I'd bought a 9100 from motorsandrotors and phoned them when this problem was shown on RCU-I think it was Dave I spoke with and he said he'd contacted Horizon UK and told them of the problem-they looked into it and they sent him this cure.
I'm guessing it must have come via Horizon in the USA as they are a linked company.

Good to see the British end working well with M & R and Horizon UK.

Matt

Yes. Mine does the same.I believe it is balancing the battery voltage by using the highest voltage first.

YAP,
I JUST OPEN UP MY NEW AR9100 SWITCH AND THE RED CENTER WIRE WAS TUTCHING THE BROWN WIRE POST. DEFINATLY A SHORT BETWEEN THE RED AND BROUN
WIRE. TANKS FOR THE REPORT ( SORY ABOUT THE A-4 ) . I DID NOT OPEN THE MAIN POWER SAFE UNIT TO SEE IF THE RED CENTER WIRE CONNECTED TO ANYTHING
INSIDE OR JUST FLOATING THERE ? .I PEELD BACK THE RED WIRE OUT OF THE SWITCH AND CUT. THIS IS BAD .
I AM PLANNING TO USE THE SYS. IN MY NEW BOBCAT.
THANKS
ISAAC

Matt and all

We contacted Horizon when the problem was flagged up, they acted quickly with the fix-RCU working at it's best...sorry someone had to find the problem first

Dave Wilshere

So is the issue with the switch, rx, or both! ?

Hi,

I would encourage anyone with an AR9100 to review the bulletin on the web, and modify the switches to eleminate any chance of having a problem related to the switch.

http://www.spektrumrc.com/Articles/A...ArticleID=1777

Have Fun,
David

Thanks for the heads up.

Just installed a new AR9100 system in my TJ F-16 this morning (after checking the soft switch, I cut an additional 1/8" off the middle wire). I ran it through the binding process, and all I can say is WOW, what an easy process.

I need to locate the 3 receivers somewhere in the fuse now. I have one (port A) located on the component tray, wires heading outboard and laying flat, antenea pointing nose/ tail. Where do you guys recommend the others be located?

Thanks!
Mark

I have installed a 9000 in my little Savex L39 which meant everthing had to go into very small cockpit. I decided to put one remote in the wing, just inboard of the MLG and made up an extension lead with an aileron cord which is connected at the same time as the aileron and flap servos (I reversed the plug layout to avoid an incorrect connection). That remote consistently shows the lowest antenna fade count of the 3 receivers. Hope this helps.

Just deciding how to install the 9100 in my BobCat XL with all 3 remotes attached.

My 9100 had bare red wire too but was not touching the other wires in the switch.

All my Spektrum stuff is working flawlessly, still not a single frame lost in flight.

Regards, David Gladwin.

Mark -

I try to locate all my satellites so that they are at right angles to each other in all 3 axis - one with antennas oriented longitudinally, one with antennas laterally, and the third has antennas vertical. I usually have one satellite on the fuse floor, one on the fuse side, and one up in the nose, trying to keep away from any large metal or liquid (fuel) objects. So far so good, the frame loss and fade rate has always been between 0 and 20 (40 is the highest fade and/or frame loss count I've ever seen) and no holds in maybe 100 Spektrum AR9100 and AR9000/Spektrum 10X TX module flights to date (Boomerang XL and JL L39).

I've added a couple of steps to my range tests - in addition to the usual 360 degree rotating ground range test, I now have a helper pick up my jet and orient it so I check with the top and bottom of the jet facing the TX, just to make sure that at least one Rx 'sees' the signal in these attitudes. No problems so far.

Barry

I haven't checked my post in awhile, but it seem like you guys already have the answers. I'm still waiting on a reply from Horizon on my fried AR9100. I should have just looked back here. Since they are posting the fix on the website, I guess there should be a new AR9100 waiting for me in the mail this week.

Another question related to this issue. When I fried mine on the first time I used, it I was using a single 2000 mah Nimh pack. The short had enough power to burn a hole clear through the bottom of the case. Do you think this damage that battery pack in any way? Maybe I should ask Horizon for a new pack also.

I didn't get any answer to my claim from Horizon neither. Not a single word. I'm looking around to see if any other people had an issue regarding this switch failure.