I'm not familiar with the power supply for the HR10-250, but it isn't necessary (or desirable) to remove the heat sinks. Unsolder the cap leads and work them out from under the heat sink. They may be anchored with glue, but that is a very weak glue. I've done this on several power supplies for DSR7000 and HDVR2 without problems.
Originally Posted by jerrymc
There's a difference between needing help, and just being plain ole' lazy.
"You cannot teach a man anything. You can only help him find it for himself." Galileo Galilei (1564-1642)
HR20-700 with 2 TB, HR22-100, HR22-100, HR22-100, HR23-100 all running 0x5cd and networked.