Just for what it is worth. I am today involved with ( series 040XXX) PA. All capacitors and in (fan) control unit attached to it are tantalum. As I said in a former post the TX13.5V from RF unit to PA unit went to 3V. The source is OK, so I will start changing tantalum capacitors 9 in total. Very clear overload, some capacitor went nuts (as expected). They dont go open, they short, and may damage circuit upwards.
Mine went too far because 25 years of no use. But the first symptom of malfuntion is distorsion because the capacitors pull down the PA bias voltage. When you notice it may be too late. Anyway the 13,5V PS overload control made its job in my case. Probably cut the whole and left 3V. Q01 in 13.5V PS acts as a constant intensity source.
