Is it worth taking a 1984 gm radio apart to clean volume tuning knobs? read.905.ew

21trumpets wrote:

They can be cleaned, sort of.
But not with a water base substance.
Since you cannot get into the pot without
nearly destroying it, just spray lighter fluid into
the pot itself and move the control back and forth.
Odds are the carbon strip has worn away and a new pot is needed.

The only coil resistor (pot) that I know of may be the
one for the dash dimmer.
They disappeared when solid state pulsed
dimming circuits became universal about 1990.

I don't remember the tuning control in that radio anymore.
Ny 1992 GM was using a pot to change to voltage of an
LC oscillator but I don't know when they started that.

On 8/28/2012 11:14 PM, 21trumpets wrote:

Do NOT do that with your radio! You'll ruin it. They make spray cleaner
for controls, available from electronics suppliers. However, if the
control is really bad, even cleaning it may not be successful: the
resistance element is thin, and could easily be worn completely away.



--
I'm never going to grow up.

Thanks, I try the spray cleaner method.

On 8/28/2012 10:14 PM, 21trumpets wrote:

Don't use anything but a proper cleaner or it will soon be just the way
it was or permanently ruined.

The best cleaner/preservative is made by Caig laboratory. Its called
ProGold. IT will run you 15/20 bucks for a small can


spray it into the pot openings with the radio apart, then work the
control back and forth for a minute or so.


bob