That's what you get for doing such a clean job of desoldering. If you did a crappy job you never would have put the old one back in. Russ Hoyt Hoyt's TV Exeter, NH ----- 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 > > > > > > -------- > > -- > > > ------------------------------------------------------------------------ > ----- > Lost Password: > http://www.tech-assist.org and select "Login Problems?". > Email Archives: > //www.freelists.org/archives/techassist/ > > > -------------------------------------------------------------------------- --- > Lost Password: > http://www.tech-assist.org and select "Login Problems?". > Email Archives: > //www.freelists.org/archives/techassist/ > ----------------------------------------------------------------------------- Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/