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Old Aug 26, 2007, 09:04 AM
Registered User
Oswestry, Shropshire. UK
Joined Jul 2007
48 Posts
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8ch JR combo failed range test today

Been flying 8ch setup with a JR9X2 (9303) and did have a couple of small glitches (even though range test was ok)when i first test flew my Knight 50 3D, thought i'd put it down to a low battery voltage.

Well today had some nasty glitches close in and quickly landed. Well it failed a range test. Battery had just been charged and the only thing i had changed recently was to flip the metal tx handle around. Couldn't work out the cause as to why the range test was so poor then in desperation pulled the module and reinserted it. This cleared the problem and the subsequent range test was great.

Guess i had a dirty connection between tx and module? Wonder if this solution might be of use to someone. Is there any sort of application i can smear on the pins to ensure a good connection? Conductive paste of some sort?
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Last edited by J3DI; Aug 26, 2007 at 10:14 AM.
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Old Aug 26, 2007, 09:25 AM
Custom Rekitter
Carlsbad, NM
Joined Jun 2007
116 Posts
Do you remove the module and reinsert it on a regular basis. Just wondering I have an 8103 and have had no problems doing that, YET.
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Old Aug 26, 2007, 10:13 AM
Registered User
Oswestry, Shropshire. UK
Joined Jul 2007
48 Posts
No, i leave it in but i recently removed it when i took the radio apart to rotate the metal handle.
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Old Aug 26, 2007, 09:43 PM
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gregw's Avatar
Hong Kong
Joined Nov 2002
1,183 Posts
I swear by DeoxIT ProGold 100 for enhancing electrical contact. I put this on all servo connections as well as the module/tx connector.

You might also want to open up the Tx and ensure that it isn't a solder joint that connects the PCB to the module connector that is now becoming bad..
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Old Aug 27, 2007, 12:14 AM
Registered User
Oswestry, Shropshire. UK
Joined Jul 2007
48 Posts
Thanks, i'll try that.
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Old Aug 27, 2007, 12:52 AM
Oopss. Oh well.
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In the tropics
Joined Jan 2006
3,617 Posts


Anyone tried MEC's silver paste for this kind of connection?
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