Right gimbal calibration?

[hangerrat]

Good day,

I just received a Turnigy 9X from HK and installed smartieparts, flashed to ER9X. But my right stick (AIL/ELE) does not move fully in the AIL direction (side to side). The 'ball' is centered with the sticks untouched, but if I move the stick to the left or right, the ball never goes fully over to the side of the calibration box. It stops about a 'ball's width' away from that vertical line on either the left or right side of the calibration box.

I have done the standard calibration numerous times, no changes. My left stick is working just fine.

Is there another calibration method I should try?
Is there something mechanical I can do inside the radio?

Thanks for any input.

[Rob Thomson]

Seem to be getting allot of radios coming out the factory with issues on the pots at the moment? Maybe yours has the same problem.

[hangerrat]

It is frustrating. I've had four (4) 9X radios.

#1 - er9x - sticks needed recalibration very often. I sold it for parts
#2 - er9x - works great! I fly with it every day
#3 - would not even power on, had to send back to HK for refund
#4 - er9x - right stick will not move 'the on screen dot' to travel the full range of aileron control

I certainly like the radio/price point, with ER9X. But this is just frustrating. I'm starting to feel like Vegas is a better gamble....

[Kilrah]

Yep. Can't wait to have better radios to run our good firmwares on.
Those who purchased them from other sellers than HK under the other brands (usually for $70-90) seem to have fewer duds...

[hangerrat]

>>Those who purchased them from other sellers than HK under the other brands (usually for $70-90) seem to have fewer duds...

That is a good data point, I'll start looking that way.

[Kilrah]

Oh and when you get a defective one - keep it, always good to have a few spare parts for the others

[ShowMaster]

It is frustrating. I've had four (4) 9X radios.

#1 - er9x - sticks needed recalibration very often. I sold it for parts
#2 - er9x - works great! I fly with it every day
#3 - would not even power on, had to send back to HK for refund
#4 - er9x - right stick will not move 'the on screen dot' to travel the full range of aileron control

I certainly like the radio/price point, with ER9X. But this is just frustrating. I'm starting to feel like Vegas is a better gamble....

If #4 tx stick pots not moving the whole range what happens if you gently push on the pot circuit board while moving the sticks? Does it work again?
Hopefully it does and that may mean you can fix it as we've been discussing latly.
I'm thinking that maybe these TXs were mode 1's and some dumb thumbs at HK or the warehouse is making mode 2's out of mode 1's and breaking/damaging the pots doing it?
The small pot board can put a lot of pressure on the pot wires and the crimp connection to the pot resistive element.
The fact that some also have a hairline crack is also a clue to excessive pressure being put on the pot(s).
I can't believe that's all from the factory.

For anyone doing any work on their tx, DON'T push hard on the pot circuit boards! It's like a big pry bar to the little pot connections. The pot element connections used to have a dab of conductive silver paint/epoxy on them. To my eye, not any more. I think it may save a lot of $ in silver or what ever the conductive paint was?
Just my thoughts on why so may bad pots this year?
SM


ShowMaster
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