[marv]

I'm assuming you have looked at the info on Philco Repair Bench for the adjustments for the BOL if you say you've adjusted the light beam. I have a 41-629 with the BOL changer that I got to work pretty good. I ended up replacing the old cell with a cell from a money changer and had plenty of output. I don't know how much voltage your old cell is developing, or if you have the original lamp (I do). After all of my restoration to the chassis and changer I adjusted a compensator in the radio (for the BOL) so that when I swithced between the radio broadcast and the recording the volume was about the same. One advantage with the cell I used for replacement is the intensity of the lamp (RF from radio) is quite a bit dimmer and I would assume prolong the life of the extinct lamp.

I looked at the schematic for the 608 and I didn't see where any adjustments are for the BOL. They refer to the index.