View Single Post
  #477  
Old 01-25-2021, 01:02 PM
Yamamaya42's Avatar
Yamamaya42 Yamamaya42 is offline
VideoKarma Member
 
Join Date: Nov 2018
Location: Round Rock TX
Posts: 3,177
Well, I know it can do better, but I'm basically stuck in a position that I can do little about it due to lack of exp/ equipment.
Unless there is someone in the general area who has the equipment and knows how to align it, it will have to stay like it is.

I do plan to pull the chassis sometime to replace the 6meg focus resistor and 130pf cap, not that they are really failing now, but I'm sure that they are worn and could use replacing.
I have always wanted to look into to a retrace line problem this set has, where as all resistors on the color PBC have been replaced, the ones on the sweep PCB have not been, there is a 100k resistor on the sweep PCB that is old that I suspect to be out of tol, it's tied directly to the plate of the vert output tube and transformer, and thus being hit by very large vert pulses, it then goes to a .01 ceramic disc cap, (not suspect) , then a 68k resistor (new) , then to the plate of the video output tube, thus the source of vert blanking, I overlooked this last time I had it apart, and was looking mostly at horz blanking.

Step by step, I'll try to make this set work the best I can.
It has come a long way from a set that was in pieces, with it's non working color PCB hanging out by it's wires, cover to the IF section removed and lost, and most original screws gone then stuck in storage for many years!
__________________
=^-^=
Yasashii yoru ni hitori utau uta. Asu wa kimi to utaou. Yume no tsubasa ni notte.
いとおしい人のために
Reply With Quote