I have not been successful with installing the isolation transformer on the Zenith TVs manufactured from I think 93 or 1994 to 1996 -I replace all the parts and get running install the isolation transformer let it sit running and eventually within maybe minutes or hours it starts to ark (retrace lines and bright screen)and I know it's going down if I don't shut off-I've been bitten by this so many times I would just rather pass on them but I need every job I can squeeze out of here now-any help guys? Thanks -- Tony Electronics Inc. 7027 Hwy 441 Dillard , GA 30537 706-746-3353 farful@xxxxxxxx electronics@xxxxxxxxxx Help make your TechAssist online repair tips database better! Submit your fixes here: http://www.circuitwork.com/techassist/tip/#tips To unsubscribe write to: techassist-request@xxxxxxxxxxxxx with unsubscribe in the subject line.