09-22-2011, 10:56 AM
Hi everyone; I'm a new member to this site and I have a problem getting a proper set of schematics (even from Riders) !!!
Example: I really liked the Philco 48-200 and I purchased a couple of them because I was looking at a Riders schematic and it has some really good troubleshooting specs. What I didn't realize was that the schematic and the troubleshooting guide is for the 48-200 Code 125 and my 2 sets are Code 121. The 35Y4 and 50L6GT are strictly for use in a Code 125 set and are replaced with a 35Z5GT and a 50A5 in a Code 121 set. Since the pins are different that means the schematics are different for the Code 125 and the Code 121.
It appears as if there are a lot more Code 121 sets in existence than there are Code 125's. So why did Riders not draw up a set of schematics for the Code 121 sets instead of just indicating the tube changes on the Code 125 schematics ???? This problem occurs on a lot of the Philco sets during the 1940's ans 50's.
Anyway I have seen a schematic of a 48-200 Code 121 (with the 35Z5 and 50A5) somewhere in the past and my other question is: where can I find the proper Philco schematics with the Code 121 ?????
Thanks;
Andy
Example: I really liked the Philco 48-200 and I purchased a couple of them because I was looking at a Riders schematic and it has some really good troubleshooting specs. What I didn't realize was that the schematic and the troubleshooting guide is for the 48-200 Code 125 and my 2 sets are Code 121. The 35Y4 and 50L6GT are strictly for use in a Code 125 set and are replaced with a 35Z5GT and a 50A5 in a Code 121 set. Since the pins are different that means the schematics are different for the Code 125 and the Code 121.
It appears as if there are a lot more Code 121 sets in existence than there are Code 125's. So why did Riders not draw up a set of schematics for the Code 121 sets instead of just indicating the tube changes on the Code 125 schematics ???? This problem occurs on a lot of the Philco sets during the 1940's ans 50's.
Anyway I have seen a schematic of a 48-200 Code 121 (with the 35Z5 and 50A5) somewhere in the past and my other question is: where can I find the proper Philco schematics with the Code 121 ?????
Thanks;
Andy
