Unit plays, but the stylus is picking up rumble from the motor.
Direct-drive unit; all's quiet until the stylus lands on the record.
It's quite pronounced if listening through headphones. Tried using an
isolation mat & playing w/ the platter mat upside-down; no dice. Is it
possible that I may need to re-lube the motor? Other ideas?

On 21.09.13 5:52, Madness wrote:
Unit plays, but the stylus is picking up rumble from the motor.
Direct-drive unit; all's quiet until the stylus lands on the record.
It's quite pronounced if listening through headphones. Tried using an
isolation mat& playing w/ the platter mat upside-down; no dice. Is it
possible that I may need to re-lube the motor? Other ideas?

Filter the input to the drive coils of the motor, or even
make circuitry to supply sine-waves to the coils.
That should reduce motor-rumble quite a bit.

Unit plays, but the stylus is picking up rumble from the motor.
Direct-drive unit; all's quiet until the stylus lands on the record.
It's quite pronounced if listening through headphones. Tried using an
isolation mat & playing w/ the platter mat upside-down; no dice. Is it
possible that I may need to re-lube the motor? Other ideas?

I saw some commentary re a PS-LX510 with rumble problems, that
suggested that the lubrication (oil or grease) in the bearing might
have become sticky with age. The recommended solution is to wash the
old lubricant out of the bearing with a suitable solvent, and
relubricate.

Is the motor on this model suspended from a subchassis using some
rubber grommets or standoffs? If so, these have probably dried out
with age, and are no longer acting as shock and vibration isolators
and dampers. The motor may need to be dismounted, and then remounted
with new grommets or O-rings or whatever.

"Madness = ****wit "

Unit plays, but the stylus is picking up rumble from the motor.
Direct-drive unit; all's quiet until the stylus lands on the record. It's
quite pronounced if listening through headphones. Tried using an isolation
mat & playing w/ the platter mat upside-down; no dice. Is it possible that
I may need to re-lube the motor? Other ideas?



** Errrrrrrrrrrrrrrrrrr......

Stop pulling your tiny dick and but a ****ing CD player.

Wot a PITA boring TROLL




..... Phil