Troubleshooting - Sony HT-NT5 Service Manual

HT-NT5
No
Power does not turn on.
(front panel display does not
appear)
Yes
When connecting the TV monitor to
the main unit by the HDMI cable,
and disconnecting/connecting the
AC power cord, the video is
displayed on the TV monitor.
Yes
Fuse (F6001) on the AMP board
conduct the electricity.
Yes
The voltage of the following is 3.3 V.
MB-1509 board:
IC5001 pin 11 (PCONT_OLED)
Yes
The voltage of the following is 12 V.
MB-1509 board:
test point (JL318) (OLED_12V)
Yes
the organic EL indicator element
that is inserted to the connector
(CN1302) on the DISPLAY board.
between the connector (CN1303)
on the DISPLAY board and the
connector (CN5003) on the
MB-1509 board.
board.
– Continued on page 39 –
38
SECTION 4

TROUBLESHOOTING

The voltage of the following is 33 V.
POWER board: CN904 pin 3 to 5
No
The voltage of the following is 12 to
18 V.
POWER board: CN904 pin 9
Yes
Replace the complete MB-1509
board.
No
Replace the fuse (F6001) on the
AMP board.
No
Replace the complete MB-1509
board.
No
Replace the complete MB-1509
board.
Replace the fuse (F901) on the
POWER board.
No
No
Fuse (F901) on the POWER board
conduct the electricity.
Yes
Fusible resistor (R914) on the
POWER board conduct the
electricity.
Yes
Replace the complete POWER
board.
Replace the IC930 and fusible
resistor (R914) on the POWER
board.
No