grease.htmĪnd to be clear, here in this thread, I am talking about DIELECTRIC grease, *not* conductive types.
Here's a link which seems to cover most of the arguments. Or who just have an axe to grind.īut dielectric grease on the carbon element and wiper can *vastly* increase the smoothness of operation for most carbon sliders. And online you never know the skill and common sense level of everyone who might read your words. I don't generally share what I'm about to say, because it tends to raise hackles. "Clean" isn't enough if their surface is rough, all you've done is a waste of time, as they will quickly wear more. Need to see the bottom of the wiper -the actual contacts- to see if they're pitted or scratched. It looks like there is a worn groove in the metal wiper track. If the plastic block isn't sliding freely and smoothly in the housing by itself, then it's safe to assume it won't get better once the other parts are in place. Correct anything felt at that level before proceeding. You can check the wiper alone in the housing to see how it slides. And if the pots need work, the KBD is usuallly in need also. Double duty here since your cat likely has a P-R KBD. We can discuss when-if it comes to that.ĭow Corning's DC7 -as used for Pratt-Read KBD bushings- is an excellent 'grease' for pots. If the wipers are already shot, and the resistance elements deeply scored as a result, that changes some things. Compare the original side by side with the one you are tapering, and adjust the value of the tapering resistor to best match the original pot taper.īut I'd bet if you do all the steps listed, the originals may be fine and last another forty years. But if you do this, don't just guess or use the common 1/10th 'rule'. You may be able to use tapering resistors to turn linear 1M sliders into the needed audio response type. The carbon wears the wiper too, and if not polished as part of a refurb, the nicks and cuts it has can will quickly abrade the carbon more, as well as continuing the wiper's demise.ĭid you lube *all* the places where sliding happens?
If you want details, you need to provide details.ĭid you polish the *wiper* contact points? Inspect it under magnification? What do all the parts look like after your work?
0 kommentar(er)
