The 40v Ryobi string trimmer that I bought in 2020 is behaving strangely. It seems to be doing one of three things, depending on the day I use it:

• It works normally, or
• It will run as long as I hold the trigger down, but if I let it stop, it won’t restart until I remove the battery for a moment, or
• It won’t stop running - spinning at a very slow rate (not so fast that it’s dangerous, but it shouldn’t be doing it at all) - even when I let off the trigger.

This happens with both batteries I have - one is 4 ah and came with the trimmer, the other is a 5 ah and is about a year newer. There doesn’t seem to be any consistency between how it operates and which battery I use.

Up until a few weeks ago the trimmer worked normally all the time, no issues at all. Then one day it started doing this out of the blue. There was no impact or damage to it.

Any thoughts? It feels like some sort of logic board issue to me, assuming there is one in the trimmer.

I’d think if it was the trigger itself, it would do one or the other thing and wouldn’t reset when I removed the battery…but who knows.

Thanks for any ideas!