[Yaesu] FT890 strange behavior

[Michael Tortorella]

Hi all, using an FT890 with Astron SS-30M supply and DX Lab Suite. Receives FB but the instant I hit the key, the xcvr shuts off, the supply voltage goes down to 3 volts. Turn everything off, restart, same deal: receives FB, as soon as I hit the key, the xcvr shuts off and supply goes to 3V. At first I thought it was RF getting into the supply so I separated the two by a couple feet and this _seemed_ to help. But tonight the problem is back fully.

This first happened two days ago. Then last night everything was fine, worked several stations OK. Tonight, problem. Has anyone seen anything like this before? Any advice greatly appreciated.
Thanks and 73
Mike W2IY