#Lgtv#Power_problem. How to repair lg tv power.

LG TV 21"NORMAL PCB MAIN IC TDA11105PS/N3/3/AN4 EHT BSC25-N1682 VERTICAL IC TDA4863 SOUND IC TDA7297SA STR W6554A POWER PROBLEM 1.Power on/Led not glowing. 2.Measure main power filter condenser voltage-----ok. 3.Check EHT supply voltage----nil. 4.Check STR start on voltage---mlssing. 5.Power off/Open STR W6554A. 6.Again check STR start on voltage----ok. 7.Power off/Set new STR. 8.Power on/Led glowing then off. 9.Power off/Open resister 91K one point. 10.Measure resister 91K+91K+20K--------ok. 11.Open Optocupler. 12.set new Optocupler. 13.Power on/led glowing then off. 14.power off/open KIA431. 15.Set new KIA431. 16.Power on/same,led glowing then off. 17.Power off/open 2pices 47mf/160V. 18.Replace new condenser. 19.Power on/led glowing and check EHT supply voltage---ok . 20.Then------