Hi guys,
I know I've seen a similar problem on here somewhere, but... just been playing around with a Nad C540 player which seems to be having a problem spinning the disk. I've replaced the laser (Sanyo SFP101) and when you press play, the drawer closes, laser tracks, but disk does not spin.
I checked the motor was ok (with a battery) so when the drawer closed and laser came up, I gave the disk a little helping hand and spun it with my finger. And up came the TOC!
So I'm guessing the problem is either with the motor, or the power to the motor? Would I be right? Any help would be appreciated.
Regards.
I know I've seen a similar problem on here somewhere, but... just been playing around with a Nad C540 player which seems to be having a problem spinning the disk. I've replaced the laser (Sanyo SFP101) and when you press play, the drawer closes, laser tracks, but disk does not spin.
I checked the motor was ok (with a battery) so when the drawer closed and laser came up, I gave the disk a little helping hand and spun it with my finger. And up came the TOC!
So I'm guessing the problem is either with the motor, or the power to the motor? Would I be right? Any help would be appreciated.
Regards.
Make sure that the vertical placement of the mechanism is not obstructing the spindle-motor free spinning. In other words, make sure that the 4 springs are properly seated around rubber "distancers" and the screws are fully tightened.
I can tell that you eventually got TOC, but I'll ask anyway: did you remove the static-protective solder blob from the laser pick - up? (you probably did…. didn’t you?)
Good luck
Boky
I can tell that you eventually got TOC, but I'll ask anyway: did you remove the static-protective solder blob from the laser pick - up? (you probably did…. didn’t you?)
Good luck
Boky
Sounds very likely that you just need to spray a bit of silicone-based spray lubricant into the bottom end of the platter motor.
If the motor keeps spinning after you start it with your finger, then I'd guess one phase of the motor driver chip is blown. Replace the chip. (I'm assuming the spindle motor is a brushless DC motor)
If it is a brushed motor (typically a tiny mabuchi thingy, only 2-wire connection), then the commutator may simply be dirty/worn. Since the typical runnng voltage is only a volt or so, maybe 3v to start, they can get quite 'sticky' with age. Pushing to start it robably just gets it to a cleaner segment.
The easy fix is usually just to de-solder the two wires to the motor, and 'buzz' it on 9v each way for s few soconds. Lubricate, replace wires, try again.
The easy fix is usually just to de-solder the two wires to the motor, and 'buzz' it on 9v each way for s few soconds. Lubricate, replace wires, try again.
- Status
- Not open for further replies.