Tube question from a rookie - Videokarma.org TV - Video

Kevin Kuehn · #1 04-13-2018, 02:52 PM

Have you tried adjusting the vertical height and linearity controls? Otherwise have you replaced the paper and electrolytic capacitors in this TV?

Wind157 · #2 04-13-2018, 03:23 PM

I have not. Getting it to power on was was exciting. I suspect a capitor may be an issue related to the vertical. When it did power on there was a small, barely noticeable, amount of smoke coming from a component. From seeing the smoke to getting closer to look, it wasnt happening anymore.

Wind157 · #3 04-27-2018, 08:46 PM

Quote:

Originally Posted by Kevin Kuehn

Have you tried adjusting the vertical height and linearity controls? Otherwise have you replaced the paper and electrolytic capacitors in this TV?

I’ve done some adjusting, I either get a picture that takes up the whole screen but is faded and has fold over or I get a narrow picture with black section below

Robert Grant · #4 09-19-2018, 07:52 AM

It wouldn't surprise me if a foil/paper tubular cap in the vertical circuit shorted, causing overvoltage (ergo overcurrent) through the resistor.

Just a guess (Many other possibilities)

zeno · #5 09-23-2018, 09:03 AM

There is an electrolytic on the cathode of the vert output that
causes the bottom to pull up. Eventually the vert should be recapped
except for the discs. Also the 3 legged integrators changed.
Check all resistors especially high ohms ones. Do recapping
one at a time then test to be sure of no mistakes.
These will be of interest........

https://www.youtube.com/watch?v=vt7OLBCoR8o
https://www.youtube.com/watch?v=6lZIJQ-cKDs&t=141s

73 Zeno

LFOD !