Let me clarify.
I was referring to tvcollectors 1981 Hitachi with a shading problem.
The problem is so common I will go over it for those with less experience.
This is an ALMOST ALWAYS tutorial.
All solid state sets use 200 V to run the 3 color outputs.
The 200V comes from
1) a secondary flyback winding ( most common)
2) OR not commonly off the primary & is stacked off the 130V.
there are 2 caps involved in this case.
Symptoms are any or all of the following.
To bright
Jail bars
Brighter on left than right
Retrace lines.
Streaking
Poor color
HV shut down ( from too much beam current)
How to find the cap.
Find the 3 color outputs, usually on the CRT board.
Each has a 1 or 2 watt resistor ( 18K + or - ) off the collectors.
The other ends join together, thats the 200V.
Follow the wire from that point back to the chassis.
You will find the cap at the cathode of a diode.
Sometimes there is a coil or low value resistor in series with
everything.
Of course if you cant find it post the model & chassis & one
of us will look it up.
BTW some sets cam in with another problem but just didnt
look right. It was this cap just starting to go. I always loved this
problem, a gravy job that put steaks on the table & beer in
the frig
73 Zeno
