I recently bought a used Blade CP. I have been unable to fly it because there seems to be a problem with the electronics. Here is what I have done.


The 'elevator' servo will not respond. The servo itself seems to be fine, as I can plug it into other channels and it responds as it should. I have used a brand new servo with the same results. Upon plugging the battery in, it apparently centers itself as it should. If I cut power to the transmitter it randomly moves, so that leads me to believe it is at least recieving signals from that channel. I have tried a new 4-in-1 with the same results.

At this point I'm leaning towards the elevator input on the transmitter being faulty. Can anyone suggest any other possible solutions? Is it possible to service the transmitter itself, ie, replace the potentiometer(if thats what it is) on the elevator axis? I would appreciate any advice I can get.

I had some very limited time with my blade CP, I just bought the thing. I bent the drive shaft after crashing it, so it couldn't be trimmed properly, all of the electronics were working just fine, after replacing it, I no longer can get either motors to fire. The battery seems to be fine, all other controls work fine, all servo's are plugged in and working well. Does this thing have 4 in 1 problems? I hate to think, 260.00 into this so far I have to spend another 80 for that part, If so, I'm going to sell the replacement parts, cannabalize it and not get into choppers at all if this is typical in electronics with these, there really isn't much to them construction wise without that main component.

Hi

Hay JJackson are you shore that the servos are plugged into there proper spots on the reciver. After I rebuilt mine I had the same problem and it turn out that I had plugged one of the servos into the wrong spot, so you might want to check that.

Hay Espresso-Outfitters you may want to get ahold of E-flite and tell them that the ESC part of the 4-in-1 stoped working.

Espresso ,Make shure you have the throtle trim all the way down and idle up swithch is to the back when you plug it in,If not the servos will work but nothing else will .Is the light solid green?

RBCCONT looks like that did the trick, I "thought" I did every imaginable combination, thinking perhaps the 4 in 1 was confused due to murfy's law, electronics can be tempermental at times in any electronic device and I've had things do strange things in the past, some times impossible stuff that I was not able to reproduce. The ESC may have just needed a nap, hehe and this is all coincidense, hehe. Now that I walked into the local hobby shop and saw one of the employees demonstrating how to make your first flights, I won't try to fly this thing like an airplane, ie. I was trying to make it do too much at once and having it higher in the air "like you would do the typical plane on it's first flights" when you are supposed to just do very limited, low to the ground hovers and expand using baby steps. Glad I don't have to tear into the 4 in 1, I hate soldering and testing these little microboards.

Well I'm glad you got your problem solved in my thread, Espresso. Thanks for hijacking it.


AJ, yes, I have them plugged in the way the manual shows, unfortunately I'm still not getting anything. No servo, even new ones will work on channel 2. This is consistent with 2 4-in-1's, so I'm thinking it has to be the transmitter, unless there is something obvious that I'm missing somewhere.

He he JJackson, I didn't mean to hijack this thread, I just didn't want to post redudant topics in regards to electronic problems, I'll go away at this point and leave you with this.

Open up the transmitter, look for any burnt spots, do NOT touch the board with your fingers, if you have to, be sure you discharge your static, static electricity is a killer with all things electronic and are the hardest to pinpoint problems with since everything visually will look perfect. If you noticed any burnt spots, both on the solders, diods/transformers/resistors, etc. you know those odd things sticking out of the board, you'll have a good idea as to what is faulty. Run a digital multimeter through each set on the OHM setting to see if there is a break in the circut, also look for cracks in the board and soldering leads as well, this is how I troubleshoot electronics from espresso machines, to cars, anything residential and now rc's. You can also save yourself a little time by bringing it in to the local hobby store and plead with the owners to try a stock transmitter with it, you'll know immediately at that point it is the transmitter or not.

One good thing about bending the prop shaft, after replacing it, I found out that the original main shaft retaining collar was in the wrong place from the factory, no wonder it was so hard to trim, this shows me there are some quality control issues going on, so like all things mass produced, there will always be a few that get past the assembly line defective, just glad I took note as to the exploded view of the manual and did not rely upon putting it back together exactly the same way I took it apart, ie. you may be in the same boat with your's, don't rely upon what you see in front of you, rely upon the manuals exploded view.

Finally, the obvious, are you sure you are getting a full charge in the transmitter, perhaps it's battery needs replacement....

Good luck. [8D]

jjackson I would go into your LHS they always have a few blades in for repair bring your radio so you can swap out the crystal with a transmitter they have in there and you can see if its the problem that way,If thats it you hae to send it off for repair ,I recently bought real flight G3 and the right stick on the tx wasnt working ,Sent it offto GreatPlanes and they replaced it,the point I am making is yes the tx sticks go bad .
You can probably pick up a new one on e-bay cheep if You arnt still under warantee ,In fack I will be putting myne on there soon (Just Bought a futoba 7chp on there for $110,any way good luck with it

oops doubble posted it