[Icom] PS-35 Tech Info Needed

Frank N. Haas [email protected]
Sun, 20 Jul 2003 17:19:12 -0400


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