vertical lines in a Toshiba TV

[vol.2]

Originally Posted by zeno

If that hoz drive is the source it must be coming from somewhere &
getting passed along. Its a classic ring that refreshes every line.
A few things....
If you cut open a jungle IC you see its a PKG of many IC's. Each usually
has its own GND & VCC pins.
I would also look at the blanking circuit. I have seen resistors in Sharp
& others cause this. Go up in value.
Mr squirrel give good advice, If you give him some peanuts & sunflower
i am sure he will help you further !
When I get ambition I will pull the Sams so I can see everything at once

73 Zeno
LFOD !

Thanks for the advice Zeno.

If you cut open a jungle IC you see its a PKG of many IC's. Each usually
has its own GND & VCC pins.

Are you saying I should look at the supply voltage to those chips, or suspect the ICs?

Just for reference, I have already tried replacing the jungle IC and the main video processor IC and neither had any effect whatsoever. I have extras of both.

I replaced the resistors in the area of the board that got burned. That entails R227, R497, R413, R414. There are several other resistors in that area, but they all checked out in value. I only replaced the stuff that was off, and they were all low by significantly more than 20%, I think there's a design flaw in the circuit probably for that area to get so hot.

R416 also got replaced as it was quite off, but it's not in the immediate area that looked burned.

I would also look at the blanking circuit. I have seen resistors in Sharp
& others cause this. Go up in value.

Not totally sure which those would be. I guess maybe I didn't mess with the blanking circuit?