My Radius IntelliColor Display/20e starts up green, but with a strong green that suggests having the brightness turned up way too high. The green is like a overall very strong wash, pretty much unusable since it's so intense. During these periods, the focus is also out. After a period of time it reverts to normal and is a lovely sharp monitor. That period of time seems to be lengthening.
Sometimes, after a while, the green seems to go away, but the over-wash and poor focus remains. Then still later the image goes back to good.
At a guess, the microcontroller that handles the settings is having some difficulty and the monitor is starting up with some settings in their unbiased state. Perhaps its (the microcontroller's) 5v (?) supply has gone wonky--possibly expiring electrolytic caps? Or maybe the memory element that stores the settings (Flash, EEPROM?) has reached the end of its life with too many cycles?
Anyway, I'm handy with soldering tools from axial caps all the way down to
208 pin quad flat packs. What I'm not any good at is diagnostics.I think that this monitor has an equivalent Sony model, but I'm not certain. It's definitely a trinitron. I can just make out the two horizontal lines at 1/3 intervals.
I hope that someone is familiar with this problem and can point me at the likely culprit in terms of component(s) that need replacing.
Thank you for any helpful or humorous suggestions,
Jeff