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ARCHIVED FORUM -- April 2007 to March 2012
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This is the first Archived Forum which was active between 17th April 2007 and 1st March February 2012

 

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  • Re: Turntable Speed changing on Beogram 4002 (Related to my earlier post on the same 4002)

    The capacitors and resistors I am referring to would create a small electrical delay in the current to one of the coils within the synchronous motor. (They helps start-up and constant speed and well as the direction of rotation of the motor. The caps are often called start/run caps or phasing caps).
    Posted to BeoGram (Forum) by Telecine on 02-28-2011
  • Re: Turntable Speed changing on Beogram 4002 (Related to my earlier post on the same 4002)

    Not sure about the Beogram but these symptons commonly occur on Rega Planar 3 and P3 turntables (speed instabilty and motor rotating backwards). It is never the motor. The problem is the run/start capacitor and associated resistor on the motor PCB. That is where I would look.
    Posted to BeoGram (Forum) by Telecine on 02-27-2011
  • Re: BeoGram 4000 – In need of Help

    Thanks Mika. I don't think that there is any other way either. I will give the approach to straightening it a bit of thought. Does anyone know whether or not a BG 4002 worm drive shaft will fit in a BG 4000? It would appear to solve a few problems for a number of people if it did.
    Posted to BeoGram (Forum) by Telecine on 02-20-2011
  • Re: BeoGram 4000 – In need of Help

    I have confirmed that the worm screw drive shaft for the arm mechanism is bent. Any suggestions as to how to straighten it?
    Posted to BeoGram (Forum) by Telecine on 02-18-2011
  • Re: BeoGram 4000 – In need of Help

    Some further progress, I have obtained a grub screw and installed it. The drive pulley still wobbles around somewhat when driving the arm. It appears to have a round opening on one end and the D shaped opening on the other. I suspect that I need to position it so that the left hand side is on the round portion of the worm screw drive shaft and the right
    Posted to BeoGram (Forum) by Telecine on 02-14-2011
  • Re: BeoGram 4000 – In need of Help

    [quote user="joeyboygolf"] There are 5 screws holding the plinth. 4 are obvious plus one under the control panel. [/quote] Thanks Graham. I don't think that I would have found that one.
    Posted to BeoGram (Forum) by Telecine on 02-13-2011
  • Re: BeoGram 4000 – In need of Help

    [quote user="Doctor"] The wooden plinth replaces easily. I have swapped mine around. The plastic washers that hold it are pretty fragile though - I replaced the ones on mine. One of my decks had a particularly hard life - someone left it in a damp cellar and the metal corroded. It has however been reborn ! [/quote] Good to hear that the plinth
    Posted to BeoGram (Forum) by Telecine on 02-13-2011
  • Re: BeoGram 4000 – In need of Help

    [quote user="Step1"] I would like to do something similar to one of my less than perfect examples Peter! The real trick would be to work out a solution for the platter! I am thinking about it.... @Telecine well done so far. Lets get that pulley sorted before moving on. There could still be a split that might only become evident when screwing
    Posted to BeoGram (Forum) by Telecine on 02-13-2011
  • Re: BeoGram 4000 – In need of Help

    A quick update. I disconnected the drive belt for the arm until I obtain the grub screw to lock the pulley in place. I have now fitted the control panels back in place thanks to Olly's instructions. I figured that I could always take them off again later if need be. So I have made some progress. The deck does not start spinning straight away now
    Posted to BeoGram (Forum) by Telecine on 02-13-2011
  • Re: BeoGram 4000 – In need of Help

    Thanks Olly. I have checked the pulley and it is not split. I will check out a hobby store or jeweller if one doesn't materialise elsewhere. I intend to update my membership shortly so I will get the service manual then. Now that you have described the process, I can see how the control panels attach. Thanks so much for that. Let me know how you
    Posted to BeoGram (Forum) by Telecine on 02-12-2011
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