[Kenwood] Kenwood TS-930s

[n3drk]

My kenwood 930s has performed great but i have not used ssb for the past
month or so. I have been on cw and when i tried ssb this morning i have
maybe 20 watts output on peak. Switching to cw i have full power output.
Now, on ssb the mic gain control along with the driver are at maximum
gain.Still very very low output. In fact, so low i cannot even trip the vox.
 I switched mikes and the same problem.
Anyone have any ideas on what is happening or what i could check?
thanks
john