|Zenith of my Career
Joined: 16 May 2009
|Posted: Tue Apr 20, 2010 6:15 pm Post subject: Zenith SR3547RK Arcing from transformer
|Hi all, back for some more help. Thanks again for the last repair tips.
I have a new interesting problem with my Zenith SR3547RK (a CRT built Aug 95 in Juarez, Mexico).
The TV has been working fine, but started to make a loud snapping sound every so often (with no apparent user input). It was just an occasional pop, like loud static, so it didn't bother me much.
But recently, it began snapping more often, and now does it every few seconds for a while after startup. When I pulled the rear cover, I was surprised to see a huge arc jumping a near half-inch gap between what I guess is a transformer, and a nearby aluminum bracket. This transformer-looking device holds the heavy gauge wire that runs to the top of the CRT. The arc jumps from the base of the wire connection, like a bad plug wire on an old smallblock Chevy.
My kids thought the spark was really cool, but I'm not so enthused. Any idea what I might be dealing with here? I looked for any bare wires or toasted components, but I don't see anything out of place. The picture is still fine, although it gets a bit weak when the arcing happens.
Maybe the connection to the tube is getting weak? I believe it was reconnected some years ago by a repair tech with a big glob of goo.
Anyway, I would like to get some more miles out of this thing and appreciate any advice.