Question about Sony STR-DE335 Receiver

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Why doese the display window flash " protect " on my sony STR-DE335 reciever ?

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It is over heating

Posted on Jun 25, 2009

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Posted on Jan 02, 2017

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1 Answer

My Sony str de335 is in protection mode speakers are unhooked how do I get it out of protection mode?


if you disconnected everything and it still goes into protect, the most likely there is a damaged amp channel that will need to be repaired.

Feb 23, 2015 | Sony STR-DE335 Receiver

1 Answer

Why is protect is flashing on display


There is a defect that is causing the light to come on. It could be a bad output transistor or some other defect that produces excessive heat. The cooling fan could be at fault too.

Aug 27, 2014 | Sony Str-d350z, Av Am/fm Reciever, Home...

1 Answer

My reciever wont come out of protect mode sony reciever str-de335


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.

Jul 14, 2011 | Sony STR-DE335 Receiver

1 Answer

Sony str-de335 flashing protect when powered on and no sound comes out


Please see the link below for an explanation of protect mode. After that, please post here any additional questions that you have. Specific to your model, you can expect a parts cost in the $40-$60 range for the repair.

Dan

Link: http://www.fixya.com/support/r5390728-protector_means

May 20, 2011 | Sony STR-DE335 Receiver

1 Answer

Hello my sony audio/video control center #STR DE335 is in PROTECT MODE.. and i cant listen to it..can u please tell me whats wrong?


PROTECT display indicates that receiver got serious problem in output amplifier section and protection mode is activated to avoid further damage.
Output amplifier section should be tested by qualified technician to find out and replace defective part(s) to solve this issue. Local repair shop will do this job as it is not user level repair.
Thanks.

Apr 29, 2011 | Sony STR-DE335 Receiver

1 Answer

PROTECT shows every time I turn my reciever on. It's a SONY model #STR-DE335


Turn it OFF. Look for shorted speaker wires or shorted speakers.

None found? Disconnect all speaker wires and try to turn it on.

Turns on ok? One of the speakers/cable pairs is shorted. Check them again.

No good? It's dead. take it to a tech.


http://www.retrevo.com/support/Sony-STR-DE335-Receivers-manual/id/387bh942/t/2/

Jan 08, 2011 | Sony STR-DE335 Receiver

1 Answer

Connecting dvdplayer. how?


connect the DVD video out to your TV video in, and connect your DVD audio out to your Sony STR-DE335 Audio in. In this way you can watch movie while listening thru your Sony's amplified sound.

Jun 13, 2010 | Sony STR-DE335 Receiver

1 Answer

I have a sony str-de335 fm stereo receiver and


This can be shorted output transistors (common) or a defective voltage amplifier IC. WIthout taking measurements inside, there is no way for me to make that determination. In any case, this should be a relatively simple repair for a shop that repairs audio gear. Expect a parts cost in the $25-$40 range.

Dan

Aug 19, 2009 | Sony Audio Players & Recorders

1 Answer

"Protect" Flashing


In all likelyhood, one or more output transistors have failed. Please confirm your model as STR-DE335 and I'll post the probable parts that need to be checked.

Dan

Jan 22, 2009 | Sony STR-DE335 Receiver

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