[TechAssist] Re: fix: RCA Proscan PS35123, CTC169EJ5 slight video smear to right?]]

  • From: peggs <peggs@xxxxxxxxxxxxx>
  • To: techassist@xxxxxxxxxxxxx, techassist@xxxxxxxxxxxxx
  • Date: Tue, 17 Feb 2004 14:42:23 -0800

How about soldering with the unit plugged in....not realizing it
until you go to 'plug it up'........ breaking out in a cold sweat..........
only to find the good Lord was watching over you and no
damage was done......whew......!!!

Peggs

At 10:16 AM 2/17/04, Doug Keller wrote:
>Almost as bad as unplugging all the connections from the board,
>disconnecting high voltage, getting everything ready to pull the board
>out, then discovering that you never unplugged it from the wall!! *laughs*
>
>Doug Keller
>Wis-Kel Electronics
>101 Freeland Ave.
>Terra Alta, WV
>USA        26764
>dek@xxxxxxxxxxxxxx
>http://www.tech-assist.org
>"Learn from the mistakes of others, because you
>won't live long enough to make them all yourself"
>
>
>
>Phil Bader wrote:
>
> >Well, I really wrestled with my pride on posting this one message.
> >Here it goes.
> >Yesterday while troubleshooting this set, between my back ache and the
> >never
> >ending phone calls and walk ins (I'm alone),
> >When I carefully unsoldered the defective thermal video switch IC, U1401
> >(161079/HCF4052B/NTE4052B), set it aside, opened  the new part bag,
> >answered the
> >phone.... returned, and RE-INSTALLED the defective IC right back into
> >the set.
> >I kept cooling this "new" IC and the smear would clear. Finally I found
> >the replacement
> >next to the set still in the foam,clean pins and all.
> >Gad, I feel stupid.
> >Well thanks, group, for all the help  offered.
> >The fix for the smear was a thermal IC U1401 video switch.
> >Very Stupidly Yours,
> >Phil
> >
> >
> >
> >>Philip Bader
> >>Jan Phyl TV Inc. (estab. 1976)
> >>3420 Recker Hwy. Winter Haven, Fl. 33880
> >>Fax (863) 299-8821
> >>email: tjanphyl@xxxxxxxxxxxxxxx
> >>
> >>
> >
> >
> >Phil Bader wrote:
> >
> >
> >
> >>I did check out that site.. Ziltch..
> >>It was suggested a bad CRT, 200 volt scan-derived electrolytic cap to crt
> >>board weak,etc.
> >>This cannot be the case, as I get good picture with no smear in line-in
> >>video mode both with the RCA inputs and S-video. Those parts would be 
> common
> >>to all video and tuner inputs.
> >>I have since changed the integrated tuner assy, the video switch IC U1401
> >>(HCF4052B) and all 'lytics surrounding that IC. If I freeze spray around
> >>that IC, it clears! (And I've changed it with a new one.) and chemically
> >>cleaned the board)
> >>So it cannot be anything that shares the same circuitry as the RCA and
> >>S-video does, because they're OK.
> >>Only with tuner input... And as it stays on 10 minutes and more, it gets
> >>worse. I also notice the contrast is not as good in tuner mode either. That
> >>seems to go hand in hand with this smear thing.
> >>I'm stumped.
> >>Hey, RCA experts!
> >>Help!.
> >>
> >>
> >>Glen Rhea wrote:
> >>
> >>
> >>
> >>>Phil
> >>>You should check the history files re: ctc169 at www.wa6ati.com
> >>>Glen
> >>>
> >>>Phil Bader <tjanphyl@xxxxxxxxxxxxxxx> wrote:
> >>>After restoring the vertical (prev. post) I notice a good picture but
> >>>there is definately a video smear to the right of everything, more
> >>>noticable with text, of course. I lowered the sharpness and almost gone.
> >>>
> >>>Any histories on video smear with the CTC169's?
> >>>Phil Bader
> >>>
> >>>--
> >>>
> >>>Philip Bader
> >>>Jan Phyl TV Inc. (estab. 1976)
> >>>3420 Recker Hwy. Winter Haven, Fl. 33880
> >>>Fax (863) 299-8821
> >>>email: tjanphyl@xxxxxxxxxxxxxxx
> >>>
> >>>--------
> >>>
> >>>
> >
> >--
> >
> >
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