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Restoring a Leak Point One Preamp

I have had this preamp for decades! Used it all through high school, but has sat idle for a long time. Couple questions to see if anyone can help:
1. Knobs - I took off original knobs to put on more "modern" ones, now I can't get the old ones back on. Shafts are a D shape and knobs press on but seem WAY too tight to push on the shaft. Tried a bit of lube, still no go. Any ideas?
2. I need a schematic. Mine seems unique - lots of [different] Point One schematics out there but none exactly right. Mine has a rumble cut filter switch on front as well as a Stereo-Mono-Rev-L- R switch.
3. The umbilical cord that attaches to the mating Stereo 20 to provide power to the pre may be fine, but sure looks dry and is cracked in a few places. Any way to restore?
Thanks!



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Topic - Restoring a Leak Point One Preamp - SteveBrown 15:27:26 10/28/20 (1)

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