[TechAssist] Re: Magnavox Ch.25B800 Shuts Down
- From: "zeus" <zeus@xxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 5 Nov 2001 07:59:23 -0600
Try scoping the base of the Horiz out xsistor with the collector opened.
Just finished one like this.
I'll bet horix freq will vary drastically.
Fix was the resonator 503hz xtail. Orange in color. Heating and cooling
xtail proved it was the culpurt.
Just before shut down you could not see the freq drift. Only with a scope
could I find this one. (and help from another tech. Can't for the life of
me recall his mane right now I hope he does not take offense when he sees
this.)
Tom Sterling
Sterling Electronics
Camdenton, Mo. 65020
573-346-5285
mailto:zeus@xxxxxxxx
----- Original Message -----
From: <GOMDWIL@xxxxxxx>
To: <Techassist@xxxxxxxxxxxxx>
Sent: Sunday, November 04, 2001 6:49 PM
Subject: [TechAssist] Magnavox Ch.25B800 Shuts Down
>
> Hello Gang
> TV:Magnavox
> Mod.#:TS2574CIOI
> Ch.#25B800-7562
> I still have this dog on my back work bench. I have replaced
Vert.IC500,D409. I pulled and checked R420, R445,D445, ESRD Caps, tryed
unplugging yoke, lowered and or raised A/C input,unplugged CRT , Hv,
resoldered areas on chassis, but it still comes on with good picture and
sound for about 5-10 sec. click and shuts down. I monitored TP5=
+13.5V,TP6= -13.5V at turn on OK. I have done all that I know to do . Can
somebody tell me what I'm missing. This old dog don't to go home. Thanks for
any help.----GOW TV Service
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