Read Harman Kardon SB 26 Service Manual online
5-8 Trouble shooting Chart
HDMI in does not work
HDMI in does not
work
Go
No
Check U23 PIN8 +5V
whether
normal or not
No
Yes
Check the optical connector
Check 1.3V of U23 voltage on H DMI Board
whether normal or not
whether normal or not
Check 3.3V of U11 voltage on H DMI
Board
whether normal or not
Board
whether normal or not
Yes
Check the clock and data of U3 and
on the HDMI board
Check the 34PIN FFC connect the
HDMI board and main board.
HDMI board and main board.
whether
normal
or not
No
Replace U3
Yes
No
Replace 34pin FFC
Harman Kardon
SB 26 Service Manual
Page 13 of 44
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