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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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Thread Tools | Display Modes |
04-30-2018, 05:46 PM | #1 |
Not Yet Wild
Join Date: May 2013
Location: Hawaii
Posts: 40
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DVM Failures
I put one of Scotty's DVMs in an EZGO PDS cart a while back at it failed. First it had wildly erratic readings from low 20's to actual voltage at any given time. I asked Scotty about it at the time and he suggested checking the wiring which I did. Not only did I have continuity but my my hand-held DVM read pack voltage at the meter connections. Eventually it failed completely so I got a new one.
The new one worked great for one day before failing completely just like the other. I thought it might be a voltage spike or due to lots of rain (cart lives outside). Scotty tells me they can handle up to 100V and they are totally waterproof. I tested the failed DVMs on another cart and they are truly dead. Both carts have the same type of wire from the battery pack to the meter. So I put it to the experts here... what could be killing my DVMs? Last edited by MauiHoss; 04-30-2018 at 05:47 PM.. Reason: Additional info |
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04-30-2018, 09:38 PM | #2 |
Over This Interview Is...
Join Date: Jun 2012
Location: AZ
Posts: 17,449
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Re: DVM Failures
Perhaps the cart solenoid does not have a clamping diode on it, and constant voltage spikes are hurting them.
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05-01-2018, 07:40 AM | #3 |
Just Gone
Join Date: Sep 2015
Location: North Carolina
Posts: 3,549
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Re: DVM Failures
Could be just bad DVMs. I too have got one from Scotty and it failed after 18 months. Same as yours, erratic readings then one day I go to ride the cart and notice the DVM reads 20something... I freak for second thinking I left something on and killed my batteries. Check it with my hand-held and the pack reads above 53V.
I ordered a new digital VM, same as the one Scotty provides and its still working almost a year now. Maybe you got a couple of lemons. |
05-01-2018, 10:15 AM | #4 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,417
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Re: DVM Failures
I do get one failure in 500. There just are not that many lemons that one person can get 2 bad ones?
GCtech may be onto something. |
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