Factury HH brushless ESC dead

[hookedonflying]

Has anyone else had this problem? I noticed smoke on a light crash yesterday. Now it seems like this fet has something to do with the motor, because the motor runs with no power. At first I thought I fried the motor, but upon further investigation, I noticed the esc was fried. Maybe I should replace it with an XP-3A instead. Thoughts? I should maybe call HH and see if they will send me another one from their out-of-stockpile. lol It's only a month old, for crying out loud! What would cause this?

[CrashyCrashy]

Well the crash may have caused it. I think you answered your own questions.

CrashyCrashy

[JonJet]

I'd venture a guess, but you've already stumbled upon what might have caused the smoke...

Although they have a good amount if built-in resilience, crashing is not the best treatment

[JonJet]

Originally Posted by CrashyCrashy

Well the crash may have caused it. I think you answered your own questions.

CrashyCrashy

+1

Dang, you beat Me to it, Crashy

[hookedonflying]

Originally Posted by CrashyCrashy

Well the crash may have caused it. I think you answered your own questions.

CrashyCrashy

Well, given your name, I guess you're the expert.

Why would crashing cause that to fry? Seems odd, plus, I hope I don't have a problem that goes unnoticed, so that my replacement immediately gets fried upon first use.

I was hoping someone would know exactly what that fet does, so I would maybe know what caused it to fry. Doesn't look like any wiring has issues or breaks. Main board is fine. It is flying now with stock.

[CrashyCrashy]

Originally Posted by JonJet

+1

Dang, you beat Me to it, Crashy

Lol Sometimes I get to lead..... if I get out of bed early enough.

Originally Posted by hookedonflying

Well, given your name, I guess you're the expert.

That statement is absolutely down right... true.

CrashyCrashy

[BladeScraper]

Originally Posted by hookedonflying

Why would crashing cause that to fry? Seems odd, plus, I hope I don't have a problem that goes unnoticed, so that my replacement immediately gets fried upon first use.

with motors and ESC's, its sometimes the excess load that happens when you crash, it causes excess current draw and sometimes fries things. Other than that, I have no idea.

[hookedonflying]

Originally Posted by BladeScraper

with motors and ESC's, its sometimes the excess load that happens when you crash, it causes excess current draw and sometimes fries things. Other than that, I have no idea.

I suppose its possible that I didn't hit TH quick enough. It wasn't a hard crash, though. Maybe I should replace it with the XP-3A.

[BladeScraper]

thats probably a good idea, performance will be better.

[hookedonflying]

Originally Posted by BladeScraper

thats probably a good idea, performance will be better.

...if I can ever find it in stock anywhere.

[BladeScraper]

haha, very true... they are very popular indeed. MegasMicros has them

make sure to choose BLHeli Main Code.

[hookedonflying]

Hey, I got an answer from Horizon Hobby today on this. Direct quote: "We are not sure why the boards are burning up. We will send you a new one." I'm really glad they are replacing it. Sounds like I'm not the only one with the problem. Anyway, thumbs up to Horizon Hobby for backing it.

[hookedonflying]

New ESC came today. Put it in, and interestingly there was not "sing song" tone sequence. I thought they must have changed it. Powered up and it would barely lift off the ground more than about 2" before returning to the ground. Motor dead, too? Called HH, and now they are sending a new motor, too. Thanks for the excellent customer support Horizon Hobby. Love those guys. They have always supported their products well for me.

Interesting fact I learned while on the phone with them: The MOTOR is what makes that song tone. Weird. I didn't think that was possible. Still can't figure it out.

[headless_monkeyman]

Originally Posted by hookedonflying

Hey, I got an answer from Horizon Hobby today on this. Direct quote: "We are not sure why the boards are burning up. We will send you a new one." I'm really glad they are replacing it. Sounds like I'm not the only one with the problem. Anyway, thumbs up to Horizon Hobby for backing it.

It took a month and a half, and is arriving next week but I am with you 100% on that sentiment.

@BLADESCRAPER I find it funny that you come up with the answer to my question the day after I get my problem solved ( I have been waiting for HH to deliver my replacement ESC since March 6th), but I am thrilled none the less. I am going to order a couple of spares and toss them into a drawer. I would think about the 10A, but it looks heavy and I don't like having too big an esc. Since an ESC only knows "on" and "off" it will at 75% throttle for example send what, for the same head speed as a 3A you'll be getting 10A to your motor 25% of the time instead of 3A 75% of the time. That is a lot of heat.

I think my math is right. No coffee yet, brain damage, and I got the formula from fixed wing

Cheers!
Kurt

[BladeScraper]

no, the ESC doesn't put out 10A always and just turn off and on... 10A is just the most that it can put out without getting too hot. You don't need a 10A ESC, the XP-3A is big enough.