Date   : Wed, 21 Jul 2004 20:07:27 +0100
From   : Sprow <info@...>
Subject: Re: Squeaky CUB monitor

In article <000501c45c56$37d3d970$5deb07c3@...>,
   John & Helen Simpson <john@...> wrote:
> My CUB monitor, which was working fine until today, has started to make
> a nasty-sounding squeaky buzzing noise. It does this when I switch it
> on, and no picture appears except for a small white bit at the top
> right.
>
> The noise is very odd - it sounds a bit like someone playing a kazoo. It
> certainly sounds bad!
>
> Is there anything I can do to fix this, bearing in mind the dangerous
> voltages inside?

This could be any number of faults, but the particular problem you describe 
(dot in top right corner) doesn't tally with any of the numerous cub repairs
I've done.

Suggest you 
 a) turn off, leave to stand for a day, remove the main chassis and
    desolder/clean/resolder all of the joints associated with the vertically
    oriented high wattage white fusable resistors
 b) try turning on with the degauss coil unplugged incase the PTC is dieing
 c) get a new one off ebay

Sprow.