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, and also left a fan
blowing on the components all night with the cover off.

The red stanby/on light still glows when in the "off" mode, but when I
press the power button, nothing lights up or works of course, but I
can hear what sounds like a relay toward the front left side, but
that's it,

I cannot find where they put the fuses, as inside with the cover off,
there's a sticker that says to be sure to replace the fuse with the
same type as supplied. I know usually the fuses are usually on the
back of cabinet on most stereos, where you unscrew it, but I don't see
anything there, and nothing inside with the top cover removed. so
where should I look? I do not know how to repair besides changing the
fuse.

Does this model even have a fuse or is it completely toasted? Again,
some power is getting thru to make the stanby light glow, and a relay
click. Thanks much.

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

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

"dke3591" wrote in message
oups.com...
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, and also left a fan
blowing on the components all night with the cover off.

The red stanby/on light still glows when in the "off" mode, but when I
press the power button, nothing lights up or works of course, but I
can hear what sounds like a relay toward the front left side, but
that's it,

I cannot find where they put the fuses, as inside with the cover off,
there's a sticker that says to be sure to replace the fuse with the
same type as supplied. I know usually the fuses are usually on the
back of cabinet on most stereos, where you unscrew it, but I don't see
anything there, and nothing inside with the top cover removed. so
where should I look? I do not know how to repair besides changing the
fuse.

Does this model even have a fuse or is it completely toasted? Again,
some power is getting thru to make the stanby light glow, and a relay
click. Thanks much.


If there are PCBs mounted on the main ( as opposed to the standby ) power
transformer, fuses may well be located on the undersides of those boards.
There are often 5mm holes in the PCB above such fuse locations, so that you
can see the state of the wire in the fuse, without having to remove it, whch
can sometimes be a very fiddly task. It has been very rare indeed to find
any fuses on the rear panels of ordinary domestic hifi rigs for 20 years or
more.

Arfa