This radio uses Mechanical switch - multiple pole type, so while you are STARTING to get it working, when you have ZERO bias, that usually means the radio is still looking for power in specific areas.
Zero Bias in he TX BIAS section tells me that the TX light, if it's on, means power to that section is good, it's the resistors like R149 (100 ohm) on the Final, and R152 220ohm - along with their power filter caps like C125 and C191 - these are 10V caps that can easily act liek resistors and suck away the 8 votls TX side power from those lines all day at their age.
[ATTACH=full]42088[/ATTACH]
There's even a few discrepancies on the silkscreen to Number labels...
[ATTACH=full]42089[/ATTACH]
You have AT LEAST two poles that run votlages with soem heavy current thru them..
If they can't make power flow thru the route to the parts they feed, then look for blown traces or at least a CONTINUITY CHECK and VOLTAGE read along the rail (Power feed trace) to that section from these switches.
It's why I usually groan over this but when you're dealing with one making a board for another - their hands are not seeing what those other hands are doing to their stuff...
