1986 Magnavox 20" convergence needed and maybe more.

[Hoodcom]

I have a Magnavox 20" TV that has the built in DBX speakers. Model: RH4350 WA01 and the chassis number: 20C9-01

And this set needs some convergence adjustment, especially at the top right corner and a little bit everywhere else. I'm going to be getting a physical copy of the service manual, but for now I got a PDF form to get me by.

This isn't something I've done before, so I feel a bit clueless when it comes to adjusting the yoke for the screen edges.

Here's a picture.

(Click for larger version.)

Also, there's two other things, and one I feel needs to be addressed before I even touch the convergence. Ever since I got this set, I never once heard the degaussing coil kick in, I thought it didn't have one until I pulled the back cover off earlier.

I always can hear these things kick in on computer monitors and other CRT sets, but certainly not this one. So looking at some of the schematics, I probed around and I'm not getting anything out of the thermistor. 120 volts is going into it but hardly a fraction of one volt's coming out of it. Anyone have any ideas? Most I've gathered is the SM says it's a 10.1 cold PTC.

Here's the thermistor.

(Click for larger version.)

Then lastly, I find the composite in to be touchy... like when I first power it up and run a game console or DVD player, the signal acts like it's not going through well or something, I have to unplug the cable from the DVD player or console and plug it back in. I don't have to touch the cable on the TV's input jack itself.

Plus if there isn't a clean RF signal being injected into the TV, I noticed the composite being effected a tiny bit.

I'm wondering if something may be up in the aux video amp circuit or something. I am thinking of checking things out there as well.


But other than that, the TV works wonderfully.