[sdiy] Yamaha Volume Pedal Part 2.

[Colin Hinz]

On Tue, 7 Aug 2007, Lewis Bupp wrote:

> My plan is to first clean the board and then re-solder some of the 
> connections, replacing the output jacks. Can you guys suggest a product that 
> will cut thru all of the gunk on the board without causing anymore damage? Is 
> it worth it to repair or am I just P*##ING out someones drink? LOL!

Years ago I salvaged an amplifier that had suffered a similar fate.
Evidently the spill occurred when the amplifier was powered up, as all
the output transistors were blown. About $8 at the local distributor
took care of that.....

I can't remember what I used to clean the circuit board but it was
pretty benign stuff -- either isopropyl alcohol or aerosol flux remover.
More likely the former. It didn't take a whole lot of effort, either.
Immersing the board in isopropyl for a while may or may not eat any of
the plastic parts, but what've you got to lose?

I recently revived a (modern, expensive!) laptop which suffered an
incursion of tea, which had an adverse effect on the DC input circuitry.
Luckily, a motorised toothbrush + isopropyl did the trick!

Just remember to wait until all the fluids evaporate before applying
power, though.....

- Colin Hinz
   Toronto, Canada