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Old May 15, 2013, 11:26 PM
Registered User
New Zealand, Waikato, Hamilton
Joined Jul 2011
750 Posts
Question
Switch Jacks Issue

I recently installed some switch jacks in my new gliders - bought them from a reputable supplier....

they work - as far as they cut power off when the jack is installled and swith on when removed - the issue i have is that I cant charge through the connection outside the fuse. my charger shows "low voltage" then "conncetion break" and shuts off

If I bypass the jack - the batteries charge fine.

I have other jacks the let me charge through them

Any ideas on what could be the issue - what I should check?

Thanks
Wynn
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Old May 15, 2013, 11:54 PM
Yes..ok..maybe..lol.....
Tucson Avra Valley, Arizona, United States
Joined Jul 2004
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Yes..........use an ohm meter to verify that there is not a short between the center and outer connector of the switch jack..........
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Old May 16, 2013, 12:05 AM
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New Zealand, Waikato, Hamilton
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Quote:
Originally Posted by shhhhh! View Post
Yes..........use an ohm meter to verify that there is not a short between the center and outer connector of the switch jack..........
I'm an electrics neophyte - how do I do that?

I have an ohm metre I think
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Old May 16, 2013, 12:12 AM
Throw it like you hate it
RCPC's Avatar
United States, CA, Castro Valley
Joined Apr 2007
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Is your switchjack wired directly to your battery or is there a regulator between the battery and the switchjack?
Paul
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Old May 16, 2013, 12:52 AM
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New Zealand, Waikato, Hamilton
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Originally Posted by RCPC View Post
Is your switchjack wired directly to your battery or is there a regulator between the battery and the switchjack?
Paul
Plugs directly to battery. 1s lipo
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Old May 16, 2013, 03:21 AM
a.k.a. Bob Parks
Glendale, AZ
Joined Jun 2008
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Is your charger set for 2S? That would shut it down.

BP
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Old May 16, 2013, 04:09 AM
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New Zealand, Waikato, Hamilton
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Nope. 1s. Charges sweet if i bypass the jack
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Old May 16, 2013, 05:01 AM
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Dani123's Avatar
Israel
Joined Jan 2005
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Just a suggestion here, What is the voltage measured on the jack when it is plugged in?
Maybe your SJ is designed to disconnect the circuit only...
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Old May 16, 2013, 09:40 AM
ET
eteet's Avatar
United States, DE, Hockessin
Joined Apr 2006
661 Posts
Quote:
Originally Posted by gtrbaby View Post
I'm an electrics neophyte - how do I do that?

I have an ohm metre I think
Get your ohm meter and set if to ohms. Put the positive probe on the tip of the charging jack and the negative on the upper part of the jack. The reading should be zero. If the needle/display moves AT ALL you have a short and need to fix it. The short will slowly drain your lipo, which kills it.

Ask me how I know.

Eric
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Old May 16, 2013, 11:54 AM
Combat: You're doing it wrong.
chewbaccah's Avatar
United States, UT, Layton
Joined Sep 2009
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Quote:
Originally Posted by eteet View Post
Get your ohm meter and set if to ohms. Put the positive probe on the tip of the charging jack and the negative on the upper part of the jack. The reading should be zero. If the needle/display moves AT ALL you have a short and need to fix it. The short will slowly drain your lipo, which kills it.

Ask me how I know.

Eric
I am so glad you said that. I have been having that problem for a while. I can charge and fly, but the battery slowly drains. Time to check it over carefully...
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Old May 16, 2013, 03:03 PM
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New Zealand, Waikato, Hamilton
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Quote:
Originally Posted by eteet View Post
Get your ohm meter and set if to ohms. Put the positive probe on the tip of the charging jack and the negative on the upper part of the jack. The reading should be zero. If the needle/display moves AT ALL you have a short and need to fix it. The short will slowly drain your lipo, which kills it.

Ask me how I know.

Eric
oh - my meter is digital - and has about 5 settings on the ohm side - do I set it to the lowest ?

I'm a bit lost on it really - I will try and figure it out
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Old May 16, 2013, 03:18 PM
a.k.a. Bob Parks
Glendale, AZ
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Quote:
Originally Posted by gtrbaby View Post
oh - my meter is digital - and has about 5 settings on the ohm side - do I set it to the lowest ?

I'm a bit lost on it really - I will try and figure it out
Shouldn't matter, but the higher numbers will settle down quicker. On an Ohms setting, touch the probes together & it should read Zero, that is how the meter sees a short. Not touching it should be at 1.0

BP
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Old May 16, 2013, 03:23 PM
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sweet - so if it reading something - theres an issue - gotcha.
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Old May 16, 2013, 03:37 PM
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United States, WA, Seattle
Joined May 2011
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Quote:
Originally Posted by bbbp View Post
Shouldn't matter, but the higher numbers will settle down quicker. On an Ohms setting, touch the probes together & it should read Zero, that is how the meter sees a short. Not touching it should be at 1.0

BP
Probes touching should indeed read zero, but probes not touching probably won't read 1.0 - depending on what range the meter is set to, that would indicate 1 Ohm, or 1 kiloOhm, etc. resistance which is not what you'll have with the probes not touching (you should have infinite resistance). It should read something like "OF" or "out of range" or similar depending on your meter with the probes not touching each other.

-John
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Old May 16, 2013, 03:43 PM
a.k.a. Bob Parks
Glendale, AZ
Joined Jun 2008
2,237 Posts
I just have one of those freebie Harbor Freight $4 meters!

BP
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