04-19-2013, 01:58 PM
HOUSTON – I HAVE A PROBLEM
I need to stop the presses here a minute, I’m going to need someone to look at the model 18 schematic (code 121 NOT 124) and just verify that I’m not crazy. The one on nostalgia air is ONLY for the 124 I have both 121 and 124 schematics and they are NOT the same. I can e-mail you the PDF if want? Just private message me on this site.
The notes indicate that the dotted line is only for model 503…also, I checked the 124 schematics and the dotted line appears as a SOLID line. On my 121, it is a dotted line from #40-C 2.0 ufd cap to BOTH the T-connection of resistors and to the #75 Tube…and these are the only connections which would mean that it doesn’t hook into…ANYTHING??
Obviously that’s not correct. Looking more closely, another note says “Screen supply broken here on 503 model” and the ‘here’ is pointing to the dotted line connecting the cap to the screen plate of the #75 tube. This brings us back full circle to say that the 2.0 ufd cap IS connected to the #75 tube but NOT to the 2 resistors (#61/#62). Right?
Sorry for taking you boys in circles for the last few days. If what I have above is correct, that 2.0 ufd is connected to the #78 tube ONLY, then I believe this is how it was hooked up before I messed with it (because that is what my pictures show) and my problem was never with how it was hooked up, but that I needed a 2 Watt 32K resistor instead of the ½ watt that is in there now!
Sorry for being annoying, but hey, it helped me learn how to read a d@mn schematic a bit better, so that’s a good thing.
I need to stop the presses here a minute, I’m going to need someone to look at the model 18 schematic (code 121 NOT 124) and just verify that I’m not crazy. The one on nostalgia air is ONLY for the 124 I have both 121 and 124 schematics and they are NOT the same. I can e-mail you the PDF if want? Just private message me on this site.
The notes indicate that the dotted line is only for model 503…also, I checked the 124 schematics and the dotted line appears as a SOLID line. On my 121, it is a dotted line from #40-C 2.0 ufd cap to BOTH the T-connection of resistors and to the #75 Tube…and these are the only connections which would mean that it doesn’t hook into…ANYTHING??
Obviously that’s not correct. Looking more closely, another note says “Screen supply broken here on 503 model” and the ‘here’ is pointing to the dotted line connecting the cap to the screen plate of the #75 tube. This brings us back full circle to say that the 2.0 ufd cap IS connected to the #75 tube but NOT to the 2 resistors (#61/#62). Right?
Sorry for taking you boys in circles for the last few days. If what I have above is correct, that 2.0 ufd is connected to the #78 tube ONLY, then I believe this is how it was hooked up before I messed with it (because that is what my pictures show) and my problem was never with how it was hooked up, but that I needed a 2 Watt 32K resistor instead of the ½ watt that is in there now!
Sorry for being annoying, but hey, it helped me learn how to read a d@mn schematic a bit better, so that’s a good thing.
