[francois8890]

Frank,

My 37-630 schematics in Rider's includes instructions for adjusting the shadow meter.  Do you have anything like that for your 16B?  Basically there are two adjustments that can be made.  The coil can slide forward or back on the housing.  Also, if I read it correctly, you also can twist the coil in one direction or another on the housing in order to get good operation of the meter.  I don't really understand how the latter could affect this, but that is what the instructions said.

You might want to refer to the schematics in Rider's for another radio if yours doesn't have this informaiton.  The scematics for the 37-630 are not on NA, but here is where information on the 37-640 can be found.
http://www.nostalgiaair.org/Resources/216/M0013216.htm
Consult the second page.

I hope this helps. Good luck.
Jon

Jon, thanks for your response. I do have those instructions or some that are similar that came from the Philco Repair Bench. My problem is that there is no movement on the screen as I am tuning. I am thinking this may be related to AVC or something in the operation of the radio itself that is not providing proper voltage to track the tuning for the meter. I am going to go back over all the procedures in the Philco service hints that affect the sharpness and width of the shadow and see if that helps. Thanks for your input,

Frank