hey there. found a 19" Logix monitor the other day, with vga cable cut.
when i plugged it in to see if it even worked, it displayed a no signal
input screen, so good start, i thought! decided to remove the cable
entirely from the tube and mainboard, so i could splice it with another
spare vga cable.

2 hours later, my mutant cable was done, but on plugging it back in,
and attaching to a laptop, nothing but a gray glow appeared on screen.
im pretty sure i didnt touch anything else, so could my dodgy cable
splicing have killed the monitor? i taped every wire in electrical
tape, and was pretty careful doing it.

i get the feeling its nothing to do with the cable, but at the same
time dont understand why its not displaying the no signal input screen.
i even unplugged the cable from the tube/mainboard again, but still
displays nothing but the glow.

ideas?

Is the cable hooked up correctly? If don't wire it right the monitor
might lose its mind or put the computer signal in the wrong place. The
glow is the CRT running without anything to display. A TV is similar in
those black screens between commericials - Studios tape is blank -
nothing on it. so the tv has nothing to show. As for the monitor check
you hooked up the cable right.

but it should display the no input signal screen when i unplug the
cable from the tube/board, right? currently, it doesnt. im guessing its
a short somewhere, i will have a look into that, but then it still
doesnt display anything when everythings plugged in, and hooked up to a
pc. weird.

Who knows? maybe you burned something out when (and if) you connected
the cable wrong. This has been known to happen. Video card sends
signal, signal goes to wrong place do to improperly attached wire and
(depending on content, say it was a +12V trigger for the monitor) went
to the MPU (Microproc unit) or other chip or component and cooked it.
Could also be a solder joint that is cold.