I need MAJOR Warrior help
 

My BK Warrior 9920 is currently not working. When I give it throttle, the motor stutters but doesnt go anywhere. After about 30 sec of throttle with just a little progress, the ESC, connections, and motor were HOT. Help!


JB

It once functioned properly?

you can move the car/motor with ease?

Yea, I took it out many times and it was great. I actually tested both of my feigaos and both used to work and now both do the same thing. I just cleaned out the entire savvy drivetrain and it rolls exceptionally well. It was fine and then it didn't run the next time I took it out.


JB

check all your connections. sounds like you might have a bad motor or battery connection.

Both the Feigao 540 10XL and 380C6T were working perfectly before. I just replaced Tx and Rx batteries. I tried reprogramming it 5 min ago and it wasnt beeping at all. I am using Deans connectors for the battery (GP3700) and 5.5mm gold connectors to both motors. Will it void the warranty if I take off the heat shrink to look inside at the circuitboards for problems?


JB

i believe so.

Hmmm... won't be doin that then. Any troubleshooting for a non-programming 9920?


JB

What do you mean with non programming?

check if one of the three 5.5 plugs isn't loose, if you bend the plugs somehow, the plug itself might deform and cause a loose contact. (can be fixed by widening the plug a bit)
It could be a receiver/BEC/humppack problem too..

Nonprogramming as in it doesn't beep when I plug it in w/o the jumper on. It is supposed to beep to say it recognizes neutral. The Rx pack is 4 AA batteries in a little holder that came w/ my MX-3. Just checked the gold connectors and all connections are in great shape. I also just tested the Rx with a Duratrax intellispeed 12t+ and Orion Revolution 13x2 and I had good throttle control. Its not the Rx. Bummer... that woulda been a heck of a lot cheaper fix than an ESC.


JB

Have you got a decent rx pack you can test with the 9920? How many cells are you driving and can you confirm you didn't removed the BEC jumper instead of the programming jumper?

No, the AAs are the only rx pack I have. They are new, though, and should be fine. I can't even find the BEC jumper. The programming one is the red one and that is the one I removed. Where is the black BEC jumper? I was previously running 18 cells until some of the heatshrink failed and some cells shorted. I took those battereis out and ran 3-4 12 GP3300 cell runs through my 10XL and it was working fine. I have been testing it with the suggestions in this thread with 6 GP3300 cells and the 380C 6t.


JB

The bec jumper is a little bit further under the heatshrink.

Try programming it once without the rx pack, and the 6-12 cells because the onboard BEC is still enabled. (if it works) the rx pack you are using now sucks. You need to get another one, perhaps the problems started with changing the batts?

It would have been a good thing if you removed the BEC jumper with the 18 cells though.

Well, I got to the BEC jumper. How do they expect you to find that? It was well covered by the heatshrink and behind a cap. O well. I took it off, put it back on, tried different combos and eventually was able to get a the 540 ramped up to a decent rpm. Then it didnt work again. It worked differently depending on how I held it, so I'm thinking some connection inside the ESC is bad. Any suggestions on how I could test em all? I've already had to peel some of the heatshrink back to get to the jumpers, should I go ahead and peel it back to get to the batt and motor wires?


JB

You can sent it back to Mike, if he sold it to you.

Did you used foam padding between the ESC and the part you mounted it to? Did you tried it already without the RX pack (4AA cells deserve no credit at all)

No, I didn't use foam padding. Was I supposed to? And yes, I tried it without the rx pack. I did buy it from Mike.


JB