- Best electronic contact CLEaner - 5 Updates
| Retirednoguilt <HapilyRetired@fakeaddress.com>: Aug 02 01:18PM -0400 On 8/2/2023 1:46 AM, micky wrote: > --- I read that the KLH 200 was the last high quality thing that KLH > made. I'm still using a KLH 21 that I bought new in 1968. Has never needed servicing. It's in our kitchen and we listen to it daily. Still works perfectly except that the inner vernier dial spins uselessly. However, it's easy to tune from the outer vernier dial. I wish modern electronic devices were built to last (but then the market for replacement items would be smaller). Sneaky bastards use components at the very edge of their max specs that predictably fail much sooner than if components with more conservative specs were used. Also, quality control ain't what it used to be - probably by intension. |
| "Peter W." <peterwieck33@gmail.com>: Aug 02 11:52AM -0700 Contact cleaners - a moving target. When my wife and I were working in Saudi Arabia, I purchased Cramolin Red in the electronics souks for SR10 (about US$3) per 300ml pressurized can. In Saudi, nothing can be sold without complete disclosure on the labels (Caig products are not sold there). So each can had on it: Hydrocarbon and hydrocarbon propellants: 95%. Oleic Acid: 5%. Oleic Acid has been used in the clockmakers profession for over 100 years. Oleic Acid is a derivative of cheap olive oil, for the most part, and can be purchased in food-grade quality (purest) over the counter, and sent through the mails. I mix it in 1/2 ounce quantities in eyedropper bottles using pure naptha as the medium at slightly less than 5%. Why? Contact cleaners such as DeOxit have the virtue (vice) of continuing to react until all the active ingredients have been consumed. So, it MUST be rinsed off after the work is done to prevent further reaction. As proof-of-concept, find an old actually-copper penny and put it in very cheap olive-oil for a bit. Once upon a time, Caig was the US distributor of Cramolin products - that ended very badly with considerable ugliness on both sides. To this day, I will not purchase Caig products. Peter Wieck Melrose Park, PA |
| three_jeeps <jjhudak@gmail.com>: Aug 02 12:07PM -0700 On Wednesday, August 2, 2023 at 2:53:00 PM UTC-4, Peter W. wrote: > Once upon a time, Caig was the US distributor of Cramolin products - that ended very badly with considerable ugliness on both sides. To this day, I will not purchase Caig products. > Peter Wieck > Melrose Park, PA Interesting - never heard of Oleic acid. So what are the percentages of oleic acid to naptha. So you are saying that the oleic mixture does not have to be rinsed off? And it functions well as a contact cleaner? Thanks J |
| micky <NONONOmisc07@fmguy.com>: Aug 02 06:30PM -0400 In alt.home.repair, on Wed, 2 Aug 2023 11:47:40 -0400, Ralph Mowery >Be careful on what you use contact cleaner on. Some will melt some >plastics. I melted a set of 5 plastic push buttons due to the contact >cleaner melting the plastic. Thanks. And since I posted I remembered that this one switch doesn't work at all, but some of the momentary switches are a problem. They don't work the first time, or they work twice when I only want once. The LPS might be good enough for the slide switchm, but I think these others need Deoxit. |
| micky <NONONOmisc07@fmguy.com>: Aug 02 08:09PM -0400 In alt.home.repair, on Wed, 2 Aug 2023 13:18:38 -0400, Retirednoguilt >> made. >I'm still using a KLH 21 that I bought new in 1968. Has never needed >servicing. It's in our kitchen and we listen to it daily. Still works That's pretty good. Bought in 1968!. I didn't get this until 1986 was made before the 200. >the very edge of their max specs that predictably fail much sooner than >if components with more conservative specs were used. Also, quality >control ain't what it used to be - probably by intension. I just bought a hearing amplifier with bluetooth, that is like a hearing aid but it has a yoke in case one falls out of my ear it's still attached, plus I can talk on the phone or listen to webradio from the phone. And it works fine but it won't pair with my phone, or my other phone. I'll try some more but I think it's broken. ($130. I mislaid or lost my other one, and I need one to hear what the doctor is saying.) But on the good side, I got my KLH 200 open with the instructions I quoted in the previous post. On the bad side, the switch in question seems to have a plastic cap on all sides, not like slide switches in the past where you could even see the contacts. On the good side, I sprayed it anyhow and the radio seems to be working fine now. Even after the last screw came out it was tricky to get it apart -- it kept catching on things, don't know what. |
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