Question about Sony STR-DE435 Receiver

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Sony STR-DE435 Receiver

Protector is flashed and nothing can be done to get it off. What do I do?

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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

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1 Answer

When I open my system it is writen PROTECTOR


Your receiver is in protect mode as a result of failure in the output stage(s) or components.

Aug 10, 2016 | Sony STR-DE435 Receiver

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The receiver has a short in the audio output stage in at least one channel, the parts must be replaced to bring it back up to normal operation.

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hello almbom
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Feb 13, 2011 | Sony STR-DE435 Receiver

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Thanks.

Oct 15, 2010 | Sony STR-DE435 Receiver

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Can I hook up a photo turntable to a sony str-de435 receiver? There aren't any jacks that specifically say phono, so I'm wondering if I can just hook it up to any of the audio jacks without any problem....


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Oct 19, 2009 | Sony STR-DE435 Receiver

1 Answer

Sony str-DE435 Flash Protector


this is not a reset problem, you have a defective audio output, is either the outputs transistors or the drivers IC's ( integrated circuit) and sometimes if you are lucky is just loose connections on the drivers IC;s.
good luck

Jun 18, 2009 | Sony STR-DE435 Receiver

1 Answer

Protector is flashing and nothing can be done to get it off. what do i do to fix it


you have defective audio output circuit, like the other ones y might be the transistors or the drivers IC's (integrated circuit ) you need some repair skills to fix this problem.
good luck

Jun 18, 2009 | Sony STR-DE435 Receiver

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Flashing protector


This usually means an output transistor is shorted and the amp is protecting itself. There are usually 2 8 amp fuses GMA type (glass tube) that are located near the large transformer on the main board that also get blown. You can try the fuses and see if it fixes it (10% of the time it will). If they blow again, it will be one or more output transistors are shorted, and the unit will need professional repair.

Jun 13, 2009 | Sony STR-DE435 Receiver

1 Answer

Receiver goes into protector mode


Nope, power supply it would not even power up.  The capacitors are fried

Jan 04, 2009 | Sony STR-DE635 Receiver

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STR DE435 PROTECTOR STR DE435


I have the same problemwith mine. the protector sign is on- I do not know why- and do not know what to do about it. Let meknow if you do or if you get assistance and I will do the same. My e-mail address is 1971CJS@Bellsouth.net

Jan 29, 2008 | Sony STR-DE435 Receiver

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