[Yaesu] FT-857 peculiarity??

[I0WTD's Shack]

Have a problem with my new FT-857: when I switch it on with my nice current-protected power supply, the latter goes into protection. If I use a much simpler PS, all is going fine. I have read that the 857 has a sensing circuit which detect if supply is from battery or stabilized ac-dc converter. May this sensing circuit be the cause of the overcurrent which upset my power supply? Has anybody had any problem like this?

Thanks

Stefano
I0WTD, PA3FWP, AE4GY
i0wtd at libero.it
http://www.qsl.net/i0wtd