[ICOM] IC-R70 help

[Wally Gibbons]

Greetings,
New to the list, and needing some help with my R-70. It's lost
sensitivity. Instead of hearing a .1uv signal on ssb, now it takes 1 uv
to hear a carrier (my service monitor). I've injected signals into the
RF board, trying to find the dead stage, but so far, zilch. Switching
diodes seem ok in the front end. Preamp works, improves signal strength,
but the radio just doesn't hear like it has in the past. S meter seems
"dead". Anyone ever measured the sensitivity at the first if frequency?
It's on par with the antenna jack sensitivity. Anyone seen this on one
of these receivers?

Thanks.

Wally Gibbons, WB7ASQ
North Logan, Utah