[Elecraft] K2: dead on 60m and 40m

[Stephen Prior]

I have not used the K2 in some time, and tonight I notice that both 60m and
40m sound dead (all signals are very weak) and I have no power output- I
have not measured with an inline meter but there is nothing on the K2
display.  All other bands seem fine.

I have the KAT2 in CALS mode since I use an external autotuner and I can see
the swr drop as I transmit on bands other than 60 or 40, but I (sometimes)
get a Lo P warning when I hold in the tune button on 60 and 40m.

I wonder if anyone has any bright ideas?  The K2 has sat in its travelling
case for the past several weeks so has not seen any action, except that is,
that I opened up the case to install a new sealed lead acid battery.  I have
just re-opened it and cannot see anything I might have disturbed.

Thanks

Stephen G4SJP