IIRC the common Zenith one for many years was 63-10710.
RCA also used a very common one in the 90's. Dont remember
the 6 digit OEM PN#. Either should work fine IMHO. MOST from a
modern set should be OK.
BTW once in a while sets fuse blew for no real reason. It was the
high current of the DGS causing it. On Toshiba we were told to up
the fuse from 3A to 4A. You can also change to same rating slow-blow.
Also watch out for fuses with Z shaped elements. A lot of crap Korean
ones were being sold back then.
73 Zeno
LFOD !