lg 42lg50 no power or standby but found this

[TechOp]

I found a burnt chip on the mainboard i could replace but one thing doesnt make sense. On the schematic ic802 looks like it only controls the hdmi. Does anyone believe this could be the only problem on the board?

I dont think so....so why isnt the tv on with no hdmi?

All the voltages coming from the ps are good. 5v 12v.

Im going to retake the mb photo i see its not clear.

[mmartell]

Re: lg 42lg50 no power or standby but found this

Try removing it in case it's shorting and pulling down one of the supplies.

[tom66]

Re: lg 42lg50 no power or standby but found this

When an IC related to HDMI blows that bad, it indicates a power surge has affected the HDMI ports. This has almost certainly caused other problems & replacing or removing that IC is unlikely to clear the fault.

A testament to the energy dumped into the IC at that moment is how the plastic over the silicon has been completely blown off.