Sony str-de345 this keeps on making a

Question 1

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I keep getting a protect flashing on my Sony str-de345 receiver even when nothing is plugged into and i can not figure out how to resolve this problem

If it's not heat you may not be able to resolve it yourself. A technician might.

Feb 21, 2011 • Sony STR-DE345 Receiver

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2answers

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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Is there an internal battery on the STR-DE345 Sony receiver for the pre-sets? Can it be replaced if there is. Receiver no longer holds pre-sets when there is a power outage.

There is no battery to replace to hold preset channels. The preset channels are held by a charged capacitor to maintain the nominal voltage level to the PLL (phase lock loop) tuner. The capacitor can only hold the charge for a few hours, and then it will slowly discharge - for like a short power outage.

Dec 24, 2010 • Sony STR-DE345 Receiver

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Fuse keeps poping, what other type of fuse can i buy for this, my model is STR-DE435 (sony)

If it keeps blowing the rated fuse you really need to take it in to a shop for further analysis. Using an incorrect, higher value fuse will only raise the risk of fire or more damage to whatever is blown in the unit.

Dec 08, 2010 • Sony STR-DE345 Receiver

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I have a sony reciever STR-DE345 that had some water pour over the top of and blew the fuse. After replacing the fuse, when I plug it in it keeps blowing the fuse. There does not seem to be anything else...

Shorted output transistors.

Jul 15, 2010 • Sony STR-DE345 Receiver

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Sony receiver STR-DE345 OVERHEATED how do i fix it ??????

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

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2answers

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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Loud buzzing at the first volume setting

Check all your wires and make sure that none of the wires that are powering any equipment (including extension cords, power bars, and power cables on the unit itself) are running parallel to any of the audio cables going to your speakers or from your inputs to your unit. This could be what's called AC hum, which is caused when the electrical current causes interference that gets picked up by the audio cables and amplified by your system. Just make sure you move the power cords as far away as possible from the audio cables.

Jan 08, 2009 • Sony STR-DE345 Receiver

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Settings for Sony STR-DE345

http://esupport.sony.com/US/perl/model-documents.pl?mdl=STRDE345

They have manual

Dec 07, 2008 • Sony STR-DE345 Receiver

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1answer

SONY STR-DE345

Having repaired many of this model and other similar models, I can get at teh board relatively quickly. That being said, it is a poor design for repairs. It is, however, cheap and quick for manufacturing. Take your time and remove all of the board screws, the screws that hold down the heatsink and the rear cabinet screws. The whole board should be able to lift from the back with a little patience. Be careful not to tear any of the ribbon connectors. With the unit on its side, you should have access to resolder any questionable joints.

Dan

Oct 31, 2008 • Sony STR-DE345 Receiver

Question 2

Joaquim Martins

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Posted on Jan 31, 2010

Joaquim Martins

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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.

Testimonial: "thanks you help was usefull the tech was working on it but it just died and was not worth fixing"

Answer 2

Glen Ingalsbe

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Posted on Jun 04, 2016

Glen Ingalsbe

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After a number of years of use, these Sony's tend to develop many bad solder connections. They can be anywhere on any of the several circuit boards within. You'll need to take it to a shop. If you want to download the service and users manuals go here:
http://www.manualslib.com/download/162899/Sony-Str-De245-De345.html
If your not a tech, they probably won't help you.

Download manual

manualslib.com

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Sony str-de345 this keeps on making a

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Joaquim Martins

Glen Ingalsbe

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Related Questions:

I keep getting a protect flashing on my Sony str-de345 receiver even when nothing is plugged into and i can not figure out how to resolve this problem

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

Is there an internal battery on the STR-DE345 Sony receiver for the pre-sets? Can it be replaced if there is. Receiver no longer holds pre-sets when there is a power outage.

Fuse keeps poping, what other type of fuse can i buy for this, my model is STR-DE435 (sony)

I have a sony reciever STR-DE345 that had some water pour over the top of and blew the fuse. After replacing the fuse, when I plug it in it keeps blowing the fuse. There does not seem to be anything else...

Sony receiver STR-DE345 OVERHEATED how do i fix it ??????

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

Loud buzzing at the first volume setting

Settings for Sony STR-DE345

SONY STR-DE345

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STR-DE345 Receiver

I keep getting a protect flashing on my Sony str-de345 receiver even when nothing is plugged into and i can not figure out how to resolve this problem

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Sony str-de345 this keeps on making a

2 Answers

Joaquim Martins

Glen Ingalsbe

Add Your Answer

Attachments: Added items

Related Questions:

I keep getting a protect flashing on my Sony str-de345 receiver even when nothing is plugged into and i can not figure out how to resolve this problem

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

Is there an internal battery on the STR-DE345 Sony receiver for the pre-sets? Can it be replaced if there is. Receiver no longer holds pre-sets when there is a power outage.

Fuse keeps poping, what other type of fuse can i buy for this, my model is STR-DE435 (sony)

I have a sony reciever STR-DE345 that had some water pour over the top of and blew the fuse. After replacing the fuse, when I plug it in it keeps blowing the fuse. There does not seem to be anything else...

Sony receiver STR-DE345 OVERHEATED how do i fix it ??????

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

Loud buzzing at the first volume setting

Settings for Sony STR-DE345

SONY STR-DE345

Not finding what you are looking for?

STR-DE345 Receiver

I keep getting a protect flashing on my Sony str-de345 receiver even when nothing is plugged into and i can not figure out how to resolve this problem

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