[RodB]

From what I see is the blue cap was added by someone after the radio was sold presumably to replace cap 40A. I can't tell if the original 40A had been removed from the circuit. In any case, you should remove original 40A and the blue cap and connect a 4.7mfd cap with the negative lead to ground.

I am assuming the black electrolytic cap in the last Pic is cap 40 and the center terminal of the strip is ground. Therefore, it appears cap 40 is connected backwards with it's positive lead connected to ground. When you do this you get the result you experienced, pop!! The 2.2k resistor should be connected between the positive leads of caps 40A and 40 as the schematic shows.

Whenever a new cap is connected across a defective one the result is a bigger defective cap.

Take your time and carefully remove the old caps from the circuit then connect the new caps in the correct polarity. Test the 2.2k resistor, it may be okay. If the resistor gets hot then there's a problem with one of the circuits that is connected to cap 40.