Oscilloscope Unaohm G4018

[jkaltne1]

Hello There!

Has someone Service Manual for above mentioned oscilloscope and send
me in PDF file (or similar).
Schematic diagram will also help.
Actually, I cannot adjust anymore "focus" and also "intensity" - became not
adjustable. Instead sharp line on the screen I have "smear" line...

Regards, Josip

 

[Michael A. Terrell]

jkaltne1 wrote:

Hello There!

Has someone Service Manual for above mentioned oscilloscope and send
me in PDF file (or similar).
Schematic diagram will also help.
Actually, I cannot adjust anymore "focus" and also "intensity" - became not
adjustable. Instead sharp line on the screen I have "smear" line...

Check the resistors in the path of those controls. They go up in
resistance and cause that problem. If they are OK, the CRT may be
failing.


--
http://improve-usenet.org/index.html

Goggle Groups, and Web TV users must request to be white listed, or I
will not see your messages.

If you have broadband, your ISP may have a NNTP news server included in
your account: http://www.usenettools.net/ISP.htm