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Author Topic: CLEANING UP VARIABLE CAPS IN DIRTY OLD AMPLIFIERS?  (Read 1687 times)
WB4SPT
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Posts: 757




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« Reply #30 on: February 15, 2019, 03:40:09 PM »

Thanx I'll give that a try when the storms finish up here.

On the KK routine.   I did not do the first rinse with this super hot water.   It is possible that when you bring up the KK coated part temperature up 150 degrees, it becomes much more reactive.  Heat increases reactivity of most any chemical reaction.   You don't want chemical reactions, you just want the surfactants to work. 
The hot water is the last rinse step.   After all the chemicals are already washed off the unit. The hot water simply aids evaporation. 
BUT, any aluminum oxide that may have formed, will be electrically inert as far as conductivity. 
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KA4KOE
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« Reply #31 on: February 16, 2019, 02:12:28 PM »

One cleaning solution I heard of was a 50/50 mix of ammonia and 409. I used it on my R388 chassis and it cleaned right up. Be careful, however.
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