If you’re using a mechanical keyboard and one or more of your keys aren’t working, there are some things you can try to fix it. First, check for any debris under the keycaps. This includes dirt, dust, crumbs, and other unwanted trash.
Dead Keys
Dead keys are a common problem with a mechanical keyboard. A dirty switch typically causes them but can also result from a more significant electrical problem. In either case, the solution is simple: you can remove and replace the key with another. First, ensure you have all the tools needed to perform this task. Generally, you’ll only need a screwdriver and a pencil. Your specific make and model will determine whether you need a slot- or Phillips-head screwdriver.
Once you have your tools out, open up the case. It’s best to do this as carefully as possible not to damage any of the electronics inside. First, identify the unresponsive key. You can do this by looking at its shape and comparing it to the other keys on the board. Then, pry it off the board to avoid damaging anything. After removing the key, clean it thoroughly. This will help ensure that the key is conductive and will not need to be replaced.
While cleaning, remember to check the rubber strip under each key. This is a vital piece of the circuitry that allows key conductivity. If the rubber strip is missing, you must reattach it with a replacement kit. Next, apply contact cleaner to the dead keys. This will dissolve any oily residue causing the switch to stop working. Once the key is cleaned, you can reattach it to the board. You may need to use a key retainer to hold it in place and offer flexibility as you reinsert the key.
If the key doesn’t reattach, you can try resoldering and soldering in another. This will take some time, but it should work in the end. If you need help repairing the keyboard, it may be worth taking it to a computer repair store. They should be able to identify the issue and recommend the right solution for you. They may also be able to replace the keyboard altogether if the issue is too complex to fix.
Damaged Membrane
If your membrane keyboard has been damaged, it is important to take proper care of it. This will help you avoid costly repairs or replacements in the future. The first step is to examine your keyboard for any signs of damage. It is especially important to check the keys that do not work. This will ensure that a broken keycap does not cause a problem. Once you have identified the problem, you can begin repairing it. If you have a mechanical keyboard, this can be accomplished by removing the keys and replacing them with new ones. However, this will be more difficult if your keyboard is a membrane one.
It is also important to dry the keyboard off before attempting to repair it. This will help prevent mold from forming and help you avoid further damage to the keyboard. You should also avoid exposing the keyboard to water and other liquids, as this can cause the switches to degrade. In some cases, this can result in a total loss of functionality for your keyboard. Another common reason why a keyboard’s membrane can be damaged is due to a crack. A cracked membrane can prevent the keys from working properly and make typing difficult. This can happen due to an accidental drop or when the keyboard is exposed to heat from a hot computer. A crack will usually be visible on the key itself or at the bottom of the membrane. If your membrane keyboard has a crack, fixing the damage as soon as possible is important.
There are several ways to fix a cracked membrane keyboard. The most effective is to spread a thin layer of silver lacquer over the cracked keys and conductor traces. This can be done with a toothpick or other long, thin device. The silver lacquer will bridge the broken conductor traces and allow the keys to work again. Using the lacquer sparingly and only on the keys that do not function properly is important.
Solder Joints
Soldering is one of the simplest and most basic skills in electronics. It can be learned by anyone who wants to do so, and it is an important skill for anyone working on an electronic project. Solder joints are what hold circuit boards together and make them electrically conductive. They also keep the circuit board from being damaged by short-circuiting, so solder joints must be adequately prepared and repaired. There are a few different types of solder joints, each with its specific characteristics. A good solder joint is a reliable electrical connection that will not break down over time.
A solder joint with a poor electrical connection is called a “solder bridge.” This condition can easily be fixed by adding more solder. It can also be prevented by using only enough solder to form a solid joint. Another common problem is a solder joint that has yet to melt completely. This condition is often referred to as a “cold joint.” Cold joints are not as strong as warm ones and may develop cracks over time. This can be easily fixed by reheating the joint with a hot iron and applying more solder. The reheating process will cause the new solder to flow evenly and prevent it from oxidizing.
Alternatively, you can apply fresh flux to the joint and reheat it until it flows again. This process can be repeated many times until the joint is strong. A solder joint that does not wet the pin or pad adequately can be caused by a dirty circuit board, a lack of soldering practice, or simply not applying enough heat to the pin or pad. This can be corrected by heating the pad and pin with a hot iron until the solder flows to cover them. Overheated solder joints are also a problem and can be fixed by carefully scraping off any excess solder or burnt flux residue with a knife or a toothbrush. In addition, a clean, hot soldering iron and proper preparation and cleaning of the board can help to prevent this issue from occurring.
Final Thought
If you’ve got a keyboard that has trouble with double typing or chatter, it could be due to a bad switch. There are a few different ways you can fix this issue. One way is to clean the key with canned air. The other is to replace the switch.
