I have a rotel RB976. Channel 1 and 2 shorted out. I toke it to the local repairman. He worked on it and said that part of the toriodal had shorted out, He also told me he couldn't find parts for this amp.
I really loved this amp. but not so much now that it is a 4 channel amp. Can it be saved
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Turn off the other channel and listen only to the bad channel playing some music. Turn it up! If you hear any music the pre-amp is working and the power amp is faulty. If you don't, then the pre-amp is faulty. Because it's a stereo amp you have the good channel to compare with the bad. So you can do voltage tests, or "buzz" tests. Buzz Tests or where you apply a insulated tool to the circuits, a buzz will be heard. If it buzzers in the good channel it should in the bad. Ignore the power supply and don't short any parts out!
YOU ARE NOT RIGHT IT SHOULD GIVE AT LAEST A LOW VOLUME SOUND WITH A LOT OF DISTORSION AND A CRACKING NOISE IF DOES I GUESS THAT YOU HAD THIS AMP IN A PLACE WITH A LOT OF HUMIDITY AND YOU HAVEN'T WORK IT FOR SOME TIME IF I AM RIGHT PUT YOUR AMP IN THE SUN AND WORK IT FOR 10 MIN WITH A 5 MIN BREAK LET ME KNOW THE RESULTS
Before we throw in the towel, turn it off and exercise every control a lot of times throughout its range, particularly the Tape Selectors. Sometimes oxides will develop on seldom used controls and their 'normally closed' contacts will not pass a signal.
If I understand you, the 'sound' of the AR preamp is what you're trying to preserve. Presumably you're just running a phono through it as nothing else needs a preamp these days.
The multichannel inputs bypass all of the Rotel's processing except the volume. Use the Front L and R.
hi
it sound to me that when you biamp and driving speaker and woofer , you are over loading the fuses , suggestions
uprate the fuses till they stop blowing
Unless yuo can find a Rotel authorized service center, you are not likely to find any service information. These units should not be difficult to repair. Their designs are pretty much standard with a few twists. Any shop that handles audio repair should be able to resolve this. If not, please post your location and I'll try to locate a shop for you.
Also, are there any indications that the unit is trying to work at all or is it completely dead?
if you say you checked the wireing ,did you check the speaker. disconnect on of the other speakers and connect up the center to see if you get sound. still no sound speakers bad. Got sound try unpluging unit for a couple of hours then try it again. still no center . Time for the repair shop. Good Luck
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