Vizio VX42L HDTV10A no ps on voltage

[neatpathfinder]

I have a Vizio VX42LHDTV10A with power supply #0500-0507-0330 and main board #3642-0252-0150. The problem with the TV is an Amber LED. I have trouble shot the power supply and unplugged J1 from the main board and used a resistor to turn the power supply on PSON to 5V. All voltages check good from the power supply. When connected and turning the TV on I get no 3.3v to the PSON pin to start the power supply. On the main board I have 5v standby and 3.3v on U8 output. Fuse 1 and 2 ohm out as good and have 5v on F2 but no voltage on F1. I checked some of the other voltage regulatorS and they seem to have the correct voltages on them. I disconnected the IR board with no change in symptoms. Can someone lead me in the right direction to troubleshoot further?

[neatpathfinder]

Re: Vizio VX42L HDTV10A no ps on voltage

Anybody got any thoughts?

[budm]

Re: Vizio VX42L HDTV10A no ps on voltage

How about the pictures of the whole backside of the TV so we can see how all the boards are connected together?
You should also report the readings of the regulators in the format as shown in this thread: https://www.badcaps.net/forum/showth...999#post300999

[neatpathfinder]

Re: Vizio VX42L HDTV10A no ps on voltage

Will do. Thanks