Hi all new to the forums and man am I excited to be here
I've always been in to taking things apart, learning how they tick and getting things to work when broken, as well as a slew of other DIY projects.
I'm a bit late to the game in learning about electronics in our now Throw it away mentality society but that doesn't stop me from tinkering.
After several other successful repairs I have a new project, a Vizio GV42L I picked up from goodwill for $25. I'm in the process of troubleshooting it now and have the service manual for it.
Symptoms: TV when plugged in and power button is pressed I hear a relay click but I am not getting any backlight or standby LEDs to light up.
Troubleshooting thusfar: I have taken a multi-meter to the power supply and verified fuses are fine and proper voltages are being put out for the 24V, 5V and 12V lines. Fuses on Mainboard seem to be good. Walking through the service manual on the DC-DC circuit I have got to U5 not reading 1.8V but only .8V it is a AMC1117 and from reading here it appears the direct replacement is:
1.8V Fixed:
http://www.digikey.com/product-detai...SCT-ND/1967216
I'm going to place the order today for it and then move on to the next areas.
Just keeping a log and of course looking for any advice or tips as I go along.

I'm a bit late to the game in learning about electronics in our now Throw it away mentality society but that doesn't stop me from tinkering.
After several other successful repairs I have a new project, a Vizio GV42L I picked up from goodwill for $25. I'm in the process of troubleshooting it now and have the service manual for it.
Symptoms: TV when plugged in and power button is pressed I hear a relay click but I am not getting any backlight or standby LEDs to light up.
Troubleshooting thusfar: I have taken a multi-meter to the power supply and verified fuses are fine and proper voltages are being put out for the 24V, 5V and 12V lines. Fuses on Mainboard seem to be good. Walking through the service manual on the DC-DC circuit I have got to U5 not reading 1.8V but only .8V it is a AMC1117 and from reading here it appears the direct replacement is:
1.8V Fixed:
http://www.digikey.com/product-detai...SCT-ND/1967216
I'm going to place the order today for it and then move on to the next areas.
Just keeping a log and of course looking for any advice or tips as I go along.
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