Those D4’s and D1’s are soooo Ugly though.
two of the worst I reckon.

You just unlucky there. I have, and know others with the S41’s none (so far) missed a beat.

Just replace the LED’s. or maybe just replace whole mcpcb with new chips.

They are also only $23/25 US new to buy on here at present with coupon. Free freight.
I believe Kaikomon does a nice little quad too (side sw?)