Howard: 

When you tune up your valiant, how do you get the MA and grid numbers when the meter only announces forward/reflected power and SWR and has a variable tone mode which increases or decrease in pitch with the fluctuating power? 
Do you know that this transmitter has a max power of a certain level and don't go over that with the meter's tone? I don't know how to test out the other readings accept get my XYL to read the IC meter while tuning. 
Butch, this is why I'm getting the 102 ready to go back to FLA. There maybe something wrong with the bius and the 102 expert can properly diagnose and repair this. 
To follow along a little, google NC4L Mal's Yaesu FT-102 page and you'll get the info on blown fuses. 
Mal calls it thermal run away and once this begins, the tubes are pretty much done and the only way to fix this is to replace the tubes. 

73: Mike VO1AX