a fix for a failed display on the ic-756 pro ii

It might be that ESD can kill the IC151, over night and completely, but I do You can see a schematic of my station set-up here. Sequence controller to manage the switching sequence in order not to switchĪnything with HF on it. Thirdly, I have aħ0 MHz transverter permanently connected to the ANT 1. Located under the roof, furthermore do I hardly ever use HF. Very little chance that ESD is the reason in my case since my HF antennas are Numbering principle has been changed sometime during 2003, starting with 02#, seven digits,Īnd should also have the anti ESD fix from the factory.įirstly, my IC-746PRO has S/N 3623 and the TX has failed. Comments are indicating that the ESD originates from HF antenna. Removed the page, take a look here how itīe OK from the factory. According to ICOMĪmerica S/N after 3550 (if URL fails which I think it does or ICOM has (re-)installing a few anti Electro Static Discharge components. Roomers are that ICOM says that it is no longer a problem after FM or digital, just made it easier to see. It all seems to relate to one single component: IC151, µPC1678G, P/Nĩ1213606, and overheating. I already knew of the Dead TX issue of the IC-746PRO and it seemed It was RF feedback but why now? I had not rearranged my shack or cabling. Transmitted 100% carrier type signals, e.g. Started to drop in power, rapid drops though, and only visible when I Dead TX (IC151 RF Unit)Īfter having been the owner of an IC-746PRO for a good six months (August Please note that I no longer own an ICOM IC-746PRO and I have not investigated any other problems than the three problems described below. I have experienced all three generic faults: IC151 dead, ALC Jumping and LCD power supply failure. If you are the owner of either the ICOM IC-746PRO or the IC-7400 you may already have experienced the issues. The purpose of this web page is to try to investigate some of the issues around ICOM IC-746PRO reported by many radio amateurs through out the world and unfortunately not properly taken care of by ICOM.

A fix for a failed display on the ic-756 pro ii