On Apr 10, 10:41 pm, "simple minds fan"
wrote:
I have an old pro502 monitor it has served me well for several years
now, but recently the picture is too narrow about 50%, sometimes it is
ok but then it wobbles and goes narrow ( horizontal )

I opened it up and blew lots of dust away, one capacitor seems far
more dusty than the rest maybe it's blown ?

Anyone have any ideas or links to a service manual ?

scientists have yet to establish any link between quantity of dust and
capacitor failure. check for dry joints in the scan area.