I have a VW42l as well and am getting sound but no picture. the people I bought it from took it to a tv repair place and were told the inverter board needed replaced. I assumed it was just the capacitors (although there was no bulging or leaking) and replaced all 4 of them, nothing has changed, still no picture but still have sound...any ideas? I ordered new boards (master and slave) to try those in a couple of days, but if the capacitors were good I'm not sure if the boards are the problem...
Nov 22, 2010
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Product Troubleshooting for VX42L 42 in. LCD TV
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On the inverter and power supply modules there will be voltages written on the boards, by the connectors, and you can check and see if you are getting the right voltages at the boards, and if they are not right, then you might need a power supply board.