Thread: Sparton rebuild
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Old 07-14-2009, 11:03 PM
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mashaffer mashaffer is offline
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Join Date: Sep 2008
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Late this week I will finally get a chance to get started (slowly) on this taking the time to do it carefully. My plan is to Start at the output and work my way back. The PS caps will be replaced first. I intend to leave the can in there put but replacements under the chassis. There are only about a 1/2 dozen paper caps which I will replace with polyester. There is one 4uf electrolytic which I have a 4.7 to replace it with.

As I work my way toward the front end I will probably replace the CC resistors with MF and CF until I get to the rf/if sections. At that point I plan on leaving everything alone at first so as to avoid throwing the alignment off. If I end up needing an alignment anyway then I would probably replace those resistors too.

Does this seem like a reasonable approach? Also I imagine that I will spend a lot of time with the iron running but not in use. Since I don't have temp controlled soldering station should I put the iron on the variac and just run the voltage down a bit between uses to make it ready for quick heat up? What voltage would be a good starting point in that regard (30W iron)?

mike
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