[Test-Equipment] Tektronix T935A Scope - seized knobs

[Steve]

At 09:04 AM 7/23/2010, you wrote:
>Sometimes a light grease like
>Tuner-Lub will work on old pots but most were intended to
>run dry.

I discovered a long time ago that Asian slider pots don't like being 
sprayed with contact cleaner. While it may clear up a scratchy pot, 
it causes the plastic shaft to bind and catch in the slot, making it 
impossible to adjust the pot smoothly.

Steve, K0XP