Hi I just got a Marantz TT42 in good conditions. The problem is that once turned on it spins backwards. I could not fugure out any solution (the belt looks well placed). Another problem is that it spins very very fast (I supose like 4 time faster then it should).
if anyone has any idea about it...
Thank you veru much
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Re: Turntable spinning backwards
If it is a direct drive TT then it uses some electronic circuitry to control speed and it sounds like that circuit is having a problem. Possibly the actual driver IC for the TT motor has gone bad. Good luck.
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Jun 3, 2010 - 15 posts - 3 authors
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As the turntable was hit hard then an internal inspection should be done to look for signs of phyical damage. It could be anything from broken parts to bad soldering or a crack on the PC board. I rather suspect it should be obvious what got damaged when you look inside.
Hi,Dead as in no power up or dead as in the turntable will not spin?? If
the turntable isn't spinning check and see if you have a direct drive or
belt driven.Getting back to your turntable, if it is belt driven your
belt may have become dried rotted. replacements are available at
needledoctor.com ... good luck, definitely worth getting it up and running again...
My Marantz 6110 wasn't working right. I had it repaired at a stereo store. They told me the grease was old and had hardened which made it difficult to operate the way it was supposed to. They cleaned it and used new grease. It's been working great for the last 10 years. I hope this helps.
Check the small signal transistors BC338 and BC328, they're under the transport mech and will be near where the spindle motor plugs in to the PCB. One of the transistors acts as a brake which momentarily puts the motor in reverse polarity to stop the CD rotating during 'stop' or 'open tray' modes. The reason the CD is spinning backwards is that the transistor which drives the spindle motor forwards during playback is faulty and is triggering the braking transistor hence spinning backwards. The transistors should be 'BC328-25' / 'BC338-25' (25v) Replace these and all should be well.