9088iis Potential P.S. Failure
pmt257
Posts: 2
Hi, have a 9088iis, Unit powers up (LED and Fan) Unit has MIC cards and the 8 input signal meters work correctly. However unit will not respond to either RS232 ports and will not be recognized on a network. I metered a few test points on the P.S. section of the board.
Results:
VP8 5VCD 3.73v
VP6 5VCA 3.74v
VP4 +VA 15.8v
VP3 +15V 14.7v
D48: 3.80v
T2A 5V Fuse: 3.8v
Fan Power Connector: 3.83V
All voltages with reference to Digital GND.
I'm guessing all the points that are reading around 3.7v should be 5v.
Any quick guesses as to where the PS may have failed? Also do you think the unit is dead? Will running at this low voltage hurt the CPU or PGA?
Also Watchdog output is Open Circuit.
Thanks for any help.
PT
Results:
VP8 5VCD 3.73v
VP6 5VCA 3.74v
VP4 +VA 15.8v
VP3 +15V 14.7v
D48: 3.80v
T2A 5V Fuse: 3.8v
Fan Power Connector: 3.83V
All voltages with reference to Digital GND.
I'm guessing all the points that are reading around 3.7v should be 5v.
Any quick guesses as to where the PS may have failed? Also do you think the unit is dead? Will running at this low voltage hurt the CPU or PGA?
Also Watchdog output is Open Circuit.
Thanks for any help.
PT
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