There has been several reports of failure of the TX side on VHF and a repair has been found.
Resoldering of the small chip (I think its pre driver to the main pa chip.)
Rig powered off and a very small fine iron just touch the joints and its been reported that it does the job.
I can confirm it works as I had a VHF TX problem, so radio is back working.
Must be a bad joint when manufactured which shows up later.
Let us know if its resolved your problem?
Min G0JMS