Rattanee
New member
So yeah... the time has come to deal with one of these again...
It came as working, but was doing the hula -really- bad.
Closer inspection after getting it:
Neckboard looks funny... remove neckboard, find plastic 'key' around the pins smashed to bits, with all the pins standing this way and that, one pin wasn't even making contact...
So... have a few of these pulled off from tubes I had to toss... while trying to put it on and straighten the pins, suddenly heard a quiet crack.... glass cracked.... thought I got away with it when I heard no noises, but at the smallest touch it began air intake... so... tube ---> hillside....
Lucky I had a spare tube from an U5000 that I got without a chassis. I bolted that in, and hooked it up. (Oddly enough the vertical yoke readings didn't match... I think there was a 6 ohm or so difference...)
Power on: monitor fires up
-doing the hula like mad
-colours are pretty much a -mess-, bias and cutoff and whatnot varies randomly, touching the pots at -all- gives disastrous results....
-picture occasionally fades out to black, then comes back. The filament voltage comes and goes as when it's black the neck glow goes aswell
-Vertical position doesn't adjust all the way, At it's lowest setting when the picture's top reaches the top of the tube, there's still an inch of blackness left at the bottom...
HULA:
Replaced C115 with a used one (don't have same rating on hand), which changed nothing... might try snagging a brand new one once stores open tomorrow...
What else is there that could cause this?
COLOURS:... yeah... need to replace all the pots.... anyone know a source for the style of pots wg used, or am I stuck using generic trimmers?
FADING:
I really truely hate WG schematics.... can anyone point me where the filament return goes to after it arrives back to the mainboard via cn201pin12 ? The rest I have looked through, pretty sure this is going to be a bad solder joint...
VERTICAL pos:
Anything common that causes this? Otherwise I guess I'll just have to start metering out the whole vertical section....
Thanks for the help folks
It came as working, but was doing the hula -really- bad.
Closer inspection after getting it:
Neckboard looks funny... remove neckboard, find plastic 'key' around the pins smashed to bits, with all the pins standing this way and that, one pin wasn't even making contact...
So... have a few of these pulled off from tubes I had to toss... while trying to put it on and straighten the pins, suddenly heard a quiet crack.... glass cracked.... thought I got away with it when I heard no noises, but at the smallest touch it began air intake... so... tube ---> hillside....
Lucky I had a spare tube from an U5000 that I got without a chassis. I bolted that in, and hooked it up. (Oddly enough the vertical yoke readings didn't match... I think there was a 6 ohm or so difference...)
Power on: monitor fires up
-doing the hula like mad
-colours are pretty much a -mess-, bias and cutoff and whatnot varies randomly, touching the pots at -all- gives disastrous results....
-picture occasionally fades out to black, then comes back. The filament voltage comes and goes as when it's black the neck glow goes aswell
-Vertical position doesn't adjust all the way, At it's lowest setting when the picture's top reaches the top of the tube, there's still an inch of blackness left at the bottom...
HULA:
Replaced C115 with a used one (don't have same rating on hand), which changed nothing... might try snagging a brand new one once stores open tomorrow...
What else is there that could cause this?
COLOURS:... yeah... need to replace all the pots.... anyone know a source for the style of pots wg used, or am I stuck using generic trimmers?
FADING:
I really truely hate WG schematics.... can anyone point me where the filament return goes to after it arrives back to the mainboard via cn201pin12 ? The rest I have looked through, pretty sure this is going to be a bad solder joint...
VERTICAL pos:
Anything common that causes this? Otherwise I guess I'll just have to start metering out the whole vertical section....
Thanks for the help folks