Re: Vizio VW42LFHDTV10...Brother Mikes TV...

All right. It seems like U5 have to go. I'm gonna replace and see what gonna happen. To be continued...

Re: Vizio VW42LFHDTV10...Brother Mikes TV...

Thank you Bill for the effort to help. I decide to heat up the board with heat gun to see if it will lead me somewhere but with no luck. Set acts the same way. i downloaded service manual that says it is for the same model. Not much of info there for me but I found troubleshoot diagram for DC-DC converter so I went through checking Volts again. In a manual it says that the voltage on a pin2 of U5 must be about +1.8V (which is 1.94) also it says that pin2 of U8 also must be about +1.8v where it is about 3.3V. Either manual is wrong or...

Re: Vizio VW42LFHDTV10...Brother Mikes TV...

Thank you Bill for a quick reply. Sorry I was wrong with which ADO is adjustable and which is not. All ADOs I assumed are adjustable have pin1 ON A BOARD marked as "adj" that's where my misinterpretation came from. Thanks for correcting me. So I took two independent tests again with two different testers. And yes I failed to check voltage on a pin1 of U5. Results are:

ADO____PIN1______PIN2______PIN3
U4.........0.............3.26..........5.04.......17-33L
U5.........0.69.........1.93..........3.26.......AMC1117...

Re: Vizio VW42LFHDTV10...Brother Mikes TV...

Hi all, my first post here. I found Badcaps.net pretty informative and helpful with my other repair of VIZIO crap.
So I've got another fixer-uper. Symptoms are similar: when I press ON button set turns on (with click), LED changes color to white, blue screen appears with NO SIGNAL sign(obviously inverters are good), 2 sec after screen turns black and LED to ambient and after 4-5 sec set turns off (I hear click). I am able to turn it in by pressing ON button again. I took some measurements when set was able to be on(turned it on...