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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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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).
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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.
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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.
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I have confirmed that the worm screw drive shaft for the arm mechanism is bent. Any suggestions as to how to straighten it?
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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
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[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.
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[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
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[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
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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
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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