I have a Sony STR-D565 Receiver. I bought new

get one of these,

You have shorted output transistors in the amp that need to be replaced.

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.

This unit most likely has shorted output transistors. The unit is entering protect mode which will prevent further damage to the unit. Expect a parts cost in the $40 range for this repair.

Dan

If the word "Protection" is not flash in the display when this happens, then the receiver is in a tight area where it can't get enough air and is over heating. There are temp senosors on the heat sinks where the output transistors are mounted, and they will shut down the power supply in an overheat situartion, but the protecting indicator shold flash. Blow some air over the receiver and see if that stops the problem.

Power output divide it by 110

example 600 / 100 + 5.45

you need to replace it with 6 Amperes or the closest as long as it is not lower than 6

You could have a shorted winding in the power transformer. The diodes in the power supply can be shorted. Filter capacitors can short and send power to ground which will blow the fuse.

this is a link just make sure to disable protected mode in internet explorer sometimes it has problems with links

http://www.docs.sony.com/release/STRD665.PDF

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http://esupport.sony.com/US/perl/support-contacts.pl?mdl=STRDG510

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