Howdy y'all. I came across the repeater builders website looking for information on the Astron 35A. I am in my 4th quarter at ITT and just started Devices 1.
I just received a non working 35A from another ham for use as "Study" material for our electronics club. Looking at the 4 different schematics available I Believe that we have the one based on the 1991 schematic. So far we know that the MCR225 is toast. There was enough of it to get a partial number off to help us guess that it was the 1991 version which is the only one to use that specific part number. Also on the cabinet mounted TIP29 there is a brown lead that I believe is coming from the emitter to the top of a resistor sticking up on its end. That resistor is also toast and I am guessing the tip29 along with it. I am not sure if that is the 2.4 ohm resistor that is omitted in some of the other schematics or not. Its too burnt up to tell any color codes. I am curious as to what would have caused this kind of failure along with suggested replacement parts numbers. I also need verification as to the Identification of the "mystery" resistor. Any help would be appreciated. 73
