John, I would suspect the Jungle chip. U1001. John Myers Myers TV Service Co. 376 E. State St. Alliance, OH 44601 Voice / Fax: 330-821-6545 Myers_tv_b@xxxxxxxxxxxxx http://www.myerstv.net Work as if you were to live a hundred years, Pray as if you were to die tomorrow. Ben Franklin John H Smit wrote: >Hello to all. >This GE TV 27GT613-CTC177 BH2 has a fast vertical roll. >I thought this to be a piece of cake,but by now it gives me a hard time > >I have checked the voltages on the vert IC U4501 and they are all within >specs. >Only the frequencies are 45 hz on pin one and pin 3 instead of 59 hz. >And on pin 5 the vert out I get a horizontal frequency of 15734 Hz > >I have checked C4505-C4506 they are OK >I am running out of idea's and am wondering if someone has a clue to this >problem. >thank you in advance >John H Smit >Smit's TV Service >Box10 >Gunnison Utah 84634 >800-355-4948 Phone&Fax >435-528-7955 Phone&Fax >jsm@xxxxxxxxxx > >----------------------------------------------------------------------------- >This Email List is Public. Remove: http://www.tech-assist.org/remove.htm >Lost Password: http://www.tech-assist.org and select "Login Problems?". >Appliance Repair List: http://www.tech-assist.org/secure/tip/chatjoin.htm#app >Email Archives: //www.freelists.org/archives/techassist/ > > > > ----------------------------------------------------------------------------- This Email List is Public. Remove: http://www.tech-assist.org/remove.htm Lost Password: http://www.tech-assist.org and select "Login Problems?". Appliance Repair List: http://www.tech-assist.org/secure/tip/chatjoin.htm#app Email Archives: //www.freelists.org/archives/techassist/