ESC Up energ gets hot help!

[Mda1701d]

Hello all again, here's the latest problem!
After a tail servo bail out on the blade 400, I found the servo was getting red hot. Tried a new servo first, but it did the same thing. Align 750 gyro set to digital, so wasn't that. I had to put a new esc in the heli a while back, but all has been fine for a few weeks. Testing this on the bench, with t hold on, no inputs, the esc gets very hot within a minute or so. It's a cheap ish JPEG energ pro, didn't used to get hot after a fight, so I wonder if it's gone up the spout? Could it be over voltage on the servo causing the overheat? The servo is a hsg508 hitek.
Opinions would be great, thanks!

 

[Mda1701d]

Mmm, further info, just plugged in original eflite esc, and same symptoms, it gets damn hot within a minute. All functions work incidentally during this time, although it gets hot with no inputs.

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Think I may have found the prob, unplugging the tail servo stops the heat, so I guess it's knack erred!

 

[Lee]

So is it the servo causing the heat problem, or is it something else causing the servo to die, and then causing the heat problem????
Theres the million dollar question.

 

[Mda1701d]

LOL, thanks \Lee.
In fact, its a £16.00 question, as I've just ordered Align tail servo to replace!!
I'll be ready to unplug quickly if it gets hot !!!!

 

[Graham Lawrie]

I was thinking the Capacitor initially on the ESC as I had the same. Lee has a point, there is a mechanical issue causing the electrical fault, whether servo or tail bind

 

[Mda1701d]

Hi Graham,
Not a mechanical issue I think, although it was in the air when it first overheated, all tests after have been on the bench, with not even a servo horn fitted. The tail mechs are nice and smooth, and all symptons are the same with another esc.
I'll report when new servo arries! Thanks all.