[Amps] Fixing Arc Damage on Capacitors

Dennis W0JX w0jx at yahoo.com
Mon Aug 19 18:05:57 EDT 2024


They can be repaired but it is detailed and laborious work.  The plate caps on both my SB-220 and AL-800H have arced over and melted portions of the fixed and rotator plates.  The plates can be filed and sanded smooth and the edges of the plates rounded. It is best to remove and disassemble the capacitor to do this.
I was lucky to find some spare capacitor plates in a flea market. The plate sizes and shapes are often the same on various capacitors.
In the case of the SB-220, I had to do considerable filing and smoothing. That solved the problem. Just make sure that there are no micro projections or sharps edges on any of the plates. Also, make sure that the spacing between the plates is balanced and equal.
73 Dennis W0JX
 


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