Connect with us

Bosch drill switch

Discussion in 'Troubleshooting and Repair' started by ThomasWheeler, Jun 24, 2017.

Scroll to continue with content
  1. ThomasWheeler

    ThomasWheeler

    32
    1
    Apr 25, 2016
    Hi, I'm Thomas. I have a Bosch 0601915720 cordless drill. It uses a 7.2 V battery. I had replaced the drill's battery and was using for about ten minutes when the motor slowdown a lot until it stop completely, but the voltage of the battery is still 7.2 V. So I measure the voltage of the drill's circuit. When I press the switch the voltage drop from 7.2V to 1V. So I try connecting 7.2V directly to the motor and it spin normally with the voltage dropping to 5.7V. So I check the continuity of the switch, and it seem to be fine, the resistance is 0 Ω when I press the switch. I opened up the switch and clean the contacts inside it, but it still doesn't work.
    How can I figure out what the problem is, I want to try to fix the switch.
     

    Attached Files:

  2. Bluejets

    Bluejets

    5,131
    1,071
    Oct 5, 2014
    Those switches are fairly complex units with forward/ reverse and variable speed. Not the sort of thing one dismantles and "cleans" the contacts.
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-