My back brake was dragging a bit, and the pads shot, so I put new fresh pads in, gave it a quick bleed, and ever since the lever goes solid, once the pistons have come out to meet the bleed block/pads have contacted the disc, there’s no travel on the lever, it’s like it’s locked out.

Hoping there’s a simple answer/cure?

Cheers

Sam

Not worth bothering with Tbf,see here £19.99 for a set ➡
http://www.chainreactioncycles.com/shimano-deore-m615-disc-brake-lever/rp-prod108825?gs=1&gclid=CjwKEAiAw4e1

difficult to tell from ^^
and not sure that a new lever is going to fix whatever is the problem

remove the bleed block, do the pistons both move and independently?
were they fully retracted when you did the bleed?