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Sadly, there are no independent fuses PER CHANNEL so repair is likely to be down to replacement of something in the output stage of one channel – the main power transistor s are the usual suspects. Thanks for your assistance.

Tested Speakers “B” in same way. Nov 4, You’ll need to choose a username for the site, which only take a couple of moments here.

I am also trying to find a User Manual for this receiver. Nov 3, 7.

33r5 Try them if you have. Page 14 of the technical manual shows how and where to measure the amplifier bias current and by following those instructions you may be able to isolate WHICH channel the fault is in. Do both channels work in any other mode? I have ensured that the balance knob is in the centre position.


Denon DRA 335r 2 Channel 124 Watt Receiver

You must log in or sign up to reply here. Similar Threads Speaker not working. Turntable only working on one channel. Nov 3, 6. If you are ok with basic multimeter operation and use and reasonably skilled with a soldering iron I see no reason why you cannot successfully fix the unit. xra

Denon DRA-335R Manuals

Nov 3, 8. Nov 3, 5. Thank-you 33r the links to the manuals. I’ll just start out of the gate with what I usually find wrong when this happens: Given that the other channel works we can take it for granted that the DC positive and negative rails are ok.

If you have a mono switch, then switching to mono will provide the same signal to both audio amplifiers. Do you have headphones and a socket to use them in? It is quite likely that one channel is defective – a common problem with ‘second hand’ equipment.

Denon DRAR receiver Saanich, Victoria

Speakers “A” – connected both left and right speaker, ensuring polarity is correct for both. Ask a Question Want to reply to this thread or ask your own question? Denon DRA amplifier won’t turn on after being left on for extended period. Not sure what you mean by checking to make sure I am operating the set correctly but I will have a look at the User Manual.


If one side is still faulty, I would compare the amplifier voltages with the good side but this may be getting a bit deep for you. As with many electronic items like yours, repair is always possible but the final decision may be based on either your skill sets in managing the repair yourself with our full assistance of course or handing it over to a ‘paid’ repair service where the costs exceed the value.

Power cord plugged in. That may not be your problem and you may have to troubleshoot to find the electronics failure, Turning on the power and ensuring that I selected the “Tuner” mode, I located a stereo signal.


On a more positive note, these are widely available as replacements so fixing the unit seems more than probable. Dec 7, I have tried this with both “A” and “B” speaker buttons engaged and get sound from the fra speaker only in both cases.

Let me try this again as I appreciate the advice being provided and as such am confirming the steps I have taken below.