[TechAssist] Re: Sony PTV model KP41T15
- From: "Damon" <damon101@xxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 13 Apr 2005 20:58:07 -0500
I think I've seen the same thing....the +- 15V supplies generally indicate
the output IC is actually an operational amplifier and those rarely fail
from my experience. Since the Jungle IC generates the vertical sawtooth,
I'll bet that signal is missing.
I can't recall if the board layout is.....the jungle is on one board and the
vertical output is on another, like on the convergence amp board, but if it
is.....there is a plug labeled V drive that I connect the scope to for
verification of drive signal. I've seen the same V drive connection on
various chassis from Sony.
Damon Brunger
Telrad Electronics
Fort Wayne IN
----- Original Message -----
From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, April 13, 2005 1:03 PM
Subject: [TechAssist] Re: Sony PTV model KP41T15
> Jungle IC?????
>
> Bob Waterman, CET® #RI-28
> Master Technician License #9109
> Service Manager / Parts Manager
> Gemini Computer, TV, & Security Alarms
> (508)695-7302
> (508)695-7769 FAX
> geminitv@xxxxxxxxxxx
>
>
>
> ----- Original Message -----
> From: "Ernie - Valley TV & Stereo" <valleytv@xxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Wednesday, April 13, 2005 1:54 PM
> Subject: [TechAssist] Sony PTV model KP41T15
>
>
> > This set has 3 curved horiz. lines in center of screen (no
> vert.deflection)
> > until the set shuts down after 10 to 15 seconds
> > I replaced the convergence IC's a year and a half ago
> > The 15v + and 15v- voltages are OK and the 2 fuses are not blown
> > on the convergence board. I don't have the vert.OP IC in stock and
> > was wondering if this can be caused by the convergence IC's.
> > This is not a straight line, but separate blue, green & red lines
> > and they are curved
> > Has anybody seen this problem?
> > TIA
> > Ernie
> >
> > Ernie Niessen
> > Valley TV & Stereo
> > 9401 Fletcher St.
> > Chilliwack, B.C.
> > V2P 4Z4
> > Canada
> > Since 1960
> > valleytv@xxxxxxxxxxxx
>
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