koolmoecraig Posted August 10, 2020 Share Posted August 10, 2020 I just picked up a SC1224 monitor. Image comes on screen quickly but I am getting no red. Thoughts? Internal adjustment? Simple fix? Thanks for the help. Haven't messed with a real ST set up since 1987. Quote Link to comment Share on other sites More sharing options...
ParanoidLittleMan Posted August 10, 2020 Share Posted August 10, 2020 It can be even cable error, or rarer case - Atari ST error, so should check cable first - Red line. Swapping with some other color will give answer about is error in ST. If it's monitor error it can be harder to fix, and may need some equipment, experience. Quote Link to comment Share on other sites More sharing options...
koolmoecraig Posted August 11, 2020 Author Share Posted August 11, 2020 Thanks for the help. Jiggled the cord where it goes into the ST and got red! Definitely seems like a cracked solder joint or something. I'll have to open it up and have a look. Going to wait to compile some upgrades before I open it though. Quote Link to comment Share on other sites More sharing options...
npturton Posted August 31, 2020 Share Posted August 31, 2020 Check red gun diode is not open circuit on firing circuit Quote Link to comment Share on other sites More sharing options...
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