Question about Sony STR-DE945 Receiver

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Sony Str-DE945 5.1 not Powering Up all !

Will not power up at all .... was working fine. Power cord okay at both ends. All 5 fuses near power supply okay. Ac plug in in back of unit also not getting ac...

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  • lrhillcountr Nov 17, 2008

    I really appreciate the quick response. Problem is that my Sony Receiver will not power up at all ... completely dead! Possibly power supply, but don't really know ... will have to have it checked out, but cost is very high ... just for a check up!

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It's possible there are several bad solder joints on the front panel PC Board which can cause non responding controls, loss of sound. I repaired mine that way. Try turning it on with remote, see if that works.

Posted on Nov 17, 2008

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No! the fuse you replaced was fine, the power transformer may be shorted, or the audio ouput semiconductors are shorted, check the speaker wires for shorts, if okay! I recommend a pro with a estimate.

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Hi,
This problem is very common in this model the solution is to replace the fuse with improved one 10A 125V of type CES710A having part No.1-576-695-11. Remember that this fuse would be larger in size of earlier one so that you have to drill it first in the holder and adjust the fuse to a proper space of 1.4 drill bit.
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Loud buzzing at the first volume setting


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1 Answer

No output on main speakers


I have experienced a similar problem with my Sony STR-GX57ES and took it to a certified tech only to find it needed the power supply replaced. I opted to hunt down a compatible power supply but have been unsucessful thus far. That being said I picked up an STR-D665 for next to nothing and found the power supplies to be quite different (you would hope so any, with the ES meaning Elivated Standard and all) but with the D665 working flawlessly I'd rather have something working than nothing. Good luck!

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