"DemoDisk" wrote in message
...

"Ray" wrote in message
...
Putting both of those symptoms together, I'd say the servicer may
have
forgotten to plug the degaussing coil back into the motherboard.

Ray

Thanks for your answer, Ray.

Two questions, please. Are degaussing coils supposed to behave like that
(i.e, "Bonk," and the image shaking like that?) And did you mean that
plugging in the degaussing coil would eliminate the blue shadowing? I'd
do
it myself if I could avoid hauling it back to the shop again, but I'm no
technician.

JPM



Yes that's exactly what they're supposed to do.

And yes it should solve the purity error you're seeing. The problem should
be pretty obvious, the coil is usually wound over with black electrical tape
and goes around the bell of the CRT, plugs into the board with a 2 prong
connector.