[ICOM] IC-756ProII Display, Receive dead

[William J. Wickstrom]

Hey, Gang:

The other night I put my trusty 'Pro II to bed in my usual way (powered it
down with the front panel power button and disconnected the antennas) after
using it on two nets with no issues. When I attempted to power it up the
following morning, the display was totally dark (no backlight, do
discernible characters), the S meter stood steady at around half-scale, and
there was no audio output. The S meter backlight and LED indicators were
lit, however. I tried a "hard reset" of the CPU, to no avail. I checked the
power supply voltage at the screw terminals inside the rig, and measured
13.8 VDC. I visually inspected the chassis throughout, verified that all
connectors and ribbon cables were seated, etc., but turned up nothing
unusual.

Before I pack the rig up for shipping to Icom Service, does anyone have any
suggestions as to what else I might check? I am a fairly capable (if I do
say so myself) bench tech, and have a good compliment of basic test gear.
What I'm really short on is TIME, so I'm hoping some of you here can offer
some guidance as to where best to look next.

Thanks!

W1IK

William J. (Jim) Wickstrom, W1IK
Technical Director,
Utica/Shelby Emergency Communication Association (USECA)
w1ik at arrl.net
www.usecaarc.com