CBM8032 - wobbly screen (The saga continues)

From: Adrian Vickers <avickers_at_solutionengineers.com>
Date: Sat Oct 6 20:07:40 2001

At 21:36 06/10/2001, you wrote:

> > 1st attempt: "build" some shielding out of aluminium foil to go around the
> > transformer. Which I did - all rough & ready stuff, with just a bit of
>Aluminium won't do a darn thing about 50Hz magnetic fields. You want
>something like mild steel, or better still mu-metal (if you can get it at
>a sensible price, or indeed, at all).

Okay, that makes sense. I *should* be able to get hold of some of this
"mu-metal" stuff - I know people at an electicity/electronics R&D lab.... :)

> > Clearly, therefore, the wobble is induced by the monitor. There must be a
> ^^^^^^^
>transformer, surely...

Ahem. Yes... Typing to quickly for my brain again, I'm afraid.

>Now, if half of that goes open-circut (dead diode, bad connection, etc)
>the machine will most likely still work, but the stray field from the
>transformer will increase. It's worth checking this...

I will have a poke around with my multimeter tomorrow...

Cheers, Ade.
Be where it's at, B-Racing!
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