A few weeks ago I was having glitching problems with several of my planes. One plane is a search and find problem, three planes is a send the radio into Radio South!! Tony sent me back my radio and all of my planes are now range checking just fine but one of them was still glitching?? OK, now it's a plane problem.
All the control surfaces were going nuts about every 20 seconds and my on board GEM 2000 was flashing odd. The first thing I did was unplug the switch and just plug the battery into the RX, SHAZAM!!!!! Plane was acting just fine. First time I have ever had a heavy duty JR switch go bad?? I replaced it then opened up the bad switch, it had a bunch of dirt and crud in it. I fly on a dry lake bed so it isn't a big surprise.
I cleaned the switch with QD Electronic cleaner and it's working just fine now but I wouldn't ever be able to trust it so I can now be a kill switch on one of my gassers.
This post is just an FYI. Most the time you are having problems like mine it is in the switch more often then the TX or servos. I did have some extra RXs on hand if it wasn't the switch but sometimes I just get lucky.

Very interesting. Last week I switched my Extra JR switch "on" and nothing. Switched it back and forth, on/off and it came on. On the way back from the field I went to my LHS and bought a new JR switch - because 10 years ago I had an intermittent Futaba switch that resulted in a few crashes until I figured out what was going on. Anyway, I just tossed the JR switch that was acting up. I've done some circuit board design/manufacturing and even though I've flown with my own soldering in a Futaba radio, a bad switch gets the garbage can. But kudos to you for taking the time to fix it.

Moral of the story is, switches go bad.

i use two of these http://www3.towerhobbies.com/cgi-bin...?&I=LXLZK0&P=7 in my planes. that way if one of them fails you still have the other one, and they are much cheaper than other switches. a little soldering is required if you want it to fit w/ your standard battery. cut off the small switch connector, cut off your battery connector, solder your battery connector(to make a charge port)/switchs/battery together. takes 5min and is cheaper and safer than other switches because you have 2 of them.
i also make my own yharnesses/ servo extension. w/ this http://www3.towerhobbies.com/cgi-bin...?&I=LXPWC1&P=7 or this http://www3.towerhobbies.com/cgi-bin...?&I=LXN661&P=7
then use some heat shrink tubeing over the solder connections. and thats it. much cheaper and less likely to fail.
look at the price of servo extentions http://www3.towerhobbies.com/cgi-bin/wti0093p?&C=MHC
much cheaper to buy the wire/ cut the servo wire/ and solder some more on. i can do 25+ servo extensions for the price of 1 extension

I don't use Ys or small switches in any of my planes for my own reasons. I make up my own extensions also but I like 16aug wire instead of 20 or 22 aug. There are reasons for the price difference for RC parts and equipment.