Question about Schumacher & Fast Charge Starter Charger

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Schumacher 2/10/50 amp charger,125/225 amp starter

I have a 2/10/50 amp charger,125/225 amp starter charger battery tester. Fan, amp gauges work but it will not charge a 12 volt battery. What is the most likely problem?

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  • boettcherjk Feb 25, 2009

    Yes, I tried more than one battery.

    Yes, it is a gauge not a light.

    When I turned the charger on before touching the leadsthe gauge went all the way to good. after touching the leads the battery indicator now will not move to any of the conditions, also the voltage indicator below does not show any voltage on any battery I charge like it used to, it does not move at all.

    Thank you.

  • boettcherjk Feb 25, 2009

    The model is SE2158 I also tryed with my ohm meter on the leads and the charger running at 2amps, there was no reading. Thank You

  • Jim London
    Jim London May 11, 2010

    Do you have the model number?

  • Jim London
    Jim London May 11, 2010

    Hi, Have you tried more than one battery? Does it have a bad battery indicator? If so touch the leads in the 2 amp position and see if the bad battery indicator lights. If not let me know.

  • Anonymous Mar 22, 2014

    The charger clicks on and off but will not charge.All is does is click.

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It could be an internal fuse, or that the transformer is malfunctioning.

Before any dis-assembly/internal inspection, be sure that the unit in unplugged.

Good luck...

Posted on Feb 25, 2009

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Hi again, There are not a lot of parts available for this model, There are rectifiers, diodes and circuit breakers. I do not have a manual for that particular model. I am curious that when you put your ohm meter on the leads you read nothing. Don't do that with the unit on! It could be circuit breakers, they are the grey things that have a terminal on each side, they are labeled Buss ( like the fuses) the terminals may be labeled "bat" or "aux" They are more like a fuse than a circuit breaker. Check them with you ohm meter. You have to open the unit to get to them and since you will have it open if it is not the breakers, check the diodes, which are transformer safety for polarity reversal. last you can check the transformer, it is a multitap so the primary would probably not be suspect since you have power to the fan and guages. My bet is on the breaker! Let me know how this works out and thanks for sticking with it. Hope this Fixsya!

Posted on Feb 26, 2009

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