Bosch PSR 300 LI whistling problem ?

Archived from the Tools In Action forum (Bosch). This thread is read-only.

zenderMember since Jul 2019

Hello, I have problem with my Bosch PSR 300 LI, sometimes it working normally, and sometimes it is ”whistling” like in this video :

 

www.youtube.com/watch?v=BpHBJGYIQZs

 

Is this some kind of electronics problem in it, or what kind of fault is this, can it be fixed ?
 

Thanks.

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