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

  • From: Phil Bader <tjanphyl@xxxxxxxxxxxxxxx>
  • To: techassist@xxxxxxxxxxxxx
  • Date: Tue, 17 Feb 2004 15:45:31 -0500

I usually have a dental pick nearby I scratch "C" for customer on an IC  upon
removal. I might scratch "S" for shop on mine,assuming I have a half dozen
salvage ICs all over. Then I can determine which is which.
Not this time,tho..
Phil

J Silverman wrote:

> Since newparts look a lot like oldparts I mark the oldparts with a marking
> pen before I take them out. If its too small to mark I deform a lead or
> something so I can identify it.
> Jerry Silverman
> Greentron Inc
> 4 Newland Ave
> Greenville SC 29609
> 864 232 3889
> Fax 271 2080
> mailto:greentron@xxxxxxx
> ----- Original Message -----
> From: "David Lessard" <mr_fixit@xxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Tuesday, February 17, 2004 1:25 PM
> Subject: [TechAssist] Re: fix: RCA Proscan PS35123, CTC169EJ5 slight video
> smear to right?]]
>
> > As Pegg's would say...it was a brainfart. We've all been there. Just
> > recently I was working on a RCA tuner problem. I did the exact same
> > thing, replaced the bad chip with the same bad chip. Debugged for an
> > hour before I realized I had installed the bad chip (found the new chip
> > on the floor next to the bench). It took five minutes to install the
> > good chip and the problem went away. This only goes to show that we are
> > humans and not androids.
> >
> > David Lessard
> >
> > Alexandria Electronics
> > 50 Harrison Street
> > Alexandria, Ontario
> > K0C-1A0
> >
> > mr_fixit@xxxxxxxxxxxx
> >
> >
> > -----Original Message-----
> > From: techassist-bounce@xxxxxxxxxxxxx
> > [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Phil Bader
> > Sent: Tuesday, February 17, 2004 1:04 PM
> > To: techassist@xxxxxxxxxxxxx
> > Subject: [TechAssist] fix: RCA Proscan PS35123, CTC169EJ5 slight video
> > smear to right?]]
> >
> >
> >
> > 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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--

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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