No Power/Dead Unit
Do the AC relays
click after the TV is plugged
into the AC line?
Does
pin 6 of connector
A1 momentarily go from
4.5V to 0V when the
power button is
pressed?
Is there 5V at
pin 5 of connector A7/P7
when the TV is plugged into
the AC line?
Is there 5V when the
TV is plugged in?
If wiring connections
are ok, check
the S & K boards.
Replace
The A board
Replace
The P board
Replace
The P board
Replace
The A board
Go to the
Next slide
Yes
Yes
Yes
Yes
Yes
NO
NO
NO
NO
NO
Yes
NO
25
Trouble Mode
Dead/No power
Defective Board (Possibility)
P, A, GS, K
Is there continuity
between pins 8 and
10 of connector P12
of the P board?
Place your meter
on pin 11 of connector
A25 or P25.
Is there 3.2V
when the power
button is
pressed?
Unplug the TV
Check connection between P12 and
SS12. Also check for missing jumper on
CN SS34 on the SS board. If jumper on
connector SS34 is present, replace the
SS board.
Yes
Unplug the TV and disconnect
connector A7. Place your meter on pin 5
of connector P7. Plug in the TV and turn
it on.