do you know how I can find a replacement power socket for the pcb on a sony bluray player like the one on this item?

It is the yellow colored socket on this model and still used on most Sony players still in production that use an external AC adapter.

All of my elderly Mini 2,1 still are running correctly with their original PRAM batteries.

I still have three Mini 2,1 models in use as DVR’s using EyeTV running OS X10.75 because the last version of EyeTV to still use the free TitanTV guide doesn’t work with 10.8 or higher and the TV Guide program guide was a subscription service until it was discontinued. Further development in North America was probably dropped due to legal issues since the last version allowed you to record and edit HDTV programs in full HD 1080 resolution and burn them to DVD in Blu-ray format if the original file was less than 90 minutes with a dual layer DVD while longer files could be burned to recordable Blu-ray. The DVD with Blu-ray content plays on every Blu-ray player I have tried them on.