Main > Monitor/Video Forum
No red in picture?
bloodyviking77:
I discharged the tube, disconnected neckboard and chassis and removed from my cab (to try out a new vga monitor I got - that didn't work - another story >:()
When I re-installed the tube and reconnected the neckboard, it seemed pretty "tight" and I had to wiggle it quite a bit to get it sitting "right". When I fired up the tube again, it seems to have lost all red colour. The picture is fine otherwise, but has a distinctly blue/green cast.
Twiddling the blue/green drive pots on the neckboard will change the degree of blueness or greenness, but twiddling the red pot has zero effect.
I fear I may have cracked a trace or broken a connection on the neckboard while wiggling it back on to the tube. See pic attached - looks to me like this might have happened before?
Anyone have any suggestions on where to start checking?
Ken Layton:
Yep, that neckboard has been broken before. :o
I can see where jumper wires have been tack soldered over some breaks.
bloodyviking77:
Thanks Ken, thought so!!
so i guess i just check all the connections and re-solder where broken? Should I remove the cr**py looking solder and start again?
Ken Layton:
It wouldn't hurt to resolder.
bloodyviking77:
I've re-soldered the old repairs and gone over the whole neckboard and can't seem to locate any other breaks. I have checked using a multimeter and have continuity between all points I have tested.
However, on hooking her back up, picture is as before - I still get no red!!
Anything I should check in particular? Caps?
I'm pretty much a newb at this - I'd sure appreciate a few pointers!