We use a Strata XXe phone system in our house, and after working just
fine for many months, it suddenly went completely dead. No phones, no
lights, no power light - nothing. We have checked the power supply,
and none of the 4 breakers or 5 glass fuses seem to be blown. There
was a diode near a bank of large capacitors which appeared to be
shorted - it or something near it had gotten hot enough to blacken the
PC board a bit. Replaced said diode with no change in status. AC is
present on the primary and secondary of the line transformer, but
that's about it. Primary bridge rectifier is fine. Anyone (Sellam,
maybe?) have a schematic for the HPSU-9120 power supply (or a cheap
source for a replacement)? We purchased a downloadable PDF of the
installer's manual some time ago, but it doesn't have schematics. It
indicates that you should try swapping out power supplies and/or
checking the output voltages of the supply and replace it if they are
incorrect. So much for that... Suggestions?
-Bill Richman (bill_r_at_inetnebr.com)
Web Page:
http://incolor.inetnebr.com/bill_r
Home of the COSMAC Elf Microcomputer Simulator, Fun with
Molten Metal, Orphaned Robots, and Technological Oddities.
Received on Sat Apr 20 2002 - 21:31:43 BST