Panasonic TC-PXXGT30, Technical Manual

Page: 52 / 83

Detailed Troubleshooting
Procedure for Shorted Vda
From the
previous
slide (B)
Yes
No
Replace the P
board
Is there a
short
circuit ?
Reconnect the ribbon cable between the
C2 and C3 boards and unplug the ribbon
cable between the C1 and C2 boards.
Measure the resistance between pin 1 of
connector P35 on the P board and ground
(Chassis)
Yes
No
Is there a
short
circuit?
Yes No
Is there a
short
circuit?
The problem could be the C2
board or the panel. Proceed to
isolate the panel from the C2
board to determine which is bad.
The problem could be the C1
board or the panel. Proceed to
isolate the panel from the C1
board to determine which is bad.
Reconnect P35 and unplug the ribbon
cable between the C2 and C3 boards.
Measure the resistance between pin 1
of connector P35 on the P board and
ground (Chassis)
The problem could be the C3
board or the panel. Proceed to
isolate the panel from the C3
board to determine which is bad.
Unplug the TV and remove connector P35. Check the resistance between pin 1 of connector P35 on the P board and
ground (Chassis).
From the
previous
slide (A)
Continue on
next slide (A)
Unplug the
TV and
reconnect
SC20.
Perform the
VSCN-
F/5V_F
resistance
test as
indicated on
the next slide
8 Blinks
Note: For Slim
models (GT &
VT30), go to
the slide after
the next.
Slide 52