2 Dec
2013
2 Dec
'13
10:08 p.m.
So, I'm sure Tony will be all over me for swapping
stuff before measuring
stuff but in this case, it panned out pretty well :-)
Would I???
One of my _old_ books on TV repair says that. faced with a blank screen,
novices often suspect the CRT. And that while, if the screen is blank, it
is unlikely there are any votlages present that would damage a
replacement CRT, swappign a CRT takes al ot of tiem, and it's best to get
out of that habit :-)
As I said in my first message, I think I would have measured all the CRT
electrode votlages first. The ones on the base pins are under 1kV, so a
noraml multimeter will do. The EHT is goign to be 12-15kV, so you need a
special EHT probe or meter.
If the votlags ahd been normal, I might have tired turning up the
'screen' (first anode) preset to see if I could coax a bit more emission
out of the CRT.
-tony