01-01-2012, 04:55 PM
Hi Dennis,
(1) I have a number 41 bulb in my 70. (2) You have an early model 70, before the alphanumeric serial numbers began. (3) According to the schematic, the electrolytics should be 6MFD. 450v. Are your electrolytics marked Sprague by any chance? I have two 70's with Sprague electrolytics and they appear to be original parts. I only have one 70 with the Mershon copper caps. (4) You should be okay using .22 for .25 caps. Usually, if you stay within 10% of the listed value you are okay. I don't think exact tolerances are too critical in the early sets, my Tech college instructor used to tell me that the early stuff was "Brute Forced"
!
Hope some of this helps and good luck with your "70"!
Kevin
(1) I have a number 41 bulb in my 70. (2) You have an early model 70, before the alphanumeric serial numbers began. (3) According to the schematic, the electrolytics should be 6MFD. 450v. Are your electrolytics marked Sprague by any chance? I have two 70's with Sprague electrolytics and they appear to be original parts. I only have one 70 with the Mershon copper caps. (4) You should be okay using .22 for .25 caps. Usually, if you stay within 10% of the listed value you are okay. I don't think exact tolerances are too critical in the early sets, my Tech college instructor used to tell me that the early stuff was "Brute Forced"
!Hope some of this helps and good luck with your "70"!
Kevin
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