RCA 27" F27TF12 no chassis number, made by Sharp Missing blue on CRT. Measure the voltages for each drive coming into the CRT board. Should be about 2.6V, missing drive will be lower voltage. Fix" leaky D413 (for blue) on main board beside the jungle IC. 6.2V 1/2 watt zener. Al G Al's TV-Electronics Pembroke Ont. Canada ----------------------------------------------------------------------------- Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/