That's what I'm talking about and usually 13 or 14. Al Marquardt ampm@xxxxxxx Al Marquardt Electronic Repair 206 W Main Girardville Pa. 17935 ----- Original Message ----- From: "peggs" <peggs@xxxxxxxxxxxxx> To: <techassist@xxxxxxxxxxxxx>; <techassist@xxxxxxxxxxxxx> Sent: Wednesday, February 25, 2004 1:35 PM Subject: [TechAssist] Re: fix Re: GE 25GT522, CTC177AF2 powers up 3 times,dead. > I've seen settings between 10-20. > I think it varies chassis-to-chassis(not sure why,but...) > Anyway,I've noticed that the Setting for Parameter One(H. Oscillator) > is always the value before the Screen Angle shifts from angling to the > Right,to angling to the Left(the last to-the-Right setting). > IOW,when it shifts to the Left,step back One setting,to the Last > Right Angle Setting. > When I have had to align an EEProm,this setting is always easy. > > I've tried numerous times(stepping down one setting,out of curiousity) > when copying Parameter settings, before EEprom replacement. > Not once have I seen it different. > > Peggs > > At 06:29 AM 2/25/04, al m wrote: > >The horizontal setting is always 13 or 14 if that doesn't straighten it out > >you got another problem. > >Al Marquardt > >ampm@xxxxxxx > >Al Marquardt Electronic Repair > >206 W Main > >Girardville Pa. 17935 > >----- Original Message ----- > >From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx> > >To: <techassist@xxxxxxxxxxxxx> > >Sent: Wednesday, February 25, 2004 9:18 AM > >Subject: [TechAssist] Re: fix Re: GE 25GT522, CTC177AF2 powers up 3 > >times,dead. > > > > > > > I now understand in retrospect. > > > Remember I said with the new eeprom, the set came on, but the horizontal > >freq was off? (due to the incorrect value of the new eeprom's horiz freq > >setting) > > > Another words, "detuned". A detuned resonant circuit is less effecient, so > >with the horiz freq off, that affected the high voltage, lowering it, > >allowing it to stay on. As I brought it closer to correct frequency, the HV > >increased, until it exceeded the normal amount and triggered shutdown. > > > The open scan cap was allowing excess HV. My replacement eeprom with it's > >H. freq "off" just masked the actual problem. > > > Does this explain it better? > > > It threw me also for awhile. > > > Phil > > > > > > Paul wrote: > > > > > > > Phil, If the set stayed on after replacing the eeprom, why did C4402 > >need replacing? Did I miss something somewhere? If C4402 was the cause of > >the problem would it not still cause the same problem with a different > >eeprom? Are you saying the eeprom made up for an open timing cap? > >Paul > > > > Phil Bader <tjanphyl@xxxxxxxxxxxxxxx> wrote:I threw an eeprom > >in(slightly different ctc177 model) and the set stayed on...out > > > > of horiz. hold. I managed to enter the service menu and get to parameter > >one, H, > > > > freq. Just as I had it close the H. oscillator dropped out. > > > > I attached an external scan cap (just something out of my cap box, like > >a > > > > .001@2kv) and it fired up with good picture. > > > > This told me a timing scan cap somewhere was bad. > > > > I located C4402 ,a .0115mfd@1600V (RCA# 223177). It was open. > > > > Replaced C4402 as the fix > > > > . > > > > Philip Bader > > > > Jan Phyl TV Inc. (estab. 1976) > > > > 3420 Recker Hwy. Winter Haven, Fl. 33880 > > > > Fax (863) 299-8821 > > > > email: tjanphyl@xxxxxxxxxxxxxxx > > > > Phil > > > > > > > > peggs wrote: > > > > > > > > > throw an 8 pin socket in, and try a new EEProm > > > > > > > > > > Peggs > > > > > > > > > > At 10:37 AM 2/24/04, Phil Bader wrote: > > > > > >Plug it in, the SMPS has the usual chirp, and the HOT collector is at > > > > > >about +148 VDC in standby. Push power while monitoring the HV anode > >and > > > > > >it turns on, HV comes up to about 25KV, instantly clicks off, clicks > >on > > > > > >again in half second, off, then a third try, then dead. I didn't see > >a > > > > > >bad fly with HV coming up OK. > > > > > > I checked all diodes, found no shorts. > > > > > >Histories? > > > > > > > > > > > >Phil > > > > > > > > > > > >-- > > > > > > > > > > > >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/ > > > > > > > > Paul ,B > >Central TV&Video > >Grover Beach Ca. > > > > > > > > > > -------------------------------------------------------------------------- > >--- > > > > Lost Password: > > > > http://www.tech-assist.org and select "Login Problems?". > > > > Email Archives: > > > > //www.freelists.org/archives/techassist/ > > > > > > -- > > > > > > Philip Bader > > > Jan Phyl TV Inc. (estab. 1976) > > > 3420 Recker Hwy. 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