Hosa D5S-6 CAIG DeoxIT 5% Spray Contact Cleaner, 5 oz.

Take a look around. Okay, here's why I gave it a bad rating. While we all know how good DeOxit D5 is, it appears that the creators agree. br>I'm not sure if they switched to the new NON ADJUSTABLE can because it's cheaper or because they want us to throw away this expensive chemical. It's most likely a combination of the two. While DeOxit is fantastic, this can is completely ridiculous. I'm a professional audio engineer and the owner of a vintage hi-fi restoration business. I go through at least 25 cans per year. If that wasn't bad enough, the new non-adjustable can just wastes the stuff. Your gear is also flooded. While I've devised a method for lightly spraying it, it's ineffective. br>I discovered a new source for the vintage adjustable can. Just double-check that's the can you're getting. It will literally last ten times as long. br>As a result of DeOxits poor business practices, I'm currently experimenting with new products. br>I'm not going to take it any longer. They are well aware of their actions, and I am not pleased. Neither are the other 50 or so technicians with whom I'm friends. br>A team of us at wtesting is putting every product on the market to the test to see what works. DeOxit may have a monopoly on contact cleaners for the time being, but that won't last long. br>We'll be adding our findings to every review on the internet and in forums. br>Also, you MUST use a lubricant like FaderLube after using DeOxit D5 or you'll ruin those pots! I'm serious. Before you wreck this vintage gear, make sure you know what you're doing. br>Once it's gone, there's no going back. br>Knowing what you're doing isn't the same as being able to point and spray. Learn from someone who knows what they're talking about, or learn from someone who knows exactly what they're talking about. br>I'm sick to death of what I'm seeing these days. Back jobs can be found all over the place. Beware.

London Friedman

| Jul 08, 2021

It's bad enough that there's only one nozzle and tube. It's made of flimsy plastic, and the tube's diameter is too large, preventing precise Deoxit placement. I removed the button because I found it difficult to press hard enough to release the product. When I did, I discovered that a large amount of Deoxit had accumulated beneath the top and had spilled all over my carpet: I replaced it with a standard nozzle I salvaged from another lubricant can, and it works much better now.

Anahi Willis

| Jun 21, 2021

What you see in the picture is not what you get. The "new" model has a single-speed spray and a large spray head with only one setting: maximum. Without a doubt, it will quickly drain the can and simply sprays too much out at once, perhaps in the hopes of selling more product because you will use it up much faster.

Luella Chaney

| Apr 25, 2021

Sansui 5000x that has been restored. The extended nozzle made accessing difficult-to-reach areas a breeze. I'm not sure what people meant when they said spraying should be done at full volume. Simply don't press it all the way down dummy, and you'll be able to control the amount that comes out. It would drizzle a little after spraying, which I took advantage of by simply placing it over the areas that needed cleaning. It doesn't get any more precise than this, and it helped me avoid overspraying and causing a mess. Simply use this instead of the autozone contact cleaner. There is no longer any static on the volume, bass, or treble controls. The FM radio is now functional. Static has also been removed from push button selectors such as loudness, hi filter, lo filter, and the power button. Even the sound quality appears to have improved by a factor of two. Don't waste any more time and go out and buy it. I didn't even use a smidgeon of this spray. Hopefully, it will last a long time.

Aaron Hayes

| May 11, 2021

The amount that comes out can no longer be adjusted, and the valve leaks, pooling liquid around the valve and spilling when the can is tilted. For professional use, this is a huge no-no.

Lionel Clark

| Sep 07, 2021

"Stupid big clumsy hose" is a better name for the new "smart straw. " DeOxit is far too large to be sprayed precisely into pots, which is one of its primary uses. Spray volume is difficult to control. It was just a pointless "improvement" that wasn't required.

