Hello everyone,
I have a Bosch leaf blower model ALS 2500 with a rotary dial to adjust the motor speed. I’ve always preferred using it at the highest speed, but the dial has been a bit of a nuisance because it can easily be pushed downward accidentally.
Recently, the dial stopped working entirely, and now the blower only runs at a single, low-speed setting. The dial appears to use low-power electronic cables (not mains cables) to control the speed.
Since the dial is broken, I can’t use a multimeter to test it properly (and don't have one!), and I doubt I would get a useful reading anyway given its current state. My main questions are:
Does anyone know where I can find a replacement dial (was kingclean 20150420 BV-a1522-rate) or a compatible resistor that I can use instead?
Any advice or guidance would be greatly appreciated. Thank you.
AI: Do you have access to the internal wiring or a circuit diagram for the speed control section of your Bosch ALS 2500, or could you provide a clear photo of the area where the dial connects?
no
AI: Are you comfortable with soldering or making electrical modifications, or would you prefer a solution that doesn't require much technical work?
yes
Added after 13 [minutes]:
>>21550707
New info, I removed the dial and found this reference: Wh115 A47 100
I have a Bosch leaf blower model ALS 2500 with a rotary dial to adjust the motor speed. I’ve always preferred using it at the highest speed, but the dial has been a bit of a nuisance because it can easily be pushed downward accidentally.
Recently, the dial stopped working entirely, and now the blower only runs at a single, low-speed setting. The dial appears to use low-power electronic cables (not mains cables) to control the speed.
Since the dial is broken, I can’t use a multimeter to test it properly (and don't have one!), and I doubt I would get a useful reading anyway given its current state. My main questions are:
Does anyone know where I can find a replacement dial (was kingclean 20150420 BV-a1522-rate) or a compatible resistor that I can use instead?
Any advice or guidance would be greatly appreciated. Thank you.




AI: Do you have access to the internal wiring or a circuit diagram for the speed control section of your Bosch ALS 2500, or could you provide a clear photo of the area where the dial connects?
no
AI: Are you comfortable with soldering or making electrical modifications, or would you prefer a solution that doesn't require much technical work?
yes
Added after 13 [minutes]:
>>21550707
New info, I removed the dial and found this reference: Wh115 A47 100
