Question about Sony STR-DE945 Receiver

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My str de 945 will not power up when i hit the power button

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Most often that is caused by a failure in the power supply or one output channel. Try disconnecting all the speakers and see if it will power up (relay click) without them. If it does they you have poor connections at the back or the receiver or the speakers. Possibly a failed speaker. If the unit powers up then add one speaker back at a time and repeat the start up. Make sure that no bare wires are touching each other anywhere. If that doesn't solve the problem or if it won't start up with no speakers then it's a trip to the repair shop time.

Posted on Aug 24, 2010


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Have a str-de 945,unit was working,sound stopped,still powers up.Replaced 2, 8 a fuses,blew again,nothing was connected to the unit.The heavy power supply unit in the front seems to have a hard orange...

Chances are you have shorted output transistors,check with ohm meter across all 3 legs,there should be no shorts if good.. cost on average around 150.00

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Sorry to be the bearer of bad news, but the part is no longer available from Sony or any of its distributors. Your best bet is to check with some local repair shops to see if they have a scrap unit around from which you can get the part.

Another posibility is to remove the part and try and locate the part using the manufacturer's part number that shouldbe stamped on the part itself. I believe that these are made by AMP.

Can you post your location as I may have one of these in my stash.


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