Read Harman Kardon SB 26 Service Manual online
5-5 Trouble shooting Chart
Subwoofer no output
No
Subwoofer no output
Go
Check power supply
Yes
No
Replace the 24pin FFC
Check 3.3v of FB1 on the wireless TX
board
Check 24pin FFC whether normal or not
Harman Kardon
SB 26 Service Manual
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