5 Blinks fault – Plasma 9th Generation TVs TH-42PX50U
Standby light blinks 5 times; and the set shuts down - Plasma TV
Power
LED blinks 5 times
This
is caused by abnormalities on the 5V line.
This
could also happen if the VDA voltage is shorted.
5V distribution
Other
Causes of 5V SOS
The
Power LED could also blink 5 times if the VDA voltage is shorted [Normally by the
Panel (de-multiplexer ICs)]
5V
and VDA Distribution on the C Board.
How to properly isolate the C boards
When
the ribbon cables from the D board to the C boards are disconnected in
order to isolate the C boards, the Power LED will blink 6 times.
To
properly isolate the C boards without having the Power LED blink, the
test point TP9387 (Labeled TP9387 on the D board) should be grounded
through a 1K resistor.