Question about Sony STR-DE545 Receiver

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Problem with 'central' speaker output

Hi, i have had my Sony STR-DE545  for quite a while now, and just recently the central speakers have been sounding a bit funny!  Today, there is no sound from them atall!  I have tried connecting them to other outputs and they work fine, but when connecting to the central output....nothing.  Any ideas?!

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Re: problem with 'central' speaker output

Took apart my reciever and found that the blue relays in back in the middle are starting to malfunction. I tapped on them and they clicked. When I tapped the right one, i got the sound back in my center speaker.

Posted on Dec 07, 2007

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Str-de545 sony not putting out sound to rear speakers

From page 46 (Troubleshooting)-

No sound or only a very low-level sound is heard from the rear speakers.

>>> Make sure the sound field function is on (press SOUND FIELD - MODE).

>>> Select a sound field containing the word "cinema" or "virtual" (see pages 28-30).

>>> Adjust the speaker volume (see page 19).

>>> Make sure the rear speaker size parameter is set to either SMALL or LARGE (see page 17).

Jan 11, 2011 | Sony STR-DE545 Receiver

2 Answers

Right front channel not working

try to check balance adjustment if working.

Apr 16, 2010 | Sony STR-DE475 Receiver

1 Answer


It senses an error or problem and shuts down. Try disconnecting all the cables and wires attached to it. Try it again. If it still shows protect message, it is an internal fault and requires a repair shop. If it clears up, then the problem may be a shorted speaker wire. Correct the short when reconnecting the speakers.

Mar 08, 2010 | Sony STR-DE545 Receiver

1 Answer

My reciever is flashing the word PROTECT and will not function. It's a Sony STR-DE445

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 can assist you in obtaining service from a Sony Service Center or locating a Sony Authorized Servicer.

Dec 15, 2008 | Sony STR-DE545 Receiver

1 Answer

Protect keeps coming on

I used to get this when my speaker wires were touching each other and my 3yr old cranks the volume to Max. Check your Speaker connections you might want to take it all out and redo. Hope this helps.

Apr 20, 2008 | Sony STR-DE545 Receiver

2 Answers

Right audio channel not working

Most likely it's due to bad solder for the Blue Relays.It can be fixed by re-soldering.

Apr 04, 2008 | Sony STR-DE545 Receiver

1 Answer

The STR-DE545

Check for faulty speaker wiring and connections

Jul 29, 2007 | Sony STR-DE545 Receiver

1 Answer

No output on main speakers

I have experienced a similar problem with my Sony STR-GX57ES and took it to a certified tech only to find it needed the power supply replaced. I opted to hunt down a compatible power supply but have been unsucessful thus far. That being said I picked up an STR-D665 for next to nothing and found the power supplies to be quite different (you would hope so any, with the ES meaning Elivated Standard and all) but with the D665 working flawlessly I'd rather have something working than nothing. Good luck!

Dec 06, 2006 | Sony STR-D665 Receiver

1 Answer


If you took all the speakers off the reciver then it still goes into protect, the reciver detects DC on the output lines. That means there is a short in the output stage of the amp. It could be an output device, or a diffencal Transistor. If you can trouble shoot solid state electronics then you should be able to find the faulty, but if not your experienced at electronic repair, am afraid it may cost more then the reciveris worth. Good Luck PS please dont forget to rate this thread

Oct 23, 2006 | Sony STR-DE545 Receiver

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