Hi Catalina,
Thank you for posting photos of your 2005A and you are right. The manual and board layout (dated 1969) found online doesn't match my power supply. From the capacitor date code, my power supply is a 1974. Strangely, the revision marking on the circuit board is Rev A and it matches the schematic!
When I get a chance, I will try to reverse engineer the schematic of the circuit board. If any one with a later year 2005A, can you take a look see of the marking on the fried component on my board? I am guessing it is a TIC47 (mfr code CR24) a SCR.
Thanks!