Does anybody know a replacement for the 2N6258 TO-3 style transistor
used on the back heat sink of the Ten-Tec 262M power supply? I cannot
find a 2N6258 listed in any of my electronic catalogs or substitution
books.
I recently bought a used 262M that doesn't work. The meter lamp lights,
the transformer works and the rectifier works. I read 25 volts DC
coming from the filter cap. However, there's no 13.8 volts anywhere in
the power supply. I suspect something wrong in the regulator board, but
I'm awaiting a schematic to figure out what it is. However, I did
notice some bubbling on the case of the 2N6258 transistor which leads
me to suspect it will need replacing, even if the main problem is in
the regulator board.
Any suggestions on fixing this power supply will be helpful. I've never
delved into a Ten-Tec supply before and it looks mysterious to me. (For
example, most power supplies I've owned before have four pass
transistors on the back heat sink, but the Ten-Tec has only one!)
73, Winston K4CWQ
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