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Oct 21, 2003, 12:22 AM
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Bangkok, Thailand
Joined Aug 2003
482 Posts
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What's WRONG with my new TX??????
 My TX was about a month old. I've just tried the control throw of my spitfire. I add some down elevator trim, it was too much so I press the up trim. ????? Nothing happens. I press it again !!!!!!!!!!!!!!!!!!!! OH NO!!! The up trim is totally dead!!!!!!! I tried to put some up trim to other model memory. No response .I am so sad now since I had not been flying since Friday. I plan to fly tomorrow with my new mod on the spitfire. Anybody has any idea on this?????? Am I mess up with some program??????? I am so sad now...... I think I wait several weeks for that
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Oct 21, 2003, 12:24 AM
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San Jose, Ca.
Joined Jan 2002
5,758 Posts
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Check your servo throw make sure that the arms are centered. BTW: What type of TX do you have?
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Oct 21, 2003, 12:28 AM
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Bangkok, Thailand
Joined Aug 2003
482 Posts
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JR 8103 airplane version.
It is not the servo, it is the TX Usually it will display how much trim I have, but can adjust it only one way (down elevator only). All other digital trim (rudder and aileron) are fine Any suggestion? |
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Oct 21, 2003, 12:30 AM
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San Jose, Ca.
Joined Jan 2002
5,758 Posts
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Have you tried it with other rx and servo to see if it works? If your Rudder and elev is fine. try the servo, just to make sure.
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Oct 21, 2003, 12:35 AM
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Bangkok, Thailand
Joined Aug 2003
482 Posts
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The trim on the display as well as the servo doesn't move
I tried swap the channels, the servo works fine. WHERE IS THAT DARN RECEIPT??? |
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Oct 21, 2003, 12:39 AM
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Tacoma,WA USA
Joined Jun 2001
3,749 Posts
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Gotta be the switch contacts in the 'up' trim button then.
If it's a separate wired component, maybe a broken wire. Pop the cover and take a look-see. |
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Oct 21, 2003, 12:42 AM
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Bangkok, Thailand
Joined Aug 2003
482 Posts
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I agree but I don't have parts.
There is a separate PCB for each digital trim switch. The soldering seems to be fine. I didn't check the contact on the switch yet (I've just broke my fuse in the DMM yesterday. What a bad luck!) |
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Oct 21, 2003, 02:23 AM
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Bangkok, Thailand
Joined Aug 2003
482 Posts
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PROBLEM FIXED:
Thank you everybody. The up-elevator trim switch is OK, however, there is a piece of plastic that suppose to push the switch when I press up trim that is not doing its job. I tighten the screw and it is working fine  So, I will definately fly tomorrow 
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