I'm trying to repair a NU67 power supply. Someone had
cobbled together what looks to be a bridge rectifier by
soldering 4 diodes together to replace Gr2. It looks to
be a very half-assed job.

The schematic reads B30 C500/250

My electronic knowledge is somewhat limited. What are
the values of this component? What type of package?

Thanks.
--
--
John Noll