We have here a Hotel 1.0 oilpan 8/19/2010, on a 2560 APMega. :>(
It has worked fine for a few flights on a plane, and have been setting up now in a 450 heli. It seemed to be working correctly until tonight...
Have done only a few run ups on the ground, getting gains adjusted to get good yaw tail hold. Got the tail holding good, started to lift a little more and then it almost flipped over! Now on startup, the attitude display starts level and then flips over to one side, showing approx 90 deg roll. It's like it had a few beers and fell off it's stool..... Then I noticed that stabilization swashplate travel was no longer working for roll axis at all, and pitch axis was reduced.
It seems to do same behavior either in heli over telemetry, or with APM/Oilpan removed and plugged direct to usb.
The Z axis is maybe normal. but the X and Y are not making sense to me? The APM was rotated back and forth 180deg through pitch and roll axes. The X changes only 1-2 counts, and the Y changes a little more, but I think not enough.
Does this look like a solder joint issue maybe I'll look close for it and maybe fix? Is this just what it looks like when the AD335 has retired? Might I send this for repair? Vibration induced failure?