Re: [Hampshire] LCD Monitor repair

2009/9/28 Matthew Daubney <matt@???>:
> On Mon, 2009-09-28 at 11:46 +0100, Philip Stubbs wrote:
>> A while ago, i bought a cheap LCD monitor. Except for the one dead
>> pixel, the picture is fine for my needs. The only problem is it makes
>> a noise. A really irritating high pitched whine. If I grip the case by
>> its sides, the noise goes away. Sometimes for a bit, sometimes it
>> comes back as I release it. It is one of those sounds that you don't
>> really know what is annoying you until you turn it off.
>>
>
> Ah, that horrible electrical screaming noise.
>
>> Now I should have returned it straight away, but feel I have left it
>> too long now. So I am thinking of opening it up and seeing if I can
>> fix it. My plan is to fill each gap and joint with a non-corrosive
>> silicone sealant to try and damp down any resonances in the case.
>
> I'd actually take a look at the connections in those areas. That noise
> is normally caused by something arcing across a joint. If the power
> joins the monitor at that point check that, I normally find the problem
> there.
>
>
>> Has anybody done anything like this? Are there any real gotcha's? If I
>> really screw it up, it will just mean that I can justify getting a
>> better monitor, so as I see it I can only win :-)
>
> I just tended to replace the monitors when this starts happening. I've
> always taken it as a bad omen. But YMMV as they say!
>
> -Matt Daubney

I did have one monitor which only made a noise when the brightness was
set to a particular value so it may be worth fiddling with settings
before electrocuting yourself (there are some high voltages in them
thar LCD panels!)

ATB, Peter