Read Harman Kardon SB 26 Service Manual online
5-7 Trouble shooting Chart
Optical in does not work
Optical in does
not work
Go
No
Check R104
whether normal or
not
No
Replace U11
Check 3.3V of C82 voltage on H DMI Board
whether normal or not
whether normal or not
Check the input signal of U11 whether
normal
normal
or not
Yes
Harman Kardon
SB 26 Service Manual
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