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Preamp not working

My Audio Buddy Preamp is hissing and crackling. One input is not working at all. Through a process of elimination I have worked out the cables etc are OK.
Please advise if it is repairable and if so, an estimate of cost would be great.

Thanks

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Befor we go inside we make cleaning with lubricant contact cleaner from radio shack and apply it over all control switches while you are moving it-apply also in all sockets and put your plugs in it(in-out-in-out).after all above if not pass you have to ask for help from qualified service center.

Posted on Jul 21, 2008

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Preamp Noise


The rectifier is the only thing wrong with the amp. Typically a bad rectifier will pop fuses but that is not the only thing than can cause that. You could try pulling tubes to see if you could isolate the problem. Just be careful if you haven't even taken the tubes out before, those PCB sockets are kind of flimsy. pull one tube at a time and see in the crackling goes away

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Mar 27, 2011 | Sunfire Cinema Grand 200 Five 5-Channel...

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I just got one what is it an how does it work an how do i hook it up?


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you will need additional equipment for this beast to work right.
1. you need a pre-amp, all audio connections go into the preamp which control sorces, volm, bass and treble.
2. out from the preamp into the power amp and out to your speakers

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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.

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Hi KenO2

First thing to check is that the phantom power is not turned on. If you are using a condenser mic, then it should. If you are using dynamic mic, then it will crackle and makes weird noises in the manner you describe. Other than that it sounds like you have a failing op amp in your preamp. This sort of repair work is not expensive(with respect to the outcome). I would anticipate $40-60 to fix it. Trouble is you can replace it super cheap at the moment 45% off for $64.95plus $9.95 shipping from zzsounds

So I guess that it may not be worth repairing, and more a replacement item for that money. If you have a mate with electronics experience, you could just replace the opamps at home for $10 worth of parts.

If you think my advice helped you to work out what to do, a FixYa rating would be great. Cheers

regards
robotek

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I would use sheilded wire on the mic with the least amount of cable. You can relocate the pre amp with aluminum foil wrapped around the pre amp. also turn the gain on the mic down as to eliminate any interference from your strong radio station nearby. Randy

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