6 Oct
2001
6 Oct
'01
1:20 p.m.
At 00:15 07/10/2001, Dick wrote:
What Michael says here makes a great deal of sense.
However, as I have a
number
of units which, like the Commodore box, have a transformer of considerable age
in their power supply located near the yoke of the CRT, yet have none of the
wobble described here, it seems to me that one could probably allow the
transformer in the Commodore unit to remain at least long enough to check for
some sort of disruption of the power supply to the sweep
circuits. Transformers
should last longer than this 20 years or so, while the capacitors have reached
their shelf-life limits, I think.
Yes, I'm still concerned about the capacitors. However, caps shouldn't
induce the wobble in one orientation, but not another.... So the
transformer is my current prime suspect.
Partly, I guess, this bias is because I'm quite
certain it will be a lot of
trouble replacing the original transformer, though a kit with appropriate
spec's
might be solution. In any case, one can check the power supply connections to
the CRT circuitry without leaving the house. This being Saturday, I'd say
Monday will be soon enough to go searching for a replacement transformer.
Monday will be soon enough for everything.... I'm with the Irish on this
one (when told of a Spanish word - Manyana (sp?) - meaning "as God wills
it", the Irishman pondered for a while then retorted "We have no word or
phrase which conveys such a sense of *urgency*...)
Anyway, I shall probably try sticking a sheet of iron or steel in there;
hopefully that will show an improvement. If so, I can try to get hold of
some of this mu-metal stuff, and give that a whirl. Then there's... (well,
see some of my other posts for the rapidly growing to-do list :)
Let's keep our fingers crossed ...
Indeed so!
Thanks again!
--
Cheers, Ade.
Be where it's at, B-Racing!
http://b-racing.co.uk