UV Printing - UV LED goes out partway through Printing

Really stuck on this one, about 70% through printing the UV Light goes out for abour 20 seconds, then back on and then off again just before it finishes the print job. Tried multiple files so I know its not in the file as all react the same way. Any Ideas??

Sounds like it's overheating. Is there a fan on the heatsink that is not working or maybe the heatsink is dirty?

Thanks for that Jim, i’ll Check the water pump in the morning, maybe it’s failed and because it’s so quiet i’ve not noticed.

I would go for overheating too.

Cheers
Roger

Thanks Jim and Roger, certainly was a heating problem, I bought a small pond pump last night just in case and came to work at 2am, turned the Printer on and Yep, no life in the pump so threw the new pump in a cut down Coke Bottle ( so it would fit inside the case ) and now to begin my Day hopefully without Murphy's law happening lol