James, RS-50 is the same RM-50? one is desk top and the RM is Rack mounted type, If that is so I will scan the schematic tonite and will send it to you.
Regards, John YV5AAQ --- In [email protected], "James" <ka2...@...> wrote: > > Hi Guys, > I am trying to download a schematic on this site for the RS50M Power Supply > and keep getting a 404 Error on each attempt on all the supplies. Any ideas? > > Also our above mentioned power supply which operates our 2 Meter and 440 > Repeaters and a low power link started humming yesterday. A trip to the tower > showed that the two large wires coming from the Pass Transistors to the post > on top of the regulator board and into the 1000 Uf Electrolytic got so hot it > melted the insulation an inch back on the wires, burned an area the size of a > quarter on the fiter side of the regulator board, turned the terminal black > on the Cap. and cracked the plastic on the cap. It never blew the fuse and a > check of the voltage showed it regulating under load and hardly a trace of AC > on the 13 volt output. The MOV or eight amp AC fuse never blew. All the > equipment hooked to the supply took off and worked well on another supply. > Anyone have a guess as to what caused this obvious surge ontop of the cap? > I am going to replace the Cap. and one resistor on the regular board which is > discolored and hope for the best. Any advise appreciated. > > Thanks in advance JIM KA2AJH Wellsville, N.Y. >
