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#1
02-10-2022, 03:50 PM
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Monochrome Computer CRT Brightness
I have an old 80s Canon green phosphorus monitor that wouldn't display an image. I have been unable to find a SM, but I dove in anyway.
Today I hooked it up and adjusted the contrast and brightness to max, but no image. I then advanced the sub bright control inside the unit and at max it produces a nice bright and focused image. I am sure this is not how it is supposed to be, so I am wondering what I should be looking into. I measured the G2 at 634VDC and the G1 at -1.83VDC. If I back off the sub bright pot, or the front panel control, the G2 stays the same and the G1 increases. I believe this is how it works, but I know I shouldn't have to max all controls to get an image. Any suggestions as to where I should be looking? The only screen controls I could find is the sub bright and focus. All other pots are for H size, V size, H lin and V hold. No other pots. Thanks
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Pioneer SX-1080, Pioneer PL-115D, Pioneer CT-F9191, Pioneer RG-1, Wollensak 8050A, Akai 4000DS MkII, Pioneer CS-05 & Polk 1.2TL Denon 5803A, Pioneer DVL-700, Pioneer CT-W603RS, Toshiba HD-A3, D-Link DSM-520, Dish VIP-722, Polk 1.2TL, CSi5, LS/fx, RT-800 and PSW-650 
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