Re: Vizio VS420LF1A - Attack of The Black Screen

After taking false measurements for about 10 minutes (multimeter issues), with the screen on the floor, the screen turned from blackness to blue glow [I]without me knowing[/I]. When I finally figured out the top voltage setting (there were two) was the one I needed to be on, I started getting the following measurements.

Voltage Measurements with TV on (fully working and with me unaware)

U2 - Input: 4.8 Output: 3.2 Pin3: 2.01
U4 - Input: 4.5 Output: 3.29 Pin3: 2.05
U5 - Input: 4.8 Output:...

Re: Vizio VS420LF1A - Attack of The Black Screen

Here is the types of voltage regulators for now:

U2, U4, U5, U7, U8 - K481 G1117
U9 - 1084 0845CL
U11 - 7805CT RAF842G

Re: Vizio VS420LF1A - Attack of The Black Screen

PlainBill,
Thanks for your response. Yes, my terminology is very inconsistent - I hope you were able to decipher what I was saying for the most part - From what you have written it sounds like you have. I'll attempt to test tonight. Please stay tuned. Thanks again.

Travis

Re: Vizio VS420LF1A - Attack of The Black Screen

Here are some pictures. Let me know if you need a close up or a different angle. Also update: Just started noticing a different sound (like a stuck pig - well, the sound a stuck pig would make if it was the size of an ant) coming from the control board....

Hello,

I have searched everywhere throughout these forums and on the web, and I've read just about every possible scenario of problems with LCD TV's except mine. The closest post that I found was posted by RRR13 about one year ago. Who had a similar issue - [URL="https://www.badcaps.net/forum/showthread.php?t=13132&highlight=vizio+lcd+control+board"]read here[/URL]. So I thought I would get my story out there in hopes that I may be able to help another fellow poor sap with the same exact problem as me.

Here's my initial observations: Black/grey screen...