Esky cp2 servo issue

[bigdumbdane]

I got a esky cp2 recently, and it came with a extra cnc rotor head and "super skid" kit.

I played with it out of the box, and hopped around the yard, trying to figure out the hover thing - I did have some mild collisions, broke one pair of foam blades, got some scary hovers in.
I then put on the CNC head, and got wise, started with the first battery on RADD's school of rotary flight...
It ran fine for 1 more battery, but has some wobble. I decided to put on the "super skid" kit... put that on, and only had to disconnect the motor from the 4-in-1 and then re-attach it.
When I powered it back on, I could hear the sound of a servo struggling -
Then I noticed the front servo (elevator pitch I think) was pointing at 12 o'clock, as opposed to the normal 3 o'clock, forcing the swashplate to lean to the back.
I can only get it to go back to normal (3 o'clock) by pushing the right stick all the way up.

I didnt disconnect any of the servos from the 4-in-1, just that one motor plug on the other side.

Anyone know what may have caused this? Did I prang my 4-in-1?
Any suggestions?

[Raysun]

Unplug both motors, turn heli on, center all sticks, and make sure servo arms are horizontal. If they are not, try unscrewing the arm and reattaching. But 4:1 needs to be on, and all sticks at center including throttle. That a basic first step in any heli setup. Also check that blade pitch is zero, ie. look at blade end-on, it must be parallel to the flybar.

The stock servos are basically S75's with soft gears that strip easily. So might have stripped a gear even with rough handling. 4:1 will not cause a servo to mis-align. Might be able to buy replacement gears for the S75 but they are cheap anyway. Thats where I would look. Hope this helps!

Ray

HBCP2, HB King, CPPro, HDX450SE

[bigdumbdane]

No luck.
I undid the servo arm, it still buzzes once it gets power.
I unplugged it from ch2 and swapped it with ch1 on the 4-in-1. The front servo still buzzes, the other servo in the back centers, so I assume it is not the 4-in-1.

Does this sound like something I could fix on the servo, or should I just pony up for a new one?

The wiring all looks good - not sure if you can take these little things apart or not.

[RCcarguy]

If the trim is centered on the TX the servo is most likely history. It doesn't take much to trash the stock servos, good whack of a rotor blade against a solid object will do it.

After replacing all of them on my CP Pro one by one with leftover Spektrum S75's (same servo as stock Eflite and equally crappy), I replaced all of them with Hitec's, so far so good...

[bigdumbdane]

I just watched the servo repair video:
http://www.helifreak.com/viewtopic.php?t=25146&highlight=servo+repair

I took my servo apart, everything looked good - I put it back together again, and it worked!
Then I tested it to full movement, and when I pushed the right stick all the way down, it freaked out on me again and stuck at 12 o-clock and started buzzing. Guess I am back to where I started.