diyAudio Forums Archive > Top > Source > Analogue denon dp-47f repair - Click HERE for Original Thread jaudio Has anyone done repair work on the denon dp-47f speed controls? jaudio The problem I have is the platter wont turn. I can feel the motor vibrating but not turning. I measured the voltage on motor pcb,I'm getting -13.75 and +9.45( the stated voltage is +/-12) Any help? maxro I'm far from an expert here, but here goes. On most (all?) direct drive denons there is a magnetic strip inside the rim of the platter and a tape head type of device to read the platter speed. If the head is out of alignment, then speed will be wrong, but this shouldn't keep it from turning. If the magnetic strip has been de-magnetized, then it is toast. I don't think that this is the problem, though. If you start the platter spinning by hand, will the motor kick in? Does the arm lifter drop when you press the start button? The arm lift (and motor stop) has an optical sensor somewhere. Maybe it thinks that the arm is at the end of the record. good luck, Max jaudio Thanks for the response quote: Originally posted by maxro If you start the platter spinning by hand, will the motor kick in? No. It will rock back and forth,about a inch then it stops quote: Originally posted by maxro Does the arm lifter drop when you press the start button? Yes All arm functions work maxro Hmm... Well, I'm all out of ideas. Sounds like a circuitry problem. Perhaps someone else has a solution. Max jaudio Thanks Maxro jaudio It took 4 days but it working. I paid $22 for this turntable. It had a cracked frame and some broken traces. I epoxyed the frame and bridged the traces. All the functions work. Oh, It also came with a good audio technca AT OC9. I cant wait for the weekend,to sit down and give it a good listen. Thanks again for the Idea, where to look. jaudio Here another picture. I took off the OC9,while I was repairing the turntable. Maxro thanks again for the Idea, where to look maxro $22?! Even with four days of monkeying, that's a steal. Now you get to enjoy the fruits of your labours. Max maxro I was surfing and came across this if you have any future problems: http://www.vinylengine.com/manuals_denon.shtml Max jaudio Thanks I printed the service manual. I will need it to the adjustments. Operation manual wont really help,I cant read french.

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