Question about Sony STR-DE497 Receiver
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Posted on Jan 02, 2017
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Posted on Jun 02, 2008
SOURCE: Sony STR-D665
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
SOURCE: sony str db870 master reset
If the power of the Receiver is ON, press Power to turn OFF the power. Then, hold down the MODE + button and press the Power button together.
S.F Intialize appears in the display and all sound fields are reset at once.
Posted on Sep 22, 2009
I believe what you want to do is as follows. Turn off the power supply. Hold the buttons 6, 7, 8. And turn on the power. The display should activate all options, then turn on and off a few times and finally display End. Then the memory should be reset back to Factory.
Posted on Apr 11, 2011
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