50 inch plasma lg50PC1D

[ronnieboy1]

hello there, got a funny one here, switch on front led blinks 5 times then stays solid green....all voltages seem ok except va vs which are at 1.1v....changed 10x 3300uf 10v ...all bulging...no differant..plus a few others. have no circuit diagram which doesnt help..looks a hideously complex power supply to be honest. regards brian

 

[ronnieboy1]

For all you budding tv repairmen out there, ive repaired this set. it was the 2x 470uf caps on the vs va outputs from the power supply....they read ok look ok but when you scope them theres massive ripple across them. all the caps that were bulging were ok!!! so beware its not always going to solve your problems. regards brian

 

[robstv]

caps

hi alli have same tv turn it on has sound but no picture and have changed then 2 caps but still not working the screen just flashes on and off to a slight clicking doing my head in

 

[ronnieboy1]

check the va and vs voltages they should be about 192v and 60v approx, in fact check all the voltages indicated on the board.

 

[robstv]

thanks for that will do and get back to you

 

[robstv]

ok had a look for va and vs on the main board i put the red lead off my meter on the va / vs lead and dose the black lead go to grd/gnd with the set rurned on what should the reading be on va and also on vs. or am doing it wrong