Question about Denon DRA-455 Receiver

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Stuck in standy


thanks for your responce
i`m not sure how deep i want to get into this but it will give a try(if you are willing)
you might have to be patent with me lol



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  • john morgans Feb 25, 2009

    thats not the type of answer i was looking for m8

    anyway i have fixed the amp with another one of the techs on here


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I'm currently fixing one bought from that famous auction website.
Same symptoms: Standby led, nothing more.
I'm assuming you have checked the 2 obvious fuses...(?)
Mine had the the "thermal" fuse INSIDE the big transformer blown, to check this unplug the yellow and white wires from the small board where the AC in plugs are and measure the transformes primary resistance. (It should be around 13 ohm if transformer is OK.)
If primary is open-circuited things get harder: I had to unscrew the transformer then release it from its fixing plate and "U", break the white plastic close to the core. (where the white an yellow wires enter)
Then the delicate bit: With a fine screw driver / knife loosen the varnish and tape in the small gap where the wires enter without breaking the transformers copper wires. Rewire with a new fuse or like most technicians with no fuse. (In that case you still have overload protection from F601 on the rear board but no thermal protection.)

Posted on Apr 18, 2009

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If the amp comes on in standby that means it needs repair

Posted on Feb 25, 2009

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