Contrast uncontrollable GE 10T1

[mattdavala]

Hi Everyone,

My 10T1 seems to have the contrast running at 100%. Its very annoying because it overloads the IF sections.

The contrast control works, well at least it varies resistance. It is supposed to be a 2 meg control, yet when I checked it with my ohmmeter it was reading around 150, possibly a meg and a half. Thats if I read it right. Would that cause my contrast be be full blast and unnafected when I turn the control?

I am unable to upload the contrast control part of the schematic due to it being 290KB. I can always email it to you.

Thank you,
Matthew D