Troubleshooting 3 Fast Blinks Failure (TC-P50ST50)
Yes
Unplug the TV. Check for short circuit or low
resistance between pin 13 of connector P6
and ground (Chassis ground).
No
Is there a short
circuit or a
resistance
lower than 1
Kilo-ohm?
Start Here
Replace the P
board
Replace the A
board
List of boards likely to cause this symptom.
Blink
Code
No.1
No.2
No.3
No.4
No.5
3 Blinks
A P
SS/SC
Bluetooth
Module
Panel
Is there a short circuit
or a resistance lower
than 1 Kilo-ohm?
Yes
No
Replace the A
board
With the TV still disconnected, remove connector
A6 from the A board and perform the same
resistance check on pin 13 of connector P6.
Reconnect A6 and remove connector SC20
from the SC board and check for short circuit
or low resistance on pin 13 of connector P6.
Is there a
short circuit or
a resistance
lower than 1
Kilo-ohm?
Yes
No
Replace the SC
board
Reconnect SC20 and remove
connector SS33 from the SS board
and check for short circuit or low
resistance on pin 13 of connector P6.
Is there a short
circuit or a
resistance lower
than 1 Kilo-ohm?
Yes
No
Replace the SS
board
Slide 12
Unplug the blue-
tooth module. If the
blinking stops,
change the blue-
tooth module
Reconnect SS33 and remove connector
A31 and A32 from the A board and
check for short circuit or low resistance
on pin 13 of connector P6.
Is there a
short circuit or
a resistance
lower than 1
Kilo-ohm?
Yes
No
If no short
circuit is found
on any of the C
boards, change
the panel
