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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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03-31-2020, 02:31 PM | #11 |
Not Yet Wild
Join Date: Jun 2017
Posts: 14
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Re: Charger hums but shows zero amps
No worries man, thanks for the response! Do you think that could be the issue though? Or would it not be cutting on at all if it wasn't making contact? I also know there's an option to bypass something in the charger and I wonder if this charger is setup that way where it would cut on even if it didn't make contact.
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03-31-2020, 02:52 PM | #12 | |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: Charger hums but shows zero amps
Quote:
Also, with the charger case is off, you can see the wires plugged into the relay. On the other hand, the missing insert doesn't explain the puff of smoke mentioned in your first post. |
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03-31-2020, 03:15 PM | #13 | |
Not Yet Wild
Join Date: Jun 2017
Posts: 14
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Re: Charger hums but shows zero amps
Quote:
So let's forget the smoke for a minute. Let's say the plug isn't making contact or is making bad contact. Would that charger cut on at all if that was the case? |
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03-31-2020, 06:03 PM | #14 | |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: Charger hums but shows zero amps
Quote:
The control board is a semi-mart switch. The has to be about 30V between the black and red wires attached to it for it to close the relay and turn on the charger circuit (consisting of a ferroresonant transformer, a boost capacitor and two diodes) and when the voltage between the black and red wire climbs up to 45V +/-1V, the relay opens, or if that voltage isn't reached withing 12 hours the relay opens. The red wire connects to the heatsink the diodes are attached to, which is connected to the carts main positive terminal via the ammeter, fuse and some wires and connectors. The black wire is the tricky one. It connects to the battery pack's main negative terminals via a separate wire in the charger's output cable and connects to the OUTSIDE of the negative terminal in the cart's charge receptacle via the Auxiliary contact in the "D" plug, so the missing insert isn't part of the battery sense circuit. In other words, the charger can sense the battery even though the negative charging wire in the output cable isn't connected, so the charger can turn on, but ought to immediately shut off because voltage out of the charger circuit will be at maximum since no amps are being drawn from the transformer. The cart's charge receptacle needs to be fix, but that isn't why the batteries are no being charged. Do a valid test on the diodes. |
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04-01-2020, 01:47 AM | #15 | |
Gone Wild
Join Date: May 2016
Location: Central Alabama
Posts: 1,041
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Re: Charger hums but shows zero amps
Quote:
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04-01-2020, 01:46 PM | #16 | |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: Charger hums but shows zero amps
Quote:
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