Just wondering if anyone is familiar with the CDM2 mech from Philips.
This player sounds really good (Mission PCM4000), has no problems playing, however, its noisy. As the disc is spinning there is a rubbing/friction kind of noise coming from the transport mech. May even call it grinding? I have stripped this mech down to nothing, cleaned every part, lubed the motor spindle, the disc clamp, and its still making noise.
Anyone have any other ideas?
This player sounds really good (Mission PCM4000), has no problems playing, however, its noisy. As the disc is spinning there is a rubbing/friction kind of noise coming from the transport mech. May even call it grinding? I have stripped this mech down to nothing, cleaned every part, lubed the motor spindle, the disc clamp, and its still making noise.
Anyone have any other ideas?
Tic tic tic ... perfectly normal. Laser servo in action. If there are pots on the board tweak them 1mm to each side. Don't touch the laser head pots. If it does seek / jump accurately between tracks leave it alone.
Its not ticking at all, its a loud rubbing sound, certainly not normal. It can be heard clearly from the listening position at all times except it does get quieter as disc rotation slows down (usually starts quieting down about half way through playing a disc, then remains quieter until disc play stops)
Check if the spindle is too low and the lens or head or even the tray is touching the disc.
Try without the head lens protection. Is it correctly snapped in ? Check also the anti- vibration rubbers & springs as it affects height. Check the disc clamp also. You can actually remove the tray & the clamp, put the CD on the spindle & then put the round clamp on it since it holds as it's magnetic. You have to cheat the tray microswitches.
Try without the head lens protection. Is it correctly snapped in ? Check also the anti- vibration rubbers & springs as it affects height. Check the disc clamp also. You can actually remove the tray & the clamp, put the CD on the spindle & then put the round clamp on it since it holds as it's magnetic. You have to cheat the tray microswitches.
I have removed the disc clamp and played it without, and checked that it is not rubbing the tray, all is good there, plenty of clearance all around. I have also checked anti-vibration rubber and springs, all is good there too.
I didn't check the laser head as I would have expected to see markings on the disc if it were hitting. Do you think it could rub the disc without leaving marks on it? I don't really want to pop that off unless I really have to.
I didn't check the laser head as I would have expected to see markings on the disc if it were hitting. Do you think it could rub the disc without leaving marks on it? I don't really want to pop that off unless I really have to.
So after much playing since yesterday, I have come to the conclusion that your original comment is probably correct. Although I have no clue how a laser can make this sort of noise ... when I pause it, it clicks and the rubbing noise gets a bit louder.
I know there is no rubbing on the disc anywhere as yesterday i raised the spindle about 1/2 mm .. and the noise was still present.
I looked for the pots you had mentioned to adjust, and although I have seen them in all other CD players, I cannot find them in this one. There is only one pot on the servo board, and its an odd looking one that requires a hex to adjust it. Maybe its just pooched and I will have to replace it.