Skip to main content
Blues Harmonica logo

User Account

Username:*
Password:*
Forgot Your Password?

Visitor Menu

  • Sign Up
  • Sample Lesson #1
  • Sample Lesson #2
  • Student Recordings
  • Forums
Forums :: Ask Amp Tech Expert Skip Simmons

"Scratchy" Pots

1 reply [Last post]
Sun, 08/05/2012 - 16:44
TheKrowe
TheKrowe's picture
Offline
Joined: 05/20/2012

The pots on my '73 Princeton Reverb have gotten "scratchy". Can they be cleaned up without removing them from the chassis? Contact cleaner spray or something like that?

Thanks!

Top
Wed, 08/08/2012 - 14:42
#1
Expert Skip Simmons
Expert Skip Simmons's picture
Offline
Joined: 01/18/2010
Cleaning pots

Hellowe Krowe- Cleaning pots is no problem. You should not remove the pots from the chassis or un-solder any leads, but you DO need to remove the amp chassis from the cabinet so that you can actually see the pots. On a modern printed-circuitboard amp this can be difficult, but not on your 73 Fender!

Just squirt a little of your favorite electronic cleaner in the small opening at the base of the solder terminals and rotate the pot. While you are at it, remove each knob so that you can tighten the nut that holds the pot to the chassis. And since I'm lecturing, tighten those nuts that hold the input and speaker jacks to the chassis!!

If it's still noisy, you may have to replace it.

Skip

Top

Sign me up!

Full access to all lessons starts at $20/month! (with annual subscription)

Subscribe

Free Sample Lessons

After watching the BluesHarmonica.com overview video, try one of the lessons below to experience a lesson at BluesHarmonica.com.

  • Tongue Blocking Study 2 – This study is for the newer player or the player new to tongue blocking
  • Bending Study 5 – This is for the advanced player looking to improve their bending skills

Contributors

  • Aki Kumar
  • Joe Tartaglia
  • Gary Smith
  • Mark Hummel
  • Joe Filisko

Site Links

  • About David Barrett
  • Accredited Instructors
  • Links
  • Terms and Conditions
  • Contact Us
Hohner
© 2009 - 2025 David Barrett and the Harmonica Masterclass Co. for Bluesharmonica.com