grundrauschen
Member
I just investigated a failure on my newly bought HK Spec FPV250.
This is what happened:
I successfully ran through my first battery, fiddled with the settings, hovered it a couple of times. All seemed great. Then I disconnected the battery and switched to the next - nothing happened. No LEDs, nothing. So I quickly disconnected everything and went home.
This is what I found out:
- If I connect the ESC without anything on the servo cable, it seems to start normal and starts beeping after a while, because nothing is connected.
- Voltage on the servo cable is exactly 5V
- Connecting the ESC to a known to function receiver. Nothing happens. ESC stops beeping, no red or green LEDs, BEC Voltage drops to roughly 2,5V
- Disconnecting the ESC from the receiver, the ESC plays the "starting sound" of three peeps in different tones.
Its exactly the same for all 4 ESCs! Are they all grilled? Or do they need to be reflashed? Any options to get them working again? They don't smell, nothing is burnt, all looks normal as far as I can tell.
Of course I can order new ones from HK, which is kinda sad, because they are roughly the price I had to pay for the whole quad... plus I need to know what went wrong, so it won't happen again!
My guesses:
- I used the very cheap power distribution that came with the quad - the ones you simply put the bullet connectors from the ESC in. Because they are not perfectly isolated, there is a slight possibility that they touched when I tried to remove the battery from the connector. I zipped it all together so it wouldn't move, but still...
- I fully connected all ESC to the KK2 board. I know that there might be problems if different BEC drive the same board. But if I understand the KK board correctly, only channel 2-6 are connected, so I must at least have one ESC still beeing intact....
Any ideas on what went wrong?
Luky for me, the KK2 still seems to be functional and the receiver is also still alive.
This is what happened:
I successfully ran through my first battery, fiddled with the settings, hovered it a couple of times. All seemed great. Then I disconnected the battery and switched to the next - nothing happened. No LEDs, nothing. So I quickly disconnected everything and went home.
This is what I found out:
- If I connect the ESC without anything on the servo cable, it seems to start normal and starts beeping after a while, because nothing is connected.
- Voltage on the servo cable is exactly 5V
- Connecting the ESC to a known to function receiver. Nothing happens. ESC stops beeping, no red or green LEDs, BEC Voltage drops to roughly 2,5V
- Disconnecting the ESC from the receiver, the ESC plays the "starting sound" of three peeps in different tones.
Its exactly the same for all 4 ESCs! Are they all grilled? Or do they need to be reflashed? Any options to get them working again? They don't smell, nothing is burnt, all looks normal as far as I can tell.
Of course I can order new ones from HK, which is kinda sad, because they are roughly the price I had to pay for the whole quad... plus I need to know what went wrong, so it won't happen again!
My guesses:
- I used the very cheap power distribution that came with the quad - the ones you simply put the bullet connectors from the ESC in. Because they are not perfectly isolated, there is a slight possibility that they touched when I tried to remove the battery from the connector. I zipped it all together so it wouldn't move, but still...
- I fully connected all ESC to the KK2 board. I know that there might be problems if different BEC drive the same board. But if I understand the KK board correctly, only channel 2-6 are connected, so I must at least have one ESC still beeing intact....
Any ideas on what went wrong?
Luky for me, the KK2 still seems to be functional and the receiver is also still alive.