One RGB channel entirely absent from the picture.
4 repair logs
Sinclair — ZX Spectrum +2
Sinclair ZX Spectrum +2 (childhood computer) had dead memory chips and a colour issue from an unintentional solder bridge on the ULA. No thread of that repair exists unfortunately.
Sony — BVM-9045QD
Sony BVM-9045QD that arrived from Japan with an entire colour missing, the same broken neckboard solder joint that had plagued the PVM-14M4J. Full restoration followed: PSU, deflection board, colour board and anode cap all seen to.
Sony — PVM-9040
Three 9-inch Sony PVM-9040s that arrived from Japan with customs drama. Monitors were fine inside, bar a known colour issue fixed by replacing the trim pots (which fixes the black-and-white-only fault). Full restoration across all three followed.
Sony — PVM-14M4J
Sony PVM-14M4J Trinitron with the common retrace lines issue, arrived with one colour completely missing. I made a mistake along the way but got there in the end. Trash to treasure.