Good afternoon ... I have this TV that did not turn on, all dead, the source did not oscillate and therefore did not give the corresponding voltage outputs in the secondary of the chopper like the B + etc ... I check everything at the source and everything is fine, there is even a small module and check the main components looking for some short but nothing, everything is apparently fine .. Outside of that module, in the source of power in one of the R877 resistors that came with 2.2k value that for me it looks changed by another value, I take it off from a pin and the TV turns me on all perfect giving its output voltage values well within the parameters. The B + comes to me in 113v ... The question is ... how and why did the TV turn me on without that resistance? ... Is it that it is of another value that goes there? it is seen that it was changed .... This resistance in the power source goes in series with a D817 zener diode to ground ... This diode is also changed .. For me one or both components were changed to crazy already that this tv comes from another workshop and they could not ... I need the diagram of at least the source of power or in its effect the value of those two components ... in advance thank you very much who can help me