DIYbanter - View Single Post

wrote:
even when out of the PC-what could be the cause?

Hi...

You'll see a little (probably black) box very near to where
the telephone jacks are. Give itaa gentle tap or two with the
handle of a pocket screwdriver.

If this causes it to release the line, then the relay is
sticking. It may from then on continue to operate, or it
may stick again next time you use it.

Ken