Has to be something to do with drugs. *laughs* Doug D Thunhurst wrote: > > That is my point exactly!!! > This set belongs to an elderly couple. They claim it was never worked on > since they had it (so they say). There was no evidence this set had been > tampered with. The dust in the set showed no signs of being disturbed. If > the set did come in with the 750 ohm resistor, then I guess there really are > little gremlins out there that work at night while the shop is closed and > leave no tell tale signs of doing it. I am a one man shop so there isn't > anyone else that could have swapped out this resistor without me knowing it. > But of course, being in this business could cause one to loose their mind, > I guess. > Daryl > Daryl's TV > 3310 Dyer St. > El Paso, TX 79930 > 915-565-9184 > 915-564-1024 Fax > http://dynacomp.freeyellow.com > -----Original Message----- > From: HSWAD@xxxxxxx <HSWAD@xxxxxxx> > To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx> > Date: Monday, October 21, 2002 5:44 PM > Subject: [TechAssist] Re: FIX...CTC203, no start-up > > >Hold it!!!! Something wrong here---If the set had the wrong resistor how > did > >it ever work when it was purchased new??????? Hollis Bates, field > >engineer-retired In a message dated 10/21/02 7:27:18 PM Eastern > >Daylight Time, dthunhurst@xxxxxxx writes: > > > > > >> > >> > >> > >> > >> Thanks to all that replied to me on this dog. The cure was r14109. It > >> aparently came from the factory with a 150k resistor and it should have > >> been > >> 750 ohm resistor. The set did not show any signs that this resistor was > >> tampered with by someone. > >> I guess r14103 must have been giving some problems at assembly and the > >> factory must have used a select resistor in that circuit to make it > >> functional. That is the best assumtion I can come up with. Hard to > belive > >> this set worked for a couple of years like that. Perhaps this is one > >> reason > >> the chassis number in the set was different that what was labled on the > >> back. > >> I hate DOGS like that one because you are looking for something defective > >> rather that a wrong part. > >> Tomorrow I say good-bye to this one and hope I don't see it again for a > >> mighty long time. > >> Again, thanks to everyone for the valuable help. > >> Daryl > >> Daryl's TV > >> 3310 Dyer St. > >> El Paso, TX 79930 > >> 915-565-9184 > >> 915-564-1024 Fax > >> http://dynacomp.freeyellow.com > >> > >> ---------- Original Message ---------------------------------- > >> From: "miglinasj" <miglinasj@xxxxxxxxx> > >> Reply-To: techassist@xxxxxxxxxxxxx > >> Date: Fri, 18 Oct 2002 18:23:08 -0500 > >> > >> > > >> > Hello Daryl, > >> > > >> > Partsfinder lists R14109 as 750 ohm on both CTC203CE1 or CTC203CX > >> modules. > >> >Maybe this is your problem. If it isn't, could it be possible that > R14103 > >> >that you replaced is opening up under a load? I would change this again > >> and > >> >hard wire the resistor to its next connection to sure. > >> > > >> > Jonas > >> > Miglinas TV > >> >----- Original Message ----- > >> >From: "D Thunhurst" <dthunhurst@xxxxxxx> > >> >To: "techassist" <techassist@xxxxxxxxxxxxx> > >> >Sent: Friday, October 18, 2002 5:12 PM > >> >Subject: [TechAssist] UPDATE-CTC203, DEAD- No start up > >> > > >> > > >> >> > >> >> Update on this CTC203 set. > >> >> I am still having the same problem with this dog. > >> >> There is no start-up and no secondary voltages at all from the SMPS. > >> >> I have replaced, using OEM parts, the following: > >> >> r14103 1 meg (this was the first thing I found to be bad) > >> >> As recommended, I replaced.... > >> >> q14101 244223 > >> >> q14102 147665 > >> >> q14103 232218 > >> >> u14101 223653 > >> >> u14102 231525 > >> >> The other parts recommended to check where found to be good. > >> >> r14109 was mentioned to be 750 ohms but I found a 150k in its place > and > >> it > >> >> does check good. It doesn't appear to have been tampered with, so I > >> think > >> >> it is original. > >> >> It has been also suggested to change out the "Gemstar" module. This > set > >> >> doesn't have it. > >> >> I also have disconnected the collector of the HOT to see if sound is > >> >> returned. No help there. The power supply to the HOT is still zero. > >> >> At plug-in, I get a faint chirp that diminishes in volume for about > two > >> >> seconds. > >> >> I have checked with a fine tooth comb, so to speak, for the > possibility > >> of > >> >a > >> >> fine crack in the board as well as for poor connections.....None > found. > >> >> At the bottom of this post is the original post on this set. > >> >> Perhaps someone has some additional ideas to try or possibly a scan of > >> the > >> >> power supply would be a help. > >> >> Again, thanks, > >> >> Daryl > >> >> PS > >> >> The customer's patience is wearing a bit thin as I have had this set > for > >> >> awhile (awaiting parts, etc.) > >> >> > >> >> Daryl's TV > >> >> 3310 Dyer St. > >> >> El