[TechAssist] Re: PTK195 - Black Bar in Picture??
- From: "Danny Garris" <dgarris@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 02 Jul 2005 13:37:54 -0400
Thanks John! (Good tip)
... I heated the T-Chip and the "black" blanking bar grew wider and then the
entire screen was black, I cooled the T-chip and all returned to normal, so
I put back in all the original resistors I replaced and I replaced the
T-chip w/ new original.........All is playing on test bench fine so far!
I'll keep ya' posted if all plays fine for the next few hours!
Danny Garris
Garris Radio & TV
New Bern, NC
dgarris@xxxxxxxxxxx
>From: "John Conti" <contitv@xxxxxxxxxxx>
>Reply-To: techassist@xxxxxxxxxxxxx
>To: techassist@xxxxxxxxxxxxx
>Subject: [TechAssist] Re: PTK195 - Black Bar in Picture??
>Date: Fri, 01 Jul 2005 15:56:10 -0500
>
>Danny I had the same problem and had to replace U16201 the t-chip p/n
>241266
>also check the condition of r 14507
>
>John
>Conti, TV
> >From: "Danny Garris" <dgarris@xxxxxxxxxxx>
> >Reply-To: techassist@xxxxxxxxxxxxx
> >To: techassist@xxxxxxxxxxxxx
> >Subject: [TechAssist] PTK195 - Black Bar in Picture??
> >Date: Fri, 01 Jul 2005 16:21:40 -0400
> >
> >What: 52" Big Screen TV
> >Make: RCA
> >Model: P52820BL
> >Chassis: PTK195DB
> >
> >Problem: After 25 min warm-up the picture will have (1) "Black bar"
>appear
> >in the screen and slowing moves from bottom to center of picture. This
> >vertical (going from left to right) "black bar" is about 2-3" tall and
> >would
> >appear at the bottom of screen and slowly move up to the center of the
> >screen.
> >
> >Yesterday I looked up this type problem on my WINStips program and I
>found
> >a
> >tip that suggested replacing R14705 (1.0 ohm) (1/4 W) I replaced this
> >resistor and now after warm up I have (2) "black-bars" appear in the
> >picture
> >after warm up.
> >
> >Anyone seen this problem?
> >
> >Danny Garris
> >Garris Radio & TV
> >New Bern, NC
> >dgarris@xxxxxxxxxxx
> >
> >
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