----- Original Message -----
From: Jay Sario
To: TekScopes@yahoogroups.com
Sent: Thursday, December 27, 2007 12:28 AM
Subject: [TekScopes] TEK 2235 no good focus


> hi to all,

> Would like to ask help from anybody. I recently got a used TEK-2235, I
> cant get a clear focus on the screen even if I rotate the "focus" 
> knob, its always blurred. Hope anybody can share where I would check
> or what part to check...thank you and merry xmas to all.


Having a 2235 myself, I had found and  saved this note from another newsgroup:

>Between the hv multiplier (has CRT anode lead coming out of it) and the 
>focus pot are two 1/2w resistors,510k ohm.Then behind the focus pot are 
>four more 1/2w res,all lined up neatly in a row,also 510k ohms. These go bad frequently.
>Use carbon COMPOSITION type as replacements. The old ones change 
>value,usually increasing in value.

Good luck!  Adriano