiver

1 Answer

Why is it showing "protect" ?


You overrided your system and now it autoprotects itself so it won't get damaged. (solution) try to rewire your system (remove all cables and wait a few minutes and connect it all again.

Jan 16, 2010 | Audio Players & Recorders

1 Answer

Protect appears on display on kenwood kdc 3034


Disconnect all the speaker wires at the receiver and turn it back on. If itdoesn't go into protect mode, your receiver is ok.

Reconnect the speakers one at a time being sure to turn the receiver off each time you connect a speaker and turn the receiver on until your receiver goes into protection mode again.

When it goes into protect mode again, the last speaker you connected has a problem. Trace the speaker's wire to the speaker looking for cuts or shorts along the way.

If you have a multimeter, switch itto ohms and check the speaker for a dead short, if you show a dead short you have a blownspeaker. Hope this helps.

--Matt

Oct 07, 2009 | Kenwood Car Audio & Video

1 Answer

Getting a "Protect" message in the display which then shuts down


The speaker wires were al little frayed, so I cut and stripped new 3/8" leads and when re-inserted the receiver worked fine. The problem was a short from the frayed wires touching either the back of the receiver or some other metal near the terminal.

Dec 06, 2008 | Sony STR-DE185 Receiver

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