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In Reply to: RE: Magnequest Repair? posted by Prospect on March 10, 2019 at 10:27:26
Hello Brian:Sorry to hear that one unit has sustained damage. Unfortunately it is more expensive to fix or repair this kind of damage than it is to just build a fresh new replacement.
Fixing say this transformer... you'd have to disassemble the core from the coil... then take out the bad winding section manually... then try to clean that bay of any residue varnish... so that we have clean winding surfaces... also need to clean the bobbin (from varnish) where the laminations went in.... then rewind that damaged coil with fresh magnet wire... perhaps the biggest hassle in doing rewinds is getting the lams out of the coil without bending or stressing any of the thin lams which have now been "glued in"... and, again, cleaning each lam of any residual impregnant and throwing out any that have been "tweaked" or "bent" during the disassembly process. Not a pretty job,nor efficient, nor the correct performance solution.
I currently do not have any coil stock or built up EXO-99's in stock. I was actually hoping to retire this part number as it has not been a good seller over the last few years.
I do have an email from you that I am chronically late in replying to. I will try to shoot off a private response with some cost figures to you.
MSL
Builder of MagneQuest & Peerless transformers since 1989
Edits: 03/14/19 03/14/19 03/14/19Follow Ups:
Mike,
Thanks for your kind reply. I sort of knew this would be the unfortunate outcome when the damage happened. Yes, there was some foul language until I calmed down a bit.
I suppose I can keep my eyes open on the resale market in case one pops up from a reliable source. In the meantime, should I assume that I could use the "undamaged half" of the choke (the other bay on the frame) for 150 Henrys at 10 mA? This would at least give me some use of this unit.
I'm also assuming the 20mA rating of a fully-functional choke (for when both bays are operated in parallel) could not be achieved with just one bay operating, because the fine magnet wire would be undersized. Is this correct? Even a few more mA would help me. Several of the tubes I might use with this choke sound best between 15 and 20 mA.
Anyway, thanks again. I'll look forward to your email.
I've got a couple gathering dust.
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