MetalHivemind t1_iwfr8v8 wrote

Okay, so I did a bit of research and this keeb does indeed have ESD protection.

Here is a shot of the PCb where the protection IC is located:

In that shot, you can see the JST connector and to it's right, a small IC labeled UL26. That IC is the ESD protection. Here is it's datasheet:

Here is a shot of the daughterboard:

As you can see, there is no UL26 located on the daughterboard. There is a part labeled A7 that appears to be grounded (?) to the case via the db's screwhole. I also speculate that the USB hole in the case is too tight and perhaps the USB connector is hitting the case and that's how the ESD is making it through. The main PCB should be well isolated with the gaskets in use as well as the thin isolation sheet in the case.

Perhaps the fault is with the data lines? Doesn't seem to be much if any protection on those lines and maybe that's how ESD is affecting these boards... but I honestly don't know enough about this and I am just hoping that what I provided can offer some insight into the situation.


MetalHivemind t1_iwc79ya wrote

Afaik, it was designed with it. There's MANY others that apparently don't have this issue, like myself. I have 2 PCBs from them. It's cold af where I am right now. Dry air, carpeted room. ESD heaven. No issues so far. I'm not saying ESD didn't kill theirs, but there's no widespread issue. Defective parts happen.


MetalHivemind t1_iwavk0x wrote

Pretty sure this board has some kind of ESD protection built in, it uses an ARM processor.

Did you use the very bottom thin insulation sheet? How quality is that cable you are using? The cable could possibly be the cause, if it's not grounded properly.

You could try reflashing the firmware (White caps LED: VIA version, VIAL Version, Red caps LED: VIA Version, VIAL Version) too, if the board is responding at all (which it seems it very well may be), this could recover it.

However, even with the money I spent on this board and others, I always buy at least 1 spare PCB.