DIYbanter - View Single Post - Zenith 25" color TV SM2568S CRT board color adjustments

On 27 Sep 2004 05:44:16 -0700, (Jacques
Carrier) wrote:

Gretings from Montreal to all fellow techs,

I fixed the vertical problem on this nice 25" 1994 color TV (bad solders).
I would like to know how to properly adjust the 3 potentiometers
located on the CRT board.I did not find any grey scale pots ??
Maybe the CRT is getting old ......The colors are not crisp enough
and there is a light green hue.
If you have a service manual please get in touch with me.

Many thanks for your help,

Jacques

Those 3 pots on the CRT board are for grey scale. They adjust the red
green and blue bias. There are no drive controls on that set. Being
a 1994 Zenith you probably won't be able to get a good picture. Those
sets have CRT which go weak within a couple of years.
Andy Cuffe