[jedd]

Hi all, After a bit of advice on a laser I recently acquired.
It appeared that the Leetro control wasn't powered up a few months back but all the fans and everything else were on so tried replacing the control panel which didn't help. Checked any fuses that i could find anywhere. I've now managed to purchase another control+board for next to nothing but just need a bit of advice before plugging it in. The boards are slightly different but all the plugs on the side are labelled up the same as the existing one so just wondering if anyone sees any reason that I can't just plug it in to try? The earth tags I guess will just need soldering on to the same location the are on the original board?
Thanks in advance of any advice you can offer

[Algirdas]

You can just replace. Just follow markings.

[jedd]

No luck after changing the board, control pad still doesn't fire up.
I did notice one of the Microstep drivers LED doesn't light up and it seems that Leadshine m420 is now obsolete. I do have a couple of DM442 drivers taken out of an old machine, would these be capable of replacing the M420 or am i going to need to find an alternative?