Although I am a qualified electronics engineer,I have not been able to solve this problem on my Marantz CD 48 player.When a CD is inserted,the unit does not read the CD but instead it spins counter clockwise at very high speed.
When switched on,the Display shows..Read > No Disc and then the CD rotates counter clockwise.No functions work at this stage and the power has to be switched off and on again to eject the disc.The Laser does not seem to be switching on either.
Could someone help me solve this problem please?
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Re: Marantz CD48 - CD spins backwards
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.
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i found my dads Marantz CD-48 on the attic and had the same problem. Some CD`s the player was able to play instantly others not, getting the Error Message after trying to read the disc. My problem was solved after i opened it up and cleaned the linse of the player with a cotton swab.
If the system is less than 3 years you still qualify for manufacture warranty, usually it is accumulated dust, you can open the system's case and clean with a dust cleaner can, you can buy at staples, best buy, radioshack, and any major store.
If dust is not the problem than is an electronic problem, there is one electronic component that is in charge of closing the flap at xx speed. If that one is burnt out you can replace it, I recommend you have an electrician look at the circuit. or Contact the Marantz for warranty at: http://us.marantz.com/us/Support/Pages/ServiceCenter.aspx
HI, this is a possible spin motor issue,. try to reset the main board by unplugging the unit for five minutes. If the unit continues to not spin the disk, when inserted, this will confirm the damage to the spin motor. It must be replaced, in this case, by the manufacturer or a local electronics repair depot.
You may possibly have a fault with the RED RCA output plug on your CD possibly a loose wire on the internal side or a faulty plug altogether. Try plugging it into another stereo and see if the problem replicates itself.... if so then i am sure that will be the case.
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.