"NN" wrote in message
oups.com...
I got this sony pvm-8220 from a thrift shop and it was only black and
white when setup. There are two set of RGB adjustments in the back
that is easily accessible. But any adjustments results in either a
red, blue or green picture. (red and white, or blue and white and
etc.)

You shouldn't have touched those adjustments, they are irrelevent to your
problem. Did you mark them so you can return them to their original
settings?

Neither the tint or color knobs have any affects either while
the others work. I don,t know if this is a simple issue or complex
enough to end up in a thrift shop. That would be a start for me.



Look around the chroma processing circuitry. However, unless you are
familiar with the operation of chroma processing circuitry, you won't get
anywhere. You could check for dry joints, but that's about it I'm afraid.
Don't be tempted to start fiddling with settings, there is a fault which
needs repairing, and misaligning settings in the hope of sorting it out will
add to your problems.

If it's any help, I've known the crystals and trimmers in the chroma circuit
go bad in certain Sonys.

Dave