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Repair Shermax with BT-LOY ?


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I got this error today. The wheel didn’t tip or anything, it just popped up after about 15 miles. 
 

 

I know this is a damaged BMS - is there a standard way to fix this? 
 

im assuming a new BMS will need to be installed, do i need to contact leperkim to get em or what’s the deal??

 

 

 Thanks guys

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If there is a warranty, reach out to the seller. If the seller is not a dealer, then maybe you’ll get some luck dealing with the manufacture. Either way, replacing the board is easy peasy. 

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Lots of places still have them for sale. For info I changed one in a friends Sherman and although not difficult you will certainly need a decent soldering iron as some of the solder sites are big - you'll do nothing with a feeble iron except send loads of heat into the board over time and likely never melt the whole site at the same time. Other than that, just use extreme caution - theres a lot of power sitting there just waiting for you to short circuit something. Don't rush anything and make sure theres no distractions!

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2 hours ago, Whitebeard said:

Either way, replacing the board is easy peasy

He is talking about replacing the bms. Are you thinking about the control board?   

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On 3/25/2024 at 8:33 PM, Planemo said:

Lots of places still have them for sale. For info I changed one in a friends Sherman and although not difficult you will certainly need a decent soldering iron as some of the solder sites are big - you'll do nothing with a feeble iron except send loads of heat into the board over time and likely never melt the whole site at the same time. Other than that, just use extreme caution - theres a lot of power sitting there just waiting for you to short circuit something. Don't rush anything and make sure theres no distractions!

Right on! 
 

honestly I don’t believe I will be the one fixing it, as I’m missing an arm lol

thankfully I’m in Denver and we have an awesome group of dudes here and I’m sure someone will help out for a few dabs!!

 

thanks dude

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