If 3 of the frame transistors were identical, that could be part (or maybe all) of the issue, as one of them is wrong. There should be two 2N3716's, and two 2N3792's. The NTE might be a substitute for a 3792, but three 2716's definitely isn't right.
That said, it may have just blown the fuses, but it also could have damaged other active parts on the PCB. You should test all transistors on the deflection board with your DMM, looking for shorts between any of the 3 pins, and checking them using the 'two diode' method (google how to test transistors if needed).
If all of the transistors on the deflection board check out ok, you could try replacing everything, and firing it up. Worst case things will blow again, and parts on the PCB may burn up. In which case you can trade it in toward a rebuilt one (which I have).
Yeah I got that wrong. I edited my above post. there were (2) 3792s and (1) 3716 and (1) NTE284
