Question about Vizio JV50P 50 in. Plasma TV
Opened it, found three fuses, all check OK. Power up clicks a relay or two, and three green lights flash for less than a second on the board (about center of the chassis) stamped A1 and holding a large (about 1.5 in. square) IC identified as IC101. Those are the only visible signs, no screen light up, no audio.
If Vs is showing less than 1 ohm, that is your shorted line. it goes the sustain and address boards (big boards on left and right side of set) and one of those is bad. try using the same ohm check to see which is shorted and replace that board to fix the set. if it is the address board (one that plugs into boards with lots of chips addressing each horizontal line of screen) you need to check all the address buffer chips. make sure there is no little pin sized hole burned into one of these chips or it will blow out your new address board.
other names for boards
address = Y sustain
sustain = Z or X sustain
Posted on May 26, 2010
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Posted on Jan 02, 2017
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