Repair and restore 6 Bosch Ixo screwdrivers....Ixo 4

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I bought 6 not working Bosch Ixo screwdrivers and three chargers.
Over the following videos I hope to fix them all.
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Were the charging units ok?
I've got one giving 12.5 volts output and the machine refuses to charge...should be about 7-8 volts... Inside the secondary of the transformer gives 8.5 v ac before the rectifier block but arrives at the output pins at 13 vots.. too much so the gun won't accept a charge.. any ideas?

johnkilvington
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Well the battery lasted the length of the video, which is all you need. But would not suggest this if it was for a pacemaker! 🙂

TheEmbeddedHobbyist
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should have just replaced the battery when you had it de-soldered and saved yourself some bother..

fatbelly