If the fuse blows it means that there is power to the motor no? Unplug just the motor from the circuit board and power up. You should get a voltage across the fuse and ground. So what's between the fuse and the motor? Check the schematic, I think only a transistor maybe a resistor. Either your motor is bad, or the the transistor is shorted or both

Of course the color is important. By convention red is power, black is ground, the third wire is the tacho. But double check by reading the schematic. A good place to start is to look at the transistor that's mounted on the motor assembly. It should be obvious which wire is which even if the wire color is different.

I saw these things in MOMA in NYC years ago. I only learned through this thread that they were designed to be used in addition to Bevox 5000 speakers. This is interesting because this must have been one of the earliest "satellite" systems. Note that they are omni direction and cube shaped; surely this must have been an inspiration for Bose's

Jeff: get the 9000 manual from this site. There are 3 wires to the motor. 1) ground. 2) power (+12V? I don't remember) 3) tacho (it provides speed pulses) Measure the voltage across power and ground (refer to service manual for test points). You may only get the voltage reading for a few seconds and it may shut off. The reason is it expects feedback

Thanks Martin. So just use a commercially pressed CD and adjust for 400mV per the service manual? Derek

Marc: My 9500 (similar Phillips cd mech) as well as all of my other players plays these CDRs just fine so its not likely the media. How do you fine tune the focus offset on the philips radial mech? Derek

Jeff: 2 places to check.... motor driver circuitry and drive transistor on actual motor. These motors can also be dead. I've had to replace mine due to bad brushes. Most likely bad motor. You can order new motor from B&O for about $40 bucks. Derek

Dillen: Is there any way to adjust laser current on the CD players with the Philips radial mechs without using the Test CDs? I replaced the 47 uF cap on a BC2500. It plays pressed CDs fine but has trouble with CDRs. Sometimes the audio distorts slightly, other times it plays fine and then just stop mid way. Dig Bogner suggested in an earlier post better

Sverre: To my knowledge the B&O control electronics is specific to B&O (the PCB on the mech). I tried swapping the board with a non B&O mech and it did not work. If the mech from Germany is cheap, you can gamble on it. Perhaps you can swap optical unit over if it doesn't work. Or you can order just the optical pick up from pinvan.com

Jay: How "handy" are you? Restringing the door mechanism is not a walk in the park. Changing the belt is easier but still requires taking a few things apart. Look up some of my previous posts on this topic. The service manual is also online here and shows a diagram on how this can be done. If you have minimal experience repairing mechanical