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Discussion in ‘Troubleshooting and Repair’ started by Pepi9, Nov 3, Search Forums Recent Posts. Nov 3, 1.

Denon DRA-335R Manuals

I am also trying to find a User Manual for this receiver. Nov 3, 2. Nov 3, 3. Thank-you for the links to the manuals. 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. Nov 3, 4. I’ll just start out of the gate with what I usually find wrong when this happens: The speaker selection switch needs to be cleaned or replaced. xra

Used Denon DRAR Receivers for Sale |

That may not be your problem and you may have to troubleshoot to find the electronics failure, Nov 3, 5. Nov 3, 6. Let me try this again as I appreciate the advice being provided and as such am confirming the steps I have taken below.

I am currently just trying to get the receiver to work in Tuner mode. Having said that, the only connections I have made are: Speakers “A” – connected both left and right speaker, ensuring polarity is correct for both.

Tested Speakers “B” in same way. I did confirm via another receiver that both speakers are in working condition. Power cord plugged in. Turning on the power and ensuring that I selected the “Tuner” mode, I located a stereo signal.


Upon turning up the volume, I am only getting sound from my right speaker. I have ensured that the balance knob is in the centre position. I have tried this with both “A” and “B” speaker buttons engaged 335g get sound from the right speaker only in both cases.

Is there an easy way to clean the speaker selection switches? Thanks for your assistance. Nov 3, 7.

Do both channels work in any other mode? We need to isolate whether the fault is in one channel of the stereo FM receiver or in the amplifier itself. Do you have headphones and a socket to use them in? Try them if you have. It is quite likely that one channel is defective – a common problem with ‘second hand’ equipment.

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.

Nov 3, 8. If you have a mono switch, then switching to mono will provide the same signal to both audio amplifiers. If sound comes out of both sides, then drx tuner switch? ddra

Denon DRAR receiver Saanich, Victoria

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. Nov 4, 9. Nov 4, The headphones are wired in circuit PRE-the A-B speaker selection switches therefore there is a fault in the amplifier stage of one channel. 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.


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.

On a more positive note, these are widely available as replacements so fixing the unit seems more than probable. Given that the other channel works we can take it for granted that the DC positive and negative rails are ok.

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. Dec 7, Just wanted to follow up and thank you for the responses and suggestions for the non working left channel on the second hand Denon receiver I bought.

Fortunately for me, I was able to return the receiver to the seller as I did not have any more time to spend on trying to repair it. I appreciate the time and support provided. Dr must log in or sign up to 33r here. Ask a Question Want to reply to this thread or ask your own question? You’ll need to choose a username for the site, which only take a couple of moments here.

After that, you can post your question and our members will help you out. Similar Threads Speaker not working. Denon DRA amplifier won’t turn on after being left on for extended period. Turntable only working on one channel. Denon Receiver Acting Strange.