I have a problem with my 745. When I rang Bellevue, WA, they said: Never heard of it. My friend in LA who has the same pronlem got the same anser.
The problem is as follows:
The tuning counts slowly DOWN whether it's memory or VFO. I
temporarily used the set by turning the dial in the UP
direction faster than the countdown and then used the lock
button when the set arrived on the desired frequency. The
XIT?RIT can be used for small corrections.
My friend who has a complete professional lab at his disposal found a
temporary fix. He grounded pin 40 of the I/O IC which steers
the CPU. Everything workds fine except that you miss the
slowest tuning speed and that the UP/DOWN button on the mic
does not work. I did the same and my set work the same. The
tuning is a little bit coarse now but usable except you have
to be careful especially with RTTY or AMTOR.
The local ICOM repair shop is too busy at the moment with their normal work,
and I don't like to be without this set for too ong a time.
I can't use the 730 to drive my linear at least not without a
lot of trouble. I suspect thqt one of the two transisstors
has gone but which? I just wonder if any of your readers has
had the same problem and fixed it.
|
