Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
What if I just change the width capacitor? Would it be a bad idea, if the coil is not working right?
Which cap should I look for?
I don't know if you need this or it helps.......I just checked a couple of my U2000 chassis' width coils.....the part number on them is #9A2970-002.
Edward
A coil causing to much width? Location L701
i dought it..
if its adjusted wrong it will make picture to wide
now c724 and or d708
will cause to much width.
it will check shorted if its shorted.
Some parts to check,just put some electrical
tape around coil to hold in place just enough to get around it
and hold it together.then check these other parts.
isn't that the part # for the pincushion coil?
L703
isn't that the part # for the pincushion coil?
L703
Oops, you're correct.....just doubled checked the game again.....It had two stickers on it (i didnt catch it the first time I looked). Looks like the one peeled off the pincoushion coil, and someone stuck it onto the width coil.
Sorry for the confusion!
Edward
I have one that spontaneously lost all width control and it's maxed out. is this the problem you have?
I have zero width adjustment. I can never remember the parts locations, but I replaced the 3rd transistor and the one you have to add a heatsink to on the edge and it didn't make a difference.
it's also a 27" U2000, the 220 uf cap was replaced with a 10/50 BP, and that made no difference either. (I only recently got bipolars from Mouser to replace that)
the neckboard mods are undocumented. they'll vary. the good U5000 I have has a few caps added.
B+ is measured at TP202, which is in the middle of the deflection board near the B+ adjustment pot. contrary to what KLOV is passing these days it should be between 117-118V. there's a likelihood you won't be able to bust the epoxy off without destroying the pot, so I encourage you get new B+ and shutdown pots. I measure the ohm values on the old ones and set the new ones to the same values just as a baseline.
caps alone should get your B+ where it needs to be though I would think.