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I've just upgraded my DC motor Beogram 6000 to a cosmetically beautiful AC motor version. However, whilst the new turntable operates perfectly from a mechanical standpoint, it is outputting very low sound and is failing to decode CD4 quadraphonic records (the CD4 light does not come on and my rear speakers do not receive a signal). My thought is that the inbuilt RIAA/CD4 board has failed, or the turntable (as a very early example) may even have left the factory without it (though the switch for the decoder is in place). Or is there another explanation?
Sorry for asking this, but how can you downgrade a DC-motor version to an AC-motor version without noticing if a decoder has been installed?Did you keep the power to the decoder or did you remove it when you replaced the rest of the innards?
And why did you change to AC-motor in the first place?
Martin
It is not unknown for owners to remove or disconnect the decoder board and rewire the output to be compatible with Beomasters with inbuilt RIAA preamplifiers.
@Dillen I think the OP has replaced the whole turntable with a different model.
Regards Graham
Sorry, misunderstanding over my choice of words: I replaced a battered DC motor Beogram 6000 with an AC motor 6000 that looks like it just came off the production line. Two different machines, so no parts were swapped over. I replaced my DC motor turntable because it was on its last legs and had a heavily marked keypad, and I opted for an AC motor version as its internals are closer to a Beogram 4000.
You'll have to take a look inside and see if a decoder has been fitted.It's a large, heavily populated cicuitboard sitting under the operating panel.If so, check that it hasn't been bypassed.
Yes, I think that may be the only option. I'll ask the friend from whom I bought it whether he wants me and my dealer to do that or simply send it back so he can investigate it further.