Well some progress actually made. Ripped the oscillator out of the assembly
and removed the rest of the material surrounding everything. Now have a
schematic at least 90% correct. Part of the issue seems to be rotting
solder joints. After fixing those the unit appears to be on frequency at 5
MHz and stable. More reassembly has to happen and hard to say what
additional issues will show up. But that is progress in the right direction.
The actual oscillator is a 2n914 npn transistor in a Pierce configuration.
The output feeds an IC amplifier. Guessing a differential amp but the part
number doesn't show up in any search.
Regards
Paul
WB8TSL
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