Panasonic TC-PXXGT30, Technical Manual

Page: 55 / 83

Unplug the TV and disconnect connector SU41/SC41 (See the previous slide for location). Follow
the
VFO/VSCN_F and VF_5V Resistance Test procedure explained on the previous slide.
With SC41/SU41
disconnected,
disconnect SC42/SD42
and follow the
resistance test on the
previous slide.
Yes
No
Is there still a
short circuit?
Replace the
both the SU
and SD boards
Yes
No
Is there a
short
circuit?
Replace the SC
board
Replace the SC,
SU, and SD
boards
Disconnect connectors SC41/SU41,
SC42/SD42, and SC46/SD46 and
remove the VFG screws from the SU
and SD boards. Then install the SC
board Jig (P/N or jumper across pins 1
and 2 of connector SC50 (See the next
slide for location)
Plug in the TV and press the power
switch.
Yes No
Does the TV
turn on and
stay on ?
(Black screen)
Replace the SC,
SU, and SD
boards
Note: If either the SU or SD board is
shorted, all 3 board must replaced together
(SU, SD, and SC). Is highly likely that the
SC board may be also bad even though it
does not show a short circuit.
Yes
No
Is there a
short circuit?
From previous page
Replace the SC
board
Even though this procedure only
indicates that the SD board is bad, all
3 boards (SU,SD, & SC) should be
replaced at the same time
Even though this procedure only
indicates that the SU board is bad, all
3 boards (SU,SD, & SC) should be
replaced at the same time
Slide 55