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In Reply to: RE: Help with Rotel RB-990BX! posted by Roypercy on October 18, 2016 at 11:25:58
Thanks again for the advice, everyone, and for the links (which were very helpful). As I said in a previous post I discovered that one of my speakers had an internal short; I'm running a pair of vintage speakers, University Dual Classic 12's, which are great speakers, but their weak point is small and flimsy terminals. A solder joint on the inside of one of them had gone bad, creating a short. So I fixed that and went back to the drawing board.Tonight I replaced the fuses in the Rotel one more time, hooked everything up, and lo and behold it all works. Thank heavens the fuses went before anything serious could blow.
I also remembered I'd had a similar experience some years ago, when I was just getting bit by the vintage audio bug. I brought home a minty Sansui G-5500 receiver and a pair of Realistic Nova 8B speakers from the thrift shop. Same thing happened when I hooked them up: one channel of the Sansui wouldn't play with the Nova 8Bs, but it played my Bostan A60s perfectly well. Somebody over in the vintage forum suggested I recap the speakers and check all the solder joints, and that turned out to be the issue: a shorted speaker that just made the receiver shut down one channel.
Well, live and learn. I'm very happy it all seems to be working, and I really appreciate being able to come here for instruction and advice.
Cheers!
Roy
Edits: 10/20/16Follow Ups:
Why is it my receivers used the output transistors as a "fuse".
Great job and enjoy.
I would check that other speaker while you still have a chance!!!!!
Thanks!
RC
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