Question about LG DU-42PX12XC 42 in. Plasma HDTV
I can't tell you if the three flashes identify the problem better but it is with fair certainty a power supply failure.
It may be the main power supply or a separate board that produces the high voltage required by the plasma display.
Typically, the parts cost will not be high but the labor may run it up.
If you comment back here with a ZIP code, you may get an offer from a ~local technician.
Posted on Feb 02, 2010
a 6ya Technician can help you resolve that issue over the phone in a minute or two.
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Posted on Jan 02, 2017
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