Sam's Monitor Repair FAQ is here
http://repairfaq.ece.drexel.edu/sam/monfaq.htm

Wayne

On Sat, 06 Nov 2004 13:29:25 GMT, "Luca Gallo"
wrote:

Sorry, but I'm a beginner. How can I identify the relay?
And what's the PTC?
Thank you
"Jeroni Paul" ha scritto nel messaggio
...
Luca Gallo expuso:
I have a monitor 17 '' CRT.
When i use it for many hours I see that the image begins to tremble.
I have tried the function DEGAUASS but nothing has happened.
Now the problem is very important, because now the image begins to
tremble so strongly that I can't use my monitor because the imge
doesn't want to stay firm. This isn't safe to my eyes!
Can somebody halp me?
Have somebody an idea to resolve my problem?
Some body tells me that my monitor is demagnetize and that is
impossible rapair it.
Tanks and sorry for my imperferct English

It looks like the degaussing coils receive some power. If it has a relay
that activates them, check that the contacts are not welded together.
Otherwise check the PTC.