Jeff Liebermann wrote:
On Tue, 6 Aug 2013 19:49:09 +1000, "Phil Allison"
wrote:

Try some WD40 or similar spray lubricant - seriously bet it makes all the
switches work again.

That works, if you don't mind doing it again in about a month. The
residual oils left behind by WD-40 seems to turn to sticky gum. Try
it yourself. Spray some WD-40 on some glass and let it evaporate.
Check the oil after a few weeks of exposure to air. I used some
microscope slides with various contact cleaners. Only WD-40 became
sticky. Note that the "electrical contact cleaner" term was removed
from the WD-40 can at some times in the 1970's. The company also
introduced a product designed specifically for contact cleaning, which
contains NO oils:
http://www.wd40specialist.com/products/contact-cleaner/
If you want to break loose frozen controls, I have no problem using
WD-40. However, for contact cleaner, I use something else.


I have in my mind, a tv tuner on the WD-40 can. Am I right ?

My preferred general purpose spray is CRC 2-26 .
I know that says, improves electrical properties, and plastic safe.

I used to have a lot of problems with volume controls in the desert. Sand?
Also have a can of Blue Shower, with the dohickies in it. I never much used
it. I bought one of the last cans.

Greg