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RPM transducer / Speed Switch
Posted: Sun Mar 28, 2021 7:13 pm
by knapmann
Just testing the water, mine is dead I have tried to fix it, I'll have another attempt soon, but in the meantime thought I would see if anyone has one going, ideally a known good one. Mine has 4 pins in an "L" shape on the bottom. (not sure if later ones are different)
Re: RPM transducer / Speed Switch
Posted: Sun Mar 28, 2021 9:10 pm
by impmad2000
The transistors should all be replaced as the legs rust. But also the relay soldering very often is dry and fractured. Reflow the soldering to the relay legs too
Re: RPM transducer / Speed Switch
Posted: Sun Mar 28, 2021 9:36 pm
by Alan @ CanfordClassics
If Tim will take it, it could be fixed. I had a sort in the work shop today and found 18 of these! Ok
Re: RPM transducer / Speed Switch
Posted: Mon Mar 29, 2021 9:03 am
by knapmann
impmad2000 wrote:The transistors should all be replaced as the legs rust. But also the relay soldering very often is dry and fractured. Reflow the soldering to the relay legs too
Alan @ CanfordClassics wrote:If Tim will take it, it could be fixed. I had a sort in the work shop today and found 18 of these! Ok
Thanks guys
I found a couple of the transistor legs corroded so I replaced them. I also re-flowed all the solder on the back. It still doesnt work
I plan to next replace the diodes. If this doesnt work then I dont think there is much more I can do with it.
Could I buy one off you Alan if I cant get this working?