The cleaning of an LP jacket

I use what the Sleeve City guy has recommended...the anti-bacterial wipes.
The name brand are the way to go as they have more of the chemical/s that provide better cleaning/disinfecting. I also use it on labels that are of the slick coating variety.. Any jacket or label that has a matte finish should be taken with caution regarding any cleaning method for obvious reasons. Believe me...an anti-bacterial agent is very welcome on old lp jackets...

..always squeeze out the excess first.

 I would check the switch first do you have an ohmmeter ? First open the unit up and unplug it. Then turn the switch to on And check for continuity across three different terminations leading from the power in to the motor.  I say this because I had 16.5 And my switch failed which VPI can replace very cheaply. Although I did sell Mine and bought a new audio desk ultrasound. However the VPI is built like a tank and can last many many years it just may have to do some minor repairs along the way.

I doubt that theo's suggestion of an ohmmeter will help at all!  ;^)

I used a lightly dampened paper towel or gum eraser in the past.  But I like the prospect of slaw's suggestion much better.

Of course it may make a difference between glossy printed covers VS matt paper, the latter being more easily damaged by moisture.

One positive I can recommend is for removing price stickers and labels.  If you do any electronics work you may have a heat gun.  That can work wonders (with low setting) on even very old, dried out labels.  A plastic edged scraper can then make pealing away the label much easier.  A hair dryer might work but I expect has a lower heat range.

But another issue is signatures or notes made with a ball-point pen.  Years ago there was an ink eradicator easily available but no longer.  That may not have been much more than bleach?  Any suggestions for this problem would also be appreciated.

Unless they've really messed up the cover, I like previous owners' notes. I have some from the 60s with gift notes which are great.