I have an Icom FR3000-2 VHF repeater that was shipped to me some time ago. It was working fine before it was shipped.
When I hooked it up, the display was not working. I opened the case and found that two of the flex cables between the logic board and the front display had come loose. There is a ferrite oval on the two and it appears that it had enough weight to cause the cables to come loose when jarred in shipping. After re-inserting the two flex cables, all functions of the repeater work perfectly. In doing a quick performance check, I found the receiver sensitivity is around 1uV. I checked the patch cable from the rear panel to the receiver board- it looks fine and DC resistance checks were good. Not having another cable with the same little connector as on the receiver board, I can't substitute it. I did try a patch cable with a bare end that I could insert into the receiver; the results were a touch worse than the factory cable (as I expected), so I think the cable is fine. I tried doing the alignment procedure in the service manual, but the sensitivity didn't improve. (I did check the service monitor with a known good receiver and its output was correct.) Before I remove the receiver board to try resoldering it, does anyone have any other ideas? Thanks, Doug K4AC
