Countless companies and industries enjoy making up scary stories when it comes to justifying their opposition to making it easier to repair your own tech. Apple claims that empowering consumers and bolstering independent repair shops will turn states into “hacker meccas.” The car industry insists that making it easier and cheaper to repair modern cars will be a boon to sexual predators.
Almost got scammed by Rad Bikes this way. Battery mysteriously failed 10 months into their 1 year warranty. Rad Bikes accused me of sabotaging the battery and refused to honor their warranty, but “generously” offered me free shipping on a $300+ replacement battery. Turns out the off-the-rack fuse they use blew; identical down to the manufacturer to the ones used in cars. Replacement fused was <20 cents and fixed the problem instantly.
Wait a minute, why did the fuse blow in the first place? This might be a safety issue and should be handled by the warranty.
There might be a reason. But if the reason really is a safety issue, then it would also blow the second fuse.
That is what fuses are made for.
What tripped the fuse, though?
Not saying the question shouldn’t be asked, but replacing the fuse should be the first thing. If it blows again, you have a problem. If it’s fine, you probably had a bad fuse. It’s more if you bypass the fuse that you are asking for trouble.
Obviously sabotage.
He weaseled his way into the company and changed an engineers documents without them noticing, causing them to over rate the motor controller…
Or just an over current, which could be as simple as surge when connecting due to a discharged capacitor.