View Single Post
  #1   Report Post  
Posted to sci.electronics.repair
xamman xamman is offline
external usenet poster
 
Posts: 7
Default crt socket spark gap arcing

Hi! my philips 28" tv which was giving erratic picture and making a
buzzing sparking sound.
from usenet posts & faq, found the noise was coming from the crt
socket.
i carefully opened the crt socket & cleaned contact which clamp on the
input wire.this socket had a spark gap built in with 2 metal
hemispheres. on 1 side of the spark gap i noticed a tiny glob of metal
which fell off on cleaning.
TV is now working. No more sparking noise! but the picture is slightly
less focused - it is hard to read tiny text (like satellite channel
info) on the screen. & there is a very faint narrow almost horizontal
line every inch over the entire screen.

what cause the socket failure?
what is causing this line?
did i need to re set the focus after cleaning the socket?

Many thanks
X