Follow up, I did get into this chassis again but had no luck. Luminance buffer Q2906(pnp) was OK. I changed any way. This was the emitter follower of the -Y buffer Q2911. Put set back together. Bruce. ----- Original Message ----- From: "Keith Trumbla" <keith@xxxxxxxxxxxxxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Thursday, March 25, 2004 6:03 PM Subject: [TechAssist] Re: RCA F27201GG (CTC 169CAQS) VERT DEFLECTION? > I had something like that a while back. The PNP emitter follower was shorted > causing the video to be driven when it was actually supposed to be blanked, > causing you to be able to see vertical collapse during initial power up and > degauss. > I am sorry, I don't remember the location but it's your luma driver/buffer > HTH > Keith Trumbla > BEMelectronics.com > Suite 212-530 Century St. > Winnipeg Canada > R3H 0Y4 > Ph.204.775.2875 Fax.204.774-9192 > ----- Original Message ----- > From: "Ed Gaidies" <teltek3@xxxxxxxxxxxx> > To: <techassist@xxxxxxxxxxxxx> > Sent: Thursday, March 25, 2004 3:36 PM > Subject: [TechAssist] Re: RCA F27201GG (CTC 169CAQS) VERT DEFLECTION? > > > > Pretty sure that's normal on those sets, vertical sweep is suppressed till > > degaussing has finished. Depending on your screen setting if and how much > > it's visible. > > > > -Ed- > > > > > > > > Tel-Tek Electronics > > Ontario-Canada > > > > teltek3@xxxxxxxxxxxx > > ----- Original Message ----- > > From: "Bruce Tiedeman" <btied@xxxxxxxxxxxx> > > To: <techassist@xxxxxxxxxxxxx> > > Sent: Thursday, March 25, 2004 2:01 PM > > Subject: [TechAssist] Re: RCA F27201GG (CTC 169CAQS) VERT DEFLECTION? > > > > > > > Al when the set is first turned on look at the screen and see if you see > a > > > faint vert (deflection) line about 1\4' high before the picture comes > in? > > > Did the customer send this back for this type of a problem? It does not > > > affect picture once it is on. > > > > > > Bruce. > > > ----- Original Message ----- > > > From: "al m" <ampm@xxxxxxx> > > > To: <techassist@xxxxxxxxxxxxx> > > > Sent: Thursday, March 25, 2004 1:07 PM > > > Subject: [TechAssist] Re: RCA F27201GG (CTC 169CAQS) VERT DEFLECTION? > > > > > > > > > > I got the same problem here. I haven't seen the problem yet. Customer > > says > > > > it only happens when they turn it on. Original problem was picture was > > > > stretched and the line when turned on. Caps in the vertical section > > fixed > > > > that. > > > > Went over the regulator and changed CR4118 and the thing went out. > Came > > > back > > > > 2 weeks later with this line thing??????? I thought I had it fixed > when > > > the > > > > picture came up OK. Never have seen the line. > > > > Al Marquardt > > > > ampm@xxxxxxx > > > > Al Marquardt Electronic Repair > > > > 206 W Main > > > > Girardville Pa. 17935 > > > > ----- Original Message ----- > > > > From: "Wayne Vanaman" <Wayne@xxxxxxxxxxxxxxxxxxxxx> > > > > To: <techassist@xxxxxxxxxxxxx> > > > > Sent: Thursday, March 25, 2004 12:17 PM > > > > Subject: [TechAssist] Re: RCA F27201GG (CTC 169CAQS) VERT DEFLECTION? > > > > > > > > > > > > > Normal operation. > > > > > Vertical is blanked during degauss. > > > > > If this is a "problem" turn the main screen down a lttle. > > > > > > > > > > Wayne Vanaman > > > > > Omega Electronics > > > > > 6904 W Fairfield Dr > > > > > Pensacola, Fl. 32506-3310 > > > > > > > > > > Wayne@xxxxxxxxxxxxxxxxxxxxx > > > > > WWW.PensacolaTVRepair.Com > > > > > > > > > > 850-456-5995 voice > > > > > 850-458-6369 fax > > > > > > > > > > > > > > > ----- Original Message ----- > > > > > From: "Bruce Tiedeman" <btied@xxxxxxxxxxxx> > > > > > To: <techassist@xxxxxxxxxxxxx> > > > > > Sent: Thursday, March 25, 2004 10:17 AM > > > > > Subject: [TechAssist] RCA F27201GG (CTC 169CAQS) VERT DEFLECTION? > > > > > > > > > > > > > > > > "Momentary no vert deflection then OK". At start up. > > > > > > I hope some one can shed some light on this problem, At turn on > you > > > see > > > > a > > > > > > collapsed vert deflection (about 1\4" deflection) then I hear the > > > relay > > > > > > click an the set comes on full deflection as the CRT heaters > lights > > up > > > > the > > > > > > tube. The regulation is good around 143 volts similar in standby. > > > > > > I did change the cr4118, Q4402 and Q4202. Soldered all board > > > connections > > > > > in > > > > > > Vet circuit. Replaced C403K. > > > > > > I am starting to go around in circles on this set. Trying to > figure > > > out > > > > > the > > > > > > theory of operation. I am working off of a CTC169 print but has > > > > different > > > > > > parts than shown in data base. U4501 the vert drive switch shows a > > > drive > > > > > > pulse OK at turn on. > > > > > > . Sorry if my explanation is vague. I also changed the degaussing > > > switch > > > > > > transistor! > > > > > > As soon as I hit the tack switch the vert line shows up, then the > > > relay > > > > > > sounds and the picture comes in ? > > > > > > I don't want to send out this set as is. The original condition > was > > > > > > regulator problem which has been repaired , then I noticed this. > > > Should > > > > > not > > > > > > see any kind of visible deflection this soon at turn on? > > > > > > > > > > > > Bruce. > > > > > > > > > > > > B&T Electronics > > > > > > 139 Margaret St > > > > > > Sarnia Ontario > > > > > > Canada > > > > > > N7T 2Y3 > > > > > > 519 344 1850 > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -------------------------------------------------------------------------- > > > > > --- > > > > > > 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/ > > > > > > > > > > > > > -------------------------------------------------------------------------- > > --- > > > 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/ ----------------------------------------------------------------------------- Lost Password: http://www.tech-assist.org and select "Login Problems?". 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