Even though this is several years on, thank you for this snippet it lead me in the right direction - it is not hard to replace.

If anyone is reading this recently the LPT22 is discontinued, the LPT42 appears to be a suitable drop-in replacement.
https://cpc.farnell.com/artesyn-embedded-technologies/lpt42/psu-astec-5v-4a/dp/PW00321

Robin