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We need to isolate whether the fault is 335r one channel of the stereo FM receiver or in the amplifier itself. If sound comes out of both sides, then the tuner switch?

Speakers “A” – connected both left and right speaker, ensuring polarity is correct for both.

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.

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. I have tried this with both “A” and “B” speaker buttons engaged and get sound from the right speaker only in both cases. Thanks for your assistance. You must log in or sign up to reply here. Search Forums Recent Posts. Nov 3, 8. 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.


Try them if you have. If you have a mono switch, then switching to mono will provide the same signal to both audio amplifiers. Discussion in ‘Troubleshooting and Repair’ started by Pepi9, Nov 3, Given that the other channel works we can take it for granted that the DC positive and 335d rails are ok.

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.

Is there an easy way to clean the speaker selection switches? Nov 3, 2. Nov 3, 1. Nov 4, 9. I have ensured that the balance knob is in the centre position. Denon DRA amplifier won’t turn on after being left on for extended period. Nov 3, 4. I’ll just start out of the gate with what I usually find wrong when 35r happens: Tested Speakers “B” in same way.

After that, you can post your question and our members will help you out. Nov 3, 5.

Denon DRAR Manuals

Denon Receiver Acting Strange. Do you have headphones and a socket to use them in? That may not be your problem and you may have to troubleshoot to find the electronics failure, 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.

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Nov 4, You’ll need to choose a username for the site, which only take a couple of ddra here.

Nov 3, 7. Thank-you for the links to the manuals. It is quite likely that one channel is defective – a common problem with ‘second hand’ equipment.

Denon DRA-335R Manuals

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. Dec 7, 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.

Ask a Question Want to reply to this thread or ask your own question? I am also trying to find a User Manual for this receiver. Do both 335r work in any other mode? Nov 3, 3. Turntable only working on one channel.