Re: Ego 56V battery charger dead
1) That cap has to be at least 1KV rating, more likely that it is 220pF 1KV but I would use 2KV since this is commonly failed cap.
2) What is the exact resistance do you get when measure between Source and Drain pin? You do know what each pin of the MOSFET is correct?
3) Did you check the Source pin resistor as I suggested?
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Re: Ego 56V battery charger dead
The Cap was blown pretty badly so could not read what was on it. I think it might have been a 2.2nf 1KV cap. I replaced it with a 2.2nf 250V cap but still no life from the charger. It does not appear to be shorted across the 2 pins of the cap. The 2 outside contacts of the mosfet seem to have continuity though.Leave a comment:
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Re: Ego 56V battery charger dead
That is a snubber cap connected in parallel with Sourde and Drain pin of the MOSFET. Can you still read what is printed on the cap?
You also need to check the Low Ohms resistor connected between the Hot side circuit ground and the Source pin of the MOSFET to make sure it is not blown open circuit when that cap shorted out, if that resistor is blown the SMPS IC that drives the MOSFET can be damaged also.
Did you check the resistance between Source and Drain pin of the MOSFET after removing the blown cap?Leave a comment:
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Re: Ego 56V battery charger dead
see if its shorted and check whatever its connected across ..might be a fet .Leave a comment:
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Ego 56V battery charger dead
I would like to try to repair an Ego brand standard 56V battery charger. The model number is CH2100.
There is a brief YouTube video on it here:
https://m.youtube.com/watch?v=2cYAKUuVgUE
The charger appears to be completely dead. Upon disassembly I found the glass fuse is ok. The only visible damage was a completely blown ceramic capacitor behind the two largest caps.
I am attaching a few photos with arrows to the location of the blown component.
I'm hoping for some suggestions as to what might have caused the cap to blow and how to troubleshoot further.Attached Files -
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