[TechAssist] Re: RCA G32686LV CTC197CE2 Horiz. collapse FIX
- From: Larry E <videotech@xxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Fri, 29 Oct 2004 15:58:24 -0400
Jim, your a genius, never thought to Ohm out from the yoke back to the
collector, trace just off pin 1 of fly was burnt open but hidden by a
puddle of rosin, THANKS for your input, I probably would have
never found it, I guess we should check the simple things first, Larry E
Larry Eastman
American TV & Electronics
Crystal River, Fl. 34428
Jim Myers wrote:
> Sounds like the horiz yoke is open, not connected, or the circuit from
> the HOT collector to the yoke connector is open. This sounds simple but
> sometimes it's easy to overlook the obvious. With no horiz yoke it would
> be normal for the HOT collector pulse to be greatly reduced in amplitude
> and much wider and the base than normal.
> *******************************************************************************************************************
> Since 1972
> Jim Myers
> Telrad Electronics
> Fort Wayne, Indiana
>
> Larry E wrote:
> > Hi Guys, This 197 chassis is giving me fits, had the typical 3 clicks
> > then nothing,
> > replaced flyback kit (oem) now I have start up with audio but picture is
> > almost
> > totally collapsed horizontally, I have a 1/2" wide picture right in the
> > center of
> > the screen, If I let it run for 4-5 minutes it eats the HOT, figured I
> > got a bad
> > flyback so I ordered and installed another one, same symptom, I have
> > 165v
> > on C of HOT in standby, drops to 144v when turned on, scoped the C of
> > the HOT and I only have 625v p-p, waveform is normal but half what it`s
> > supposed to be, I`ve checked C14402,14716,14800,14805,14403. 14404,
> > CR14402,14800, all good, I can`t seem to find the problem, could I have
> > a
> > bad deflection IC?? (U16201), My VA-48 is broke so I can`t ring the yoke
> >
> > if anyone has seen this I could sure use the tip, tia, Larry E
> >
> > Larry Eastman
> > American TV & Electronics
> > Crystal River, Fl. 34428
> >
> >
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