Thanks Evan for prompt reply, but i dont think mic drive is an issue here because with the same setup earlier it was pushing 5 to 7 watts on ssb.
Then it was sitting idle for 5-6 months away from any RF source. Now when i power it on with same setup, no SSB.
Wattmeter i am using is sensitive for low 1watt.
I tried long Helooooowwww, no power.