Question about Sony STR-DE345 Receiver

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Settings for Sony STR-DE345

I just moved and can't find my manual. Right now, I have 5 speakers hooked up, but the rear speakers are louder than the front speakers and I can't get anything but a "hum" from the middle speaker. Help! Thanks!

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2 Answers

My sony STR-DE345 amp says "protect" and there is


The manual says it thinks there is a short circuit on the amplifier output side. If it still says Protect after disconnncting all the speakers wires there is an internal problem. Take it to a hands-on tech.

If the problem disappears, you had a short. Attach speakers one at a time to isolate the cause.

http://www.retrevo.com/support/Sony-STR-DE345-Receivers-manual/id/387bh943/t/2/

Dec 24, 2010 | Sony STR-DE345 Receiver

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Page 16 and 17 of the manual available at retrevo.com discuss setting the Center and Surround Modes and volume.

Select a Surround Field Surround Mode Function.

Dec 23, 2010 | Sony STR-DE345 Receiver

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My Sony model STR-DE345 flashes (Protect) 4 to 5 seconds after the power is turned on. It's not the speakers cause there not hooked up. How can I trouble shoot to find which part needs too be...


Sony receivers in this series do a series of tests on the integrity of the audio path before allowing voltage to be applied to the output transistors.
First make sure the speaker selector is set to "off". Test it again. If it still does the same thing then:
If you are comfortable removing the cover, take out the four side screws and the screws on the rear top of the cover. Look at the volume control and make sure the ribbon cable is firmly inserted in to the slot at the back of the control. The next part is a little more involved. There are two ribbon cables on the circuit board on the front of the face plate. One is close to the front, the other is not. You can remove the face plate and check thoes cables, but you must remove the screws from the bottom of the face plate and the one screw holding the volume control in place.
If this is all in place, I recommend sending it in to Sony for repair.

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the clicking is a power suplie overload some output amp is with problems and shutdown after overheat, when you tap is bad connection inside, normaly is related with sound off after 15min. needs to be checked by tech. to ensure perfect operation.

Jan 30, 2010 | Sony STR-DE345 Receiver

1 Answer

Sony STR DE845: rear speakers not working, three fronts are OK.


The rear amp is malfunctioning (duh). Take it to a tech for a real diagnosis.

Sep 05, 2009 | Sony STR-DE845 Receiver

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these do run hot, they don't have a fan so they need good ventalation. If your has completely failed you may be able to resolder the voltage str and stk voltage driver Ic's or replace them.

Jul 16, 2009 | Sony STR-DE345 Receiver

2 Answers

I need a schematic or service manual for Sony STR-DE345.


hi,

i can download it for you..
visit this site for manuals of your unit it will help you answer all your questions.

http://www.free-service-manuals.com/Detailed/15736.html

thanks,

you rate in our answers are much appreciated..

Feb 19, 2009 | Sony STR-DE345 Receiver

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HI...
It will need tech service.
Check the Sony consumer site for who can do it.

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Sony STR-DE595 Sound not balanced


preamplifier or power amp internally but check your signal cables for shorts or breaks,if amp then is internal and needs to be serviced

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Sony str-de875 amp. one speaker louder than the rest


hi. i have a sony amplifier. i plug the speakers in like normal. i turn it on and the right side speeker works fine. but you half to crank it up all the way just to barely hear the left speeker. we switched speakers and its still the same effect. we think its the amp itself. we tried our balance settings. it was fine. but right now its just playing one speaker louder then the left one. can anyone help me?

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