Paso, TX 79930 > >> >> 915-565-9184 > >> >> 915-564-1024 Fax > >> >> http://dynacomp.freeyellow.com > >> >> > >> >> -----Original Message----- > >> >> From: Wayne Vanaman <Wayne@xxxxxxxxxxxxxxxxxxxxx> > >> >> To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx> > >> >> Date: Thursday, September 26, 2002 3:08 PM > >> >> Subject: [TechAssist] Re: CTC203, DEAD- No start up > >> >> > >> >> > >> >> > > >> >> >Don't cheat on the parts. If transistor q14101 OR q14102 OR q14103 > OR > >> >> >q14108 are bad replace all of them together > >> >> > > >> >> >r14107 244214 43ohms > >> >> >r14109 179317 1/4w 750ohms 5% > >> >> >r14108 244215 .1ohm 3W > >> >> >q14101 244223 > >> >> >q14102 147665 > >> >> >q14103 232218 > >> >> >q14106 215495 smd, maybe bad > >> >> >q14107 215495 smd, maybe bad > >> >> >q14108 215496 > >> >> >u14101 223653 > >> >> >u14102 231525 > >> >> > > >> >> >The failure was probably caused by u14102. This is a precision > >> reference > >> >> >IC. Although the opto-isolator is probably good for the buck it > costs > >> it > >> >> >isn't worth the gamble. Also, very carefully check all of the pins > on > >> >the > >> >> >switchmode transformer, ensuring that the traces are good. > >> >> > > >> >> >This power supply needs about 80vac to run. It is a frequency > >> modulated > >> >> >regulator. > >> >> > > >> >> >Wayne Vanaman > >> >> >Omega Electronics > >> >> >6904 W Fairfield Dr > >> >> >Pensacola, Fl. 32506-3310 > >> >> > > >> >> >850-456-5995 voice > >> >> >850-458-6369 fax > >> >> > > >> >> >Mailto:Wayne@xxxxxxxxxxxxxxxxxxxxx > >> >> >WWW.PensacolaTVRepair.Com > >> >> > > >> >> > > >> >> >----- Original Message ----- > >> >> >From: "D Thunhurst" <dthunhurst@xxxxxxx> > >> >> >To: "techassist" <techassist@xxxxxxxxxxxxx> > >> >> >Sent: Thursday, September 26, 2002 2:50 PM > >> >> >Subject: [TechAssist] CTC203, DEAD- No start up > >> >> > > >> >> > > >> >> >> > >> >> >> Hi, > >> >> >> I have a 36" RCA, F36665, chassis CTC203CE1 marked on the board and > >> >> >CTC203CX > >> >> >> marked on the back. > >> >> >> I am quite sure it is a start up problem as there are no secondary > >> >> >voltages > >> >> >> at all. I do have 165 volts raw B+ to the drain of Q14101. I > >> >originally > >> >> >> could start the set by placing my meter on the gate of Q14101 and I > >> >would > >> >> >> get a small chirp of the power supply starting up. I then could > turn > >> >the > >> >> >> set on and everything worked until turned off. I checked > everything > >> in > >> >> >the > >> >> >> gate circuit of Q14101 and found R14103 (1 meg) wide open. I > >> replaced > >> >> the > >> >> >> resistor and now I can not get it to turn on at all. At plug in, I > >> get > >> >a > >> >> >> faint diminishing chirp out of the power supply with 2.6 volts on > the > >> >> >gate, > >> >> >> 165 on the drain, and 0 on the source. Naturally I am not getting > my > >> >140 > >> >> >> volts or 5 volts, etc. I re-checked the components in the chopper > >> >> circuit > >> >> >> and found nothing else bad. > >> >> >> Any ideas? > >> >> >> Thanks, > >> >> >> Daryl > >> >> >> Daryl's TV > >> >> >> 3310 Dyer St. > >> >> >> El Paso, TX 79930 > >> >> >> 915-565-9184 > >> >> >> 915-564-1024 Fax > >> >> >> http://dynacomp.freeyellow.com > >> > >> > >> ------------------------------------------ > >> To REMOVE your email address, click here: > >> http://www.tech-assist.org/unsubb.html > >> To CHANGE your email address, click here: > >> http://www.techassist.net/forms/change.html > >> ------------------------------------------ > >> ***NEW*** Tips Added Instantly!!!*** > >> Submit Repair Tips here: > >> http://www.tech-assist.org/secure/tip/ > > > > > > > >------------------------------------------ > >To REMOVE your email address, click here: > > http://www.tech-assist.org/unsubb.html > >To CHANGE your email address, click here: > > http://www.techassist.net/forms/change.html > >------------------------------------------ > >***NEW*** Tips Added Instantly!!!*** > >Submit Repair Tips here: > >http://www.tech-assist.org/secure/tip/ > > > > ------------------------------------------ > To REMOVE your email address, click here: > http://www.tech-assist.org/unsubb.html > To CHANGE your email address, click here: > http://www.techassist.net/forms/change.html > ------------------------------------------ > ***NEW*** Tips Added Instantly!!!*** > Submit Repair Tips here: > http://www.tech-assist.org/secure/tip/ -- Doug Keller "Learn from the mistakes of others, Wis-Kel Electronics because you won't live long enough 101 Freeland Ave. to make them all yourself" Terra Alta, WV USA 26764 dek@xxxxxxxxxx ------------------------------------------ To REMOVE your email address, click here: http://www.tech-assist.org/unsubb.html To CHANGE your email address, click here: http://www.techassist.net/forms/change.html ------------------------------------------ ***NEW*** Tips Added Instantly!!!*** Submit Repair Tips here: http://www.tech-assist.org/secure/tip/