It is currently Thu Oct 19, 2017 11:11 am




Post new topic Reply to topic  [ 3 posts ] 
 Cleaning a Sealed Potentiometer 
Author Message

Joined: Wed Sep 05, 2012 10:54 am
Posts: 20
Post Cleaning a Sealed Potentiometer
Hi all,
I'm currently trying to clean 8 sealed potentiometers (they're the "ModPot" type, square pots with plastic casing).
I've seen several suggestions in various places online, suggesting using a hot soldering iron to burn a hole through the plastic pot casing and then squirting anything from wd-40(?) to various other cleaners, combined with various oils.
Is there any one procedure/cleaner that is most recommended?

Thanks


Thu Sep 06, 2012 2:02 pm
Profile
User avatar

Joined: Sun Nov 09, 2008 2:49 pm
Posts: 724
Post Re: Cleaning a Sealed Potentiometer
If the potentiometer is sealed, it shouldn't have any residue, debris, or oxidization on the resistive element or wiper. If too much power went through the part it might have charred the element and a replacement is in order. Sometimes a DC shift can occur with the adjustment of a control and this can result in a brushing sort of sound which might lead you to believe the control was dirty.

Sometimes just repeatedly operating the control will help with dirty contacts. A tiny bit of isopropyl alcohol can help clear residue/debris from unsealed parts, combined with repeated operation to help clear the contact surfaces.

A www search for contact cleaners and preservers might reveal specialty products/advice.

_________________
Scott Lee
scott@paia.com


Fri Sep 07, 2012 9:42 am
Profile

Joined: Wed Sep 05, 2012 10:54 am
Posts: 20
Post Re: Cleaning a Sealed Potentiometer
Thank you! I will probably look into replacing these, as they are quite scratchy (they are probably 20 years old).


Fri Sep 07, 2012 10:13 am
Profile
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 


Who is online

Users browsing this forum: No registered users and 7 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © phpBB Group.
Theme designed by Vjacheslav Trushkin , adapted for PAIA by Illumimedia Design Studios
Not able to open ./cache/data_global.php