At some time in the past someone tried to design and install a new power supply board. I'd say, "What an IDIOT!", but I know who attempted this and he was not an idiot. This ham (now SK) was a great DXer and a good technician. Why this was attempted I have no idea. Bill sent both of this CX7s down for repair. The first one was mostly damage to the front panel and some minor repair. I did have to use the meter from this radio to get it going since the original meter was long gone. I'd like to thank Bob Zaepfel for sending a meter bezel for this restoration.
This restoration required a total rebuild of the harness in the power supply area. Since the board that was installed was no where close to an original board I found an original board in my parts and used it. This board was missing many parts and some traces but it was a perfect candidate for the IC mods which remove most of the pass regulator parts anyway.
Here are some before, during and after pictures. The radio is now running with a few problems yet to solve. One thing I must do is build a new audio output module using an LM380 since the original parts on the power supply board are gone.
Update February 1, 2009. I received a parts rig from Bob, W0YVA. A number of parts are missing and the wiring harness is chopped up so this radio can never be restored. It had an LM380 module in it so I used that to get the audio going in this radio. Now that I can hear everything I can proceed to complete the receiver. One thing for sure is the BFO Board is way off frequency. Here is a picture of the module installed on the Power Supply Board.
Created:
November 11, 2007.
Last
Updated:
February 01, 2009
© Copyright 2009, PakRatz, Corpus Christi, Texas, USA
Return to