On Sat, Aug 15, 2020 at 01:59 PM, Harvey White wrote:
Interleaved
Then the thing to check is what's in the unit that happens before that
on/off switch.? Another question, however embarrassing, is if you can
figure out what went wrong (in terms of how the extender is put in), and
what the possible results might be.? That could tell you what might be
damaged.
I¡¯m a bit out of my depth here, if not completely...
I¡¯ve check the Vcc of U950 and I have -30.62 VDC at pin 4.
Output at pin 6 is -1.2VDC
U960 has nothing anywhere.
I suspect Q960 pass transistor (2N5401) to have blown along the the Mainframe fuses...
I hope no other transistors down the line blew as well, as I have no source for Q950 and Q955 (2N5086) and I¡¯m not sure I can find equivalents (if there are any suitable for this application)...
