Repair of an HP82004A Power Reserve Pack

[albertofenini]

I believe there are some schematics, but it's a fairly simple one I may draw it and share it,
we used exactly the same transistor, the 4-094 is used in the PSU of most of the
Classic units and we had a spare, although with an HFE of 14, which we believe good enough.

This why we are surprised that id does not behave like before having substituted the
transistor with an original one and not an equivalent.

Also, even if not shown in the pictures, even the original led has been re-utilized
given that it was working.

Besides, once the same voltage is provided and the same current can be drained
it should be working right ?

Let's see if someone has a hint ....