Circular magnetic effects are usually due to the degaussing circuit
malfunctioning or a power surge such as happens with a nearby lightning
strike. The former is very common on Panasonic sets, could be bad solder
connections at the degaussing thermistor or a bad thermistor.

If it is the latter problem, manual degaussing may be needed.

Leonard

"Max" wrote in message
...
Hi all,

Having a Panasonic television CT-27... with a color problem. There is a
kind of big circle on the screen and the color is not right around
thiscircle. King of purple and yellow.

It looks like a perfect circle so I'm assuming something in the tube
itself is bad. Shadow mask ? Problem with the Degauss ?

Any idea ?

Tks for you help...