42lg30-ua lcd inverters

[cadiman]

I just picked up this 42" lcd 2008 model 42lg30-ua.
It has an inverter problem. There is a master and a slave inverter and I am not sure how these work together. I am going to remove and test the transformers.

Looking for some insight on this design and have read you should change in pairs.

Thanks!

[thelmores]

Re: 42lg30-ua lcd inverters

This will help you ensure that is is the inverters, and not a power supply problem. Normally the only thing I will attempt to repair on inverters is the capacitors. If they are puffy or bulged.

Other than that, you normally just replace the inverters.......

I have just changed one inverter before, but it is a risk. If you can, best to change both.

http://www.google.com/search?q=VIT71...a69e3db245d910

http://www.google.com/search?q=VIT71...a69e3db245d910




Hope this helps!

[cadiman]

Re: 42lg30-ua lcd inverters

Nice! I found a shorted transister and a blown surface mount fuse on the slave inverter.
I have 24v to the board... power supply is good.

The master inverter fires up and I do get backlight for a few seconds.
I removed all transformers and checked primary and secondary and all were good/same.

I am going to replace the fuse and transister and it should be good to go I hope.

Thanks for the info and the feedback!