[southsatcom]

ok, i think i experienced the "pop of Death" on my Vizio VW46L lcd tv. While gaming on it i heard a loud pop then the whole set went dead. No power at all, i wasn't going to just throw my thousand dollar tv away and being that its out of warranty by six months. i decided to try and trouble shoot it myself. I figured it had to be something with the main power supply board because not even the vizio symbol would light up. So i examined the old board and found a resistor burned on it. Replaced that resistor with a new one and plugged it in without any other components connected to the power supply board and it immediately popped the resistor again. Now, i was told the resistor's are used a fuzes TVs so its probably another problem on the board. So, from there i decided to order a new power supply board and did so, however when looking up my tv the board p/n was suppose to be a B094-103 and the board in my tv is a B094-101. I could not find the 101 at all on the net so a got the 103. its an identical board but is missing sum capacitors seemingly belonging to the audio side and is missing the audio plug receptacle. I installed the board and left everything disconnected and sent power to the board, it was good.. Hooked all the components one by one and the board stayed good and i had power to the vizio and it was orange like normal. I reassembled the TV and powered it back up, the Vizio was orange and then turned blue when a turned the set on. However, nothing else.. i could see the screen get i light blueish color right after i turned it on then it would go black but the vizio stayed blue meaning it was still getting power, just no video or audio.... any suggestions.

 

[Extreme_Boky]

You have two power supply boards that are almost identical. I would compare both to find what went wrong with the original power supply and fix that. Most likely a switching transistor. If you know how to check semiconductors (compare good ones on 103 with suspect ones on 101) - you could easily find problem component(s). Otherwise you'll need service manual to figure out the difference(s) between 101 and 103.... or original 101 part.


Boky

 

[Servicetech571]

IS the backlight on your set turning on then off? When the TV is on with the backlight not working can you see a menu when holding a flashlight at an angle to the screen? If you can see the menu with a flashlight and have 24V going to the inverter, the inverter is bad. If no 24V to the inverter your used/refurbished power supply (I've never seen a NEW Vizio part) is probably bad. It isn't uncommon for us to use slightly different part numbers in Vizio sets since you can't buy new parts for Vizio. If your inverter is bad get the numbers off the inverters (probably LG Master/slave setup, change both).