I also use the Deoxit Pen for tube pins. The applicator is slightly abrasive which I like. I apply minimal amounts to switch contacts and do not wipe it off. I want the naptha to evaporate and the oleic acid to remain so it will work on the oxides which interfere with conduction as the switch is operated repetitively. I think that if you wipe the surface dry after applying Deoxit, you may be defeating its purpose by removing the oleic acid before it does its job. I am careful to keep Deoxit off the phenolic material of switches. I have never had any problems from using Deoxit in this way. 73 ~damon, w7md
On 12/24/2011 09:56 AM, Mark Nace wrote: > Not sure if any of the threads have mentioned this, but I like the > DeOxit Pen. I think it is lower concentration, and works espcially well > on tube pins. > Mark > N5KAE > > > *From:* "scpmil...@aol.com" <scpmil...@aol.com> > *To:* drakelist@zerobeat.net > *Sent:* Sat, December 24, 2011 8:55:37 AM > *Subject:* Re: [Drakelist] problem with deoxit > > I have an HP VTVM and when I first got it, the range switch seemed > erratic. I made the mistake of liberally applying De-Oxit to the > switch and boy, it got really erratic after that. It took 2 or 3 > days of leaving it outside in the summer sun to get the switch to > dry out and it's been great ever since but a very little bit goes a > very long way. > I learned about De-Oxit from an HP service guy only back then it was > called Cramolin and came in a small bottle as a liquid. He would > take a wooden Q-Tip, dip it in the bottle and brush it on computer > card edge contacts, and then wipe it off! He claimed you only > needed the very thinnest of films to insure a good contact. I > thought he was BS'ing me but have since learned my lesson..... > > Steve KD2ED > > In a message dated 12/23/2011 10:19:00 P.M. Eastern Standard Time, > wa2...@gmail.com writes: > > In addition to the "wooden stemmed tightly woven Q tips that are > made especially for electrical cleaning" mentioned by Dennis, > AE6C, I also use the brushes listed below. A drop of DeoxIT on > either goes a long way. > > These brushes are great for cleaning 7 & 9 pin tube sockets: > > http://www.gumbrand.com/interdental-brushes/products/gum-go-betweens-proxabrush-cleaners-wide/872rn/ > > These brushes are good for cleaning RCA connectors, 8 pin and > other larger tube sockets, etc: > http://www.mcmelectronics.com/product/CAIG-LABORATORIES-AB-50-/200-288 > > Ken > WA2LBI > > > > On Fri, Dec 23, 2011 at 13:06, Dennis Monticelli > <dennis.montice...@gmail.com > <mailto:dennis.montice...@gmail.com>> wrote: > > I have found that 100% DeOxit dries more slowly than the 5% > stuff > because the latter is mostly carrier. So allow a little > extra time > before powering up, especially with pots. A few hours > should have > been enough, so it seems that you applied too much. I > almost always > use the 100% stuff but I avoid droplets. Instead I apply > the DeOxit > to one of those wooden stemmed tightly woven Q tips that are > made > especially for electrical cleaning. The Q tip then does > double duty > of applicator and scrubber. This works really well for > wafer switches > and tube pins. For socket pins, I use a wooden toothpick > that is > coated with DeOxit. Once again it serves as applicator and > scrubber. > The Q tip and toothpick end up with a satisfying dark > coloration of > oxides with this method. Sufaces will glisten after > cleaning but you > won't see any red pooling. > > With DeOxit a little goes a very long way. Mild scrubbing > with a > rough absorbant surface such as wood or tightly woven Q tip > physically > removes the dissolved oxides. > > Dennis AE6C > > > On 12/23/11, y...@aol.com <mailto:y...@aol.com> > <y...@aol.com <mailto:y...@aol.com>> wrote: > > Today I put a totally dead R-4a on the bench,replaced the > fuse and off she > > went. The rig was fairly clean considering its age. The > rig lit up and got > > some audio out and all functions seemed to basically work. > Cleaned the > > chassis of dust ,damp cloth and proceeded to pull all the > tubes and > > test,all were good. I took a emery board and cleaned all > tube pins then > > wiped the pins with Deoxit and dried with a cloth, also > cleaned all the > > wafer switch contacts with deoxit,using the tiny needle > bottle being VERY > > careful to keep the deoxit to the very small amount, also > cleaned all the > > pots with the deoxit spray for pots. > > Any way let the rig sit for a few hours working all > the switch's and > > pots. Reassembled the rig and powered up. The radio lite > up and that was > > about all ,nothing seemed to work, rechecked the tube > install,all correct, > > put back on the bench flipped the rig over and ALL the > tube sockets and > > wafer switch's looked like they were flooded with deoxit. > I was careful to > > use as Little as you could of the deoxit,while cleaning > everything. I then > > proceeded to clean EVERYTHING with 100 %alcohol, tube > pins,sockets, all > > wafer switch's and pots,made sure everything was dry, > using a hair drier. > > Put the rig back together and turned on,the R4A works as > well as my B line > > receiver,even without a alignment. > > Has there been a change in Deoxit? I have used this > procedure on lots > > of Boat anchors and up till now always worked fine. Can't > believe the TINY > > amount I used, crawled all over everywhere I didn't want > it to go. Unless > > someone else had used some other substance to clean before > me and the the > > deoxit ,I haven't got a clue. Anyone else run across > anything like this? The > > deoxit was brand new a week ago. I think I will star with > the 100% > > alcohol,like I used to use. > > everybody have a Merry Christmas > > dale wt4t > > > > _______________________________________________ > Drakelist mailing list > Drakelist@zerobeat.net <mailto:Drakelist@zerobeat.net> > http://mailman.zerobeat.net/mailman/listinfo/drakelist > > > > > _______________________________________________ > Drakelist mailing list > Drakelist@zerobeat.net > http://mailman.zerobeat.net/mailman/listinfo/drakelist > > > > _______________________________________________ > Drakelist mailing list > Drakelist@zerobeat.net > http://mailman.zerobeat.net/mailman/listinfo/drakelist _______________________________________________ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