Rylan Flynn

| Sep 30, 2021

I've been using this product in some form or another since the mid-'70s, and it's fantastic. br>br>I first learned about it in a magazine called Audio Amateur, and a similar product at the time was called Cramolin. It was available in red and blue, just like DeoxIT. The blue is/was a preservative for newly manufactured contacts, while the red is/was a cleaner and preservative; the blue may provide longer/better protection, while the red is better for cleaning and restoring oxidized contacts. br>br>You can clean contacts with the red, then remove it, then treat with the blue to get the best protection for already oxidized contacts, but in practice, the red alone works so well that cleaning and treating the contacts in one step with just the red is extremely effective. As a result, I use about one blue can for every ten or more red cans. Most people only require the red (D) variety for most applications. I don't want to give the impression that I go through cans upon cans of the stuff, but I do use a lot more than most people because I work in the electronics industry. br>br>As several other reviews have stated, most jobs only require a small amount of it. Even for someone who is constantly working on a large amount of equipment, a single can will last a very long time. br>br>After seeing how well it worked with audio connections and potentiometers, I told my colleagues at the electronics firm where I worked about it. The technicians and engineers were all blown away, and it quickly became a standard. Various telemetry and process control equipment was designed, manufactured, installed, and serviced by us. A lot of this equipment, as well as equipment made by others that we were called to service, was used in corrosive environments such as the oilfield, refinery, water/wastewater treatment, laboratory, and other places where hydrogen sulfide, chlorine, hydrochloric acid fumes, and other corrosive gases are present, causing a slew of contact-related issues. br>br>Over the years, it's proven to be extremely effective, and while the name and formula have changed since the "Cramolin" days, the new stuff appears to be just as effective. br>br>I've also used it on very high voltage connectors, and one of its amazing properties is that it doesn't break down and cause leakage or flashover when used on high voltage systems, even though it improves contact integrity and lowers contact resistance dramatically. I've been using it on photomultiplier tubes and Geiger tubes (radiation survey and monitoring equipment) for years and have never had any issues. Bias voltages in these systems typically range from 900 to 1500 volts, but they can occasionally reach 2500 volts. br>br>A great example of how it works is a project we did many years ago with a batch of very old thermal self-cleaning ovens. circuit breaker devices in a system must be reset The issue was that the contacts were silver. Silver is the best conductor of all the elements, but it is also the most reactive and easily oxidizes (tarnishes). These gadgets were "non-removable" and sealed. "Reparable. " Their contact resistance, on the other hand, was excessive. br>br>I made a solution of Cramolin Red and a solvent (probably Freon TF back then), put it in a glass jar, and dropped these breakers into it, submerging them until the bubbles stopped coming out to ensure they were completely flooded with the solution. We then took them out, drained the fluid, and rapped them on a desk about a dozen times to make the contacts inside "jiggle" a little. That was sufficient to allow the Cramolin to pass through the closed contacts. br>br>When resistances were measured before and after treatment on a number of these breakers, they ranged from 100 to 200 milliohms. The typical resistance was reduced to around 6 milliohms after treatment! Because of the high current and low voltage these devices had to carry, the voltage drops across them were unacceptably high, but they worked perfectly after treatment. And it stayed that way for a long time. br>br>Other contacts that would have heated up and caused other issues prior to treatment operated cool and with very low voltage drops after treatment. br>br>Over the years, I've used this stuff to "repair" a slew of potentiometers, switches, and various connectors. br>br>It's called "Technician in a Can," and it's true to its name. I pre- Treating a large number of contacts before crimping them onto their wires reduces mating forces and increases connector reliability. br>br>It's truly one-of-a-kind. It's essential for technicians, manufacturers, audiophiles, and others; if I had a 55-gallon drum full of it, I could take the entire pre-production process with me. dunk it in amps and other audio gear to fix all of the bad switch contacts and pots in a single operation )br>br>The only minor issue is that it will flush away the viscous goo that's often used to give a potentiometer a "silky" feel when rotating, as with any contact cleaner that contains (or is nothing but) a solvent. So, if you want to keep the grease in the annulus, it's best not to let any get to the shaft/bushing part of the pot when treating it. br>br>However, simply placing the pot on the resistive pad and running it back and forth a dozen times or so is often enough to completely fix a "scratchy" pot. br>br>As with so many other things, manufacturers seem to have a thing for silver-plated pot wipers. Bad idea! However, this is a very common situation. Because silver oxide is an insulator, the pot will sound terrible once that wiper tarnishes. The DeoxIT usually removes the oxide layer by rotating the pot a dozen or so times, and then coats the wiper and resistive element, preventing future issues and leaving the pot working/sounding great. br>br>Anyway, all I have to say is that this product has served me well for nearly 40 years and that I highly recommend it.

Jeremy Alvarez

| May 28, 2021