Hello all,
This little electronic ballast for a 11W fluorescent tube (2 pin one) failed. I found a bad electrolitic a fried 1.2 ohm resistor and a shorted active device which I failed to identify. Looks like a TO-126 transistor, it is marked Si 1300313. There's another identical transistor, but either is burned too (but not shorted like the other) or isn't either BJT nor mosfet as every terminal has some measurable resistance (in the hundreds of ohms range) with every other terminal, either polarity (but resistance is different with polarity reversed). Any hint on how to identify this? Would be easier to just buy another one, but this stupid thing failed after only 8 months use, I wouldn't want to change ballasts more often than lamps.
Thanks in advance and best regards Francesco