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Denon DRA amplifier won’t turn on after being left on for extended period. Nov 3, 2. 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.
Ask a Question Want to reply to this thread or ask your own question? As with many electronic items like yours, repair is always possible but the final decision may be based on either your dda 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 4, 9.
After that, you can post your question and our members will help you out. On a more positive note, these are widely available as replacements so fixing the unit seems more than probable. If you have a mono switch, then switching to dea will provide the same signal to both audio amplifiers.
Similar Threads Speaker not working. Power cord plugged in. 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.
Thank-you for the links to the manuals.
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. You 33r5 log in or sign up to reply here. 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.
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Turntable only working on one channel. Nov 3, 8. Nov 3, 7. Discussion in ‘Troubleshooting and Repair’ started by Pepi9, Nov 3, We need to isolate whether the fault is in one channel of the stereo FM receiver or in the amplifier itself.
Given that the other channel works we can take it for granted that the DC positive and negative rails are ok. Nov 3, 4. Tested Speakers “B” in same way. Turning on the power and ensuring that I selected the “Tuner” mode, I located a stereo signal. I am also trying to find a User Manual for this receiver. Denon Receiver Acting Strange.
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. Thanks for your assistance.
Denon DRA 335r 2 Channel 124 Watt Receiver
That may not be your problem and you may have to troubleshoot to find the electronics failure, Speakers “A” – connected both left and right speaker, ensuring polarity 3335r correct for both. Nov 3, 1.
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 3355r usual suspects. 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. The speaker selection switch needs to be cleaned or replaced.
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Is there an easy way to clean the speaker selection switches? I did confirm via another receiver that both speakers are in working condition. Dec 7, I’ll just start out of the gate with what I usually find wrong when this happens: You’ll need to choose a username for the site, which only take a couple of moments here.