Wuben X4 First Impressions

[QReciprocity42 (efficacy ≠ efficiency)]

Thanks for the pointer! To answer my own question:

@worrub918

I took the bezel off to see how easy it would be to swap LED’s. It turns out, not so easy. They aren’t a standard sized LED. I did not remove them to measure what size they are or see what the pads look like under the LEDs… yet fingers crossed some E21A’s will fit!!!. However, I will and I will update this post when I do. They are rectangle in shape. Looking at the traces on the MCPCB, it looks like they are running in series. So, is this a boost driver? Wuben should advertise that, if it is. And, it appears that some flux may have gotten on the emitter on the right. This is after I tried cleaning with 99% alcohol. The burn mark will not come off. So, how long before that LED completely burns out?