28 Sep
2001
28 Sep
'01
12:47 p.m.
See the photos of the Commodore Educator 64, Model 4064
at
http://www.swtpc.com/commodor.htm . I remember the general position of the
power transformer is similar to the Pets. Note the shielding of the
transformer in the photos. This was used to prevent the problem which you
are describing, and if this shielding is removed the wobble will occur. Try
placing a shaded pole motor or large transformer anywhere near the sides or
back of a modern monitor and you'll see the same wobbling effect.
When did the PETs start using all the shielding? My 2001-16N
has none of the shielding your Educator64 shows. Transformer,
mainboard and even the keyboard are all bare. While looking at the
shielding, I powered mine up for the first time since I moved about a
year ago and now it's screen shape is distorted and it shows evenly
spaced vertical bars all the way across.
Jeff
--
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