Power Supply Replacement for ACHME 200w PSU 40mm fan

[spilly]

I'm trying to repair a SHUTTLE PC with a burnt out PSU AM630BS20S, a small 1U sized unit.
Replacement PSUs are available in the US, but at vast cost and I'm in the UK

How do I find a compatible unit that mounts in the case, what key words to use to find etc?

Approx Dimensions: H=82mm, W=42mm, with kettle power. Depth is about 150mm into the case interior
The original has a 40mm fan in the mounting face; other fans could be OK if they draw air from a clear face

Mobo connections: 1x20/24 pin, 1x4pin CPU, 2xSATA, 1xMolex + floppy (unused)
As a newbie, it looks like I can't attach pics yet - No matter

 

[Valantar]

I'm trying to repair a SHUTTLE PC with a burnt out PSU AM630BS20S, a small 1U sized unit.
Replacement PSUs are available in the US, but at vast cost and I'm in the UK

How do I find a compatible unit that mounts in the case, what key words to use to find etc?

Approx Dimensions: H=82mm, W=42mm, with kettle power. Depth is about 150mm into the case interior
The original has a 40mm fan in the mounting face; other fans could be OK if they draw air from a clear face

Mobo connections: 1x20/24 pin, 1x4pin CPU, 2xSATA, 1xMolex + floppy (unused)
As a newbie, it looks like I can't attach pics yet - No matter

Looks like a FlexATX unit to me. It's a fixed standard, so any FlexATX unit of sufficient wattage and with the required connectors should work.