Ok, thank you for the hint. I'll see what I can find.

I've already confirmed that it was a polarity issue.

They didn't come with heatsinks, and I'm only in the middle of building my set up. Heat management is to follow. I simply need to confirm the boards are working and can hash.

At the moment I need now repair the damaged boards by replacing the destroyed components. What components have been damaged? And where would I get replacements from?

Just a quick follow up I've tested the last remaining Gridseed Blade using the recommendation from @PassThePopcorn and no explosions!

Thank you!

Now on to the task of repairing the damaged boards. What components have been damaged and where can I buy replacements from?

Right, I have one Gridseed Blade left to try. These are the original wires. I will test with the wires reversed.

You mention "The gridseed orbs would pop", am I able to purchase replacement "orbs"? If so where could I get them from?

I'm wanting to get into mining not so much for the mining reward but because I support the idea of decentralised currency and the power of peer to peer transactions.

However I have a problem with getting some Gridseed Blades up and running. Something on them is exploding. Please see the below photos.

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This is my power supply unit.

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I live in the UK so the voltage is set to 220V mode.

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This is the front of the PSU wired up. My multimeter reads 12v coming from the output.

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I'm in the middle of building a stack of blades but I need to overcome the problem of something in them exploding.

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In this photo you can see there are three components that have exploded. What are these components? What would cause them to explode?

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This photo is for comparison, this is a good blade where the components haven't exploded.

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I've tried to look for a datasheet or a gridseed blade board schematic but I can't find one.

Every time I connect a blade to my power supply these same components explode. What could be causing this to happen and what could I do to stop this from happening?

Also I would like to repair the Gridseed Blades that have already exploded, is there a schematic for this board, or at least what are the components that have been damaged?