[Icom] PS-35 Tech Info Needed

Sun, 20 Jul 2003 14:34:31 -0700

Hi Frank,

The IC-765 PSU is similar to the PS-35. There is a circuit description of it
on p. 3-12 of the IC-765 service manual  - a 28 MB file, downloadable at
<http://www.qsl.net/icom/manuals.html>

Cheers for now, 73,
Adam VA7OJ/AB4OJ

-----Original Message-----
From: [email protected] [mailto:[email protected]]On
Behalf Of Frank N. Haas
Sent: Sunday, July 20, 2003 14:19
To: [email protected]
Subject: [Icom] PS-35 Tech Info Needed

The Internal Power Supply in my ICOM IC-751A, the PS-35 has quit operating.
The fuses are not blown. It just doesn't start anymore.

Physical inspection revealed an open solder connection between to
odd-looking transformer devices. Repairing that did not correct the trouble.

I'm told that the usual problem with these switching power supplies is
failed capacitors. I don't know as I don't have much experience with
switching power supplies.

I have the schematic that came with the unit but I'm not familiar with the
functioning of this type of unit.

Is there a source for a description of the circuitry or perhaps a service
manual for the PS-35??

If not, are there any recommendations on where I might get this unit
serviced??

Many thanks to all.

Frank N. Haas KB4T
Florida

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