Hobbywing EZRUN-MAX8-V3 ESC not working

[RichBoud]

I have a Kraton EXB with an EZRUN-MAX8-V3 ESC. My batteries got wet and one of them failed (my bad). I dried them out and managed to get the affected one working again. I spotted what looked like white lithium oxide inside the battery and decided that it was safest to bin it. Lithium being highly reactive with water and all.

 

So I plumped for a new battery. I am now using one new and one old battery. My charger/tester shows all the cell voltages as being OK, as with the internal resistance, i.e. the old battery matches the brand new one. I'm running a discharge tested on them now and they seem fine.

 

The Kraton will not power up. Normally when I turn the ESC on the motor and ESC will 'beep'. This is not happening now. The red light on the switch now flashes. I cannot find a mention of the switch LED in the instructions, only the LEDs on the ESC itself.

 

I have put the programming card onto the ESC and it does not light up. However, if I disconnect the car batteries from the ESC and power the programming card externally, then the programming card works. I can check all the ESC settings and they match my choices.

 

I have powered the radio receiver externally too with the ESC disconnected. I can control the steering using the radio, as normal. Incidentally, I tested the servo and it was fine (it is also brand new).

 

With the ESC reconnected it powers and the radio still powered externally, then the ESC does seem to start and the green light flashes, the fan comes on, the steering works. Unsurprisingly, the motor does not run, because the supply is only 5V.

 

So, what am I missing?

 

• When the battery popped did the ESC pop too?
• What does the flashing red switch light mean?
• Any other ideas.
• Commiserations welcome too... 

 

I'm truly hoping the ESC is OK or can be fixed.

 

Rich

[Bajadre]

sound like the ESC needs recalibrating  Rich 

https://www.youtube.com/watch?v=RRYwr14FwjE

Edited January 31, 2021 by Bajadre

[Tug]

If re-calibration doesn't work, it might be the built-in BEC is dead. If so, you can always run an external BEC. 

[RichBoud]

1 hour ago, Bajadre said:

sound like the ESC needs recalibrating  Rich 

https://www.youtube.com/watch?v=RRYwr14FwjE

Unfortunately, I can't get it into recalibration mode.

 

It is looking as though there is something wrong with the high power/voltage converter. The low power stuff works, just not the high power stuff. I might have to speak to the shop.

[Livefast123]

Did you ever find the problem as my Max 8 is doing the same thing, albeit my batteries are fine. 

[SiJohnson]

Picking up on this thread, hoping someone can help. 

 

I've just installed a Hobbywing MAX8 into my son's Traxxas E Revo, but having trouble calibrating it. It's plugged into channel 2 (3rd slot) on the TGi receiver.  As per the instructions I hold the set button, then turn the ESC on which makes the red led flash and beep, but when I press it again to set the throttle limits nothing happens, no green light. 

 

Any suggestions??

 

Thanks

[Tug]

Holding the button long enough?

 

Pressing the button between each beeps?

[SiJohnson]

2 hours ago, Tug said:

Holding the button long enough?

 

Pressing the button between each beeps?

Thanks Tug. Yeah, I'm holding it long enough for it to start beeping and flashing red. When I try to set the neutral point, the MAX8 doesn't flash green as it's supposed to, so not allowing me to set end points

 

Thanks

[Tug]

You might be entering programming mode, try holding for a shorter time?

[SiJohnson]

25 minutes ago, Tug said:

You might be entering programming mode, try holding for a shorter time?

Made that mistake at first, but doing it correctly now....I think!

[SiJohnson]

1 hour ago, SiJohnson said:

Made that mistake at first, but doing it correctly now....I think!

Still no luck tho

 

[Tug]

I'm out of ideas, especially without it in front of me. Sorry. 

[SiJohnson]

I've just tried swapping channels on the receiver, so ESC in ch1, steering in 2. The wheel is working the motor, but the throttle also works the motor not the steering as you might expect. Would that suggest the receiver is faulty?

 

[Tug]

Maybe the ESC doesn't like the Traxxas Rx? You're pushing the button on the ESC, right? Not on the Rx?

[Kpowell911]

The Traxxas RX has two channel 1s for dual steering servos, you sure youre in channel 2?

[SiJohnson]

7 minutes ago, Tug said:

Maybe the ESC doesn't like the Traxxas Rx? You're pushing the button on the ESC, right? Not on the Rx?

Yeah. Modelsport recommended and supplied, so should work?

 

[SiJohnson]

8 minutes ago, Kpowell911 said:

The Traxxas RX has two channel 1s for dual steering servos, you sure youre in channel 2?

Yes, triple checked that one

[Tug]

Any other radio gear you can plug in to for testing?