In this video we finish the repair process for a 2001 Polaris Expedition 425 Speedometer and show some testing at the end as well as share some schematics found online that may help someone with similar issues with theirs. This speedo belongs to a friend and it is interesting how this works. After looking into these, It seems to be a common failure on them for running them with a bad battery or no battery. It seems the voltage charge regulator may cause issues with the internals of the speedo. Another bad deal with no speedo is that the four wheel drive enable comes from this speedo as well to make sure the vehicle is at zero speed before shifting. I share in the first repair video how helpful the site was called KA7OEI's blog in helping me identify the burnt resistor on this board. The site has lots of help on these and I highly suggest checking it out if you are having the same issues. I will go further with this repair and see if we can still get this one back going after 7 components in the first video, we still have more failed components to go. It is a blessing that the Main Microcontroller is not dead. Hope you find this video helpful and thanks for watching!
KA7OEI Blog Link that was extremely helpful:
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Негізгі бет Ғылым және технология Polaris Speedometer Repair - Part 2
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