Yes I have 5volts PtoP and collector and base of Q4402 on the money!! Bill Grabowski Triangle Appliance Kenosha, WI 53142 Wayne Vanaman wrote: > Bill: > > Any RCA (ok, most) with an autoprogram problem: Check H Sync going into > the micro. No H sync, no memory. Set defaults to "air", no channels > stored in memory, and channels can be tuned manually. Set can be put in > "cable", and channels can be tuned manually. > > Most brands of TVs autoprogram looking for that 3.58 burst. Most brands > store the "jammed" channels, because they have a 3.58 burst. > > Not RCA. RCA figures that if there is no H Sync you don't want to watch > it anyway, so who cares if it is in color. > > H Sync on micro U3101p 23 about 5V. It comes through a convoluted path. > The last active semi before the micro is SMD Q4402 pn 215495, a high > failure part number. 5.4V pulses on the emitter, 9vdc on the collector > 1.09vdc on the base. I guess about 5V pulses on the base, the schematic > doesn't say, the show 11V pulses then a 4700/5100 ohm voltage divider to > ground. > > Let us know if you have H Sync on the micro. > > 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 > > > Bill Grabowski wrote: > >>What I thought to be an easy job turned into a dog. This set will not >>lock on channels quick enough to allow auto-programming. I have changed >>the following and re-adjust the aft tank coil after each for the >>quickest lock on station. I replaced the IC1001,comb filter,tuner,AFT >>tank coil. I have all the necessary voltages at the tuner. Anyone have >>any ideas?? I'd appreciate it,Thanks!! >> >> Bill G. > > ----------------------------------------------------------------------------- > This Email List is Public. Remove: http://www.tech-assist.org/remove.htm > Set Vacation mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation > Lost Password: http://www.tech-assist.org and select "Login Problems?". > Email Archives: //www.freelists.org/archives/techassist/ > -- ***************************** Bill Grabowski Triangle Appliance Kenosha,Wi 53142 262-694-6500 262-694-6523 fax bgrabowski@xxxxxxxxx ***************************** ----------------------------------------------------------------------------- This Email List is Public. Remove: http://www.tech-assist.org/remove.htm Set Vacation mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/