Greetings esteemed experts:
I have an AOC Spectrum 9Glr monitor, CRT. This may seem basic, but the image is quite dark, despite the fact that the brightness and the contrast are each at maximum. Is there any way I can make the image brighter so as to make reading easier?
You need to check why brightness is low, check heater voltage if OK the maybe FBT resistors have drifted in value assuming G2 is supplied by FBT.
The G2 control is the nearest to the PCB out of 3 on the FBT adjusting this should increase the brightness if it is supplied by the FBT.