Road Kings switch issue

DMT29

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Donor 5 years: 2018-2021, 2023
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Had a bunch of switches go out on my Road Kings. Come to find out, it is the entire column 4 on the switch matrix. J8-4 has continuity back to the board. All the J10 wires have good continuity also. Pulled J8 and J10 and tested with a jumper and every switch is dead. Leads me to believe it is the transistor at Q48?

Am I missing something?
 
Sounds like you're on the right track. Do you have the manual? Is Q48 at the source on the driver board?
 
Confirmed transistor at Q48 crapped the bed. Tested bad out of the board. It is responsible for the entire column of switches, according to the manual. New one installed got all the switches working again.
 
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