Author Topic: Repairing a drill battery charger.  (Read 250 times)

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Offline Bashstreet

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Repairing a drill battery charger.
« on: December 03, 2017, 12:00:05 PM »
Hallo allo.

My battery charger has gone kaput it shows 5.2 volts when it should give 15.6 dc 500 mA 7.5VA

I cracked it open and suspect the filter cap is gone  :box:

Checked diodes etc .

Question is it has 100uf 35v cap. (output)

As i do not have 100uf caps at that voltage atm but larger ones 1000 uf. Can i use one of those ? :scared:

 

Offline MomirPeh

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Re: Repairing a drill battery charger.
« Reply #1 on: December 04, 2017, 07:30:40 AM »
Hi there,

Any pictures? That would help a lot to figure out what kind of power supply we have there. Is it switching power supply or a linear one. Does it have any charging control circuit (dedicated or MCU based). After we found out that, we can try to troubleshoot it step by step.
 

Online grifftech

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Re: Repairing a drill battery charger.
« Reply #2 on: December 05, 2017, 06:02:20 AM »
What type of battery does it use?
 
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Offline Bashstreet

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Re: Repairing a drill battery charger.
« Reply #3 on: December 05, 2017, 08:07:40 AM »
What type of battery does it use?

Thank you for answering.

I am now using another power supply as i found out the linear transformer was the issue
I discarded it as non feasible repair.  :horse:
 


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