Eeyore wrote:


dke3591 wrote:


Hi,

I have a JVC AX-R551 stereo amplifier, and last night, a half can of
beer found it's way into the cabinet, mostly toward the rear left
where the extra power outlets are, and I assume a transformer. The
music just cut out, and I tried immediately to get as much as the
liquid out immediately.

I tried a hair dryer to help dry things out,


Oh dear....

That'll just make all the sugary gunk congeal wherever it ended up..

Graham

I'll reply in the 'hypothetical' -- your risks are your own. If it
were _my_ amp, I would immediately disassemble it to reveal the
chassis, take it into a bathtub, and using a sprayer hose and head
with the hottest water possible, spray all the disassembled components
from every angle, sprinkle a quality liquid dishwashing detergent (good
degreasing and wetting properties) over all surfaces, and repeat the
high pressure hot spray until suds run clear. I would remove the amp to a
dry, preferably sunny spot and use compressed air or the 'cool'
setting on a hair drier to extract as much water as possible. If
using compressed air, I would be careful to regulate its application
to avoid detaching labels and sensitive parts. Then I would bake it
(in the sun if you are in a summer climate or using applied hot air
if not) for at least five hours. I would let it sit for several more
days in a dry, well ventilated place and then I would begin to troubleshoot
it under power.

I routinely clean electronic equipment; one always needs to carefully
evaluate where in a device water could collect and not be removable without
disassembly -- membrane keyboards are a good example; they need to
be disassembled to clean and dry the various layers or they will corrode
or become unreliable after being wet. Be careful of power and output transformers;
moisture can compromise insulation and they can fail under power unless fully
dried (baked). Moisture can short mica insulators on semiconductors and with
fine pitch smt it can be disastrous if not fully removed.

Good luck.

Michael


parts of the chassis