No Power/Dead Unit
Do the AC relays
click after the TV is plugged
into the AC line?
Does
pin 9 of connector
A1 go from 4.5V to 0V while the
power button on the TV is
pressed?
Is there 5V present
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
33
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?
Unplug the TV and place your volt-meter
on pin 11 of connector P25 or A25. Plug
in the TV and press the power switch
Is there 3.2V
present when
the power
button is
pressed?
Unplug the TV
Check connection
between P12 and
SS12. Also check for
missing jumper on
SS34 on the SS board.
If jumper on connector
SS34 is present,
replace the SS board.
Yes
Disconnect connector A7. Place your
volt-meter on pin 5 of connector P7.
Plug in the TV and turn it on.
Place your volt-meter on
pin 9 of connector A1.
Press the power switch
Warning:
Disconnect AC
Power prior to making any
disconnection or connection
Unplug the TV and place your
volt-meter on pin 5 of
connector P7. Plug in the TV.
