Bitmain S19 Pro Dead Hashboards

Just wanted to share some info here because it looks like Bitmain is still putting out subpar products. I recently got a shipment of 12 new S19 Pro (110T) units from them, and within just 2 hours of setting them up, 3 hashboards are dead on 3 different miners, showing 0 asics. It's clear they aren’t doing proper testing before shipping. Sure, I know they’ll replace them under warranty, but it’s such a pain since you have to send the whole unit back. Unlike Whatsminer, who let you send back just the faulty hashboard.

I think it is due to delivery sometimes they don't handle them with care. If you are far and shipping is expensive it would be better to repair it on your own. How about trying to do some basic things first like upgrading the firmware of your 3 units to the latest version? If it still doesn't work try to replug all cables of these 3 units and test it again.

The other part that is brutal is that Bitmain can take months to actually return the dead units after sending it in for warranty repair. They've kinda unknowingly changed the meaning of silicon lottery...

I am using vms they are in Long Island NY. IIRC you are in the general area of NY. https://vmssecuritycloud.com Th owner is named GREG if you contact him for repair tell him I sent you.

Speaking from very limited experience, the couple of S17 boards I've seen and repaired the solder quality was appalling. I expect the S19 are of similar quality. With a few thermal cycles and transportation vibration I'm hardly surprised that they end up failing. I think they must use OSP on their bare boards before reflow it leaves a nasty resedue if not reflowed properly, leading to weak solder joints. All the fixes I've done were achieved through reflow/resoldering of the suspect ASIC's, on the S17 the hardest part was removing the heatsinks without damaging anything else. I think the S19 uses a different heatsink strategy, so might be easier to rework. I don't think quality control for soldering is their expertise.