Problem Keyboard: Troubleshooting The Keyboard...

Because of the low cost of keyboards, most often if a keyboard does not work, the best solution is to replace it. However, there are a few simple things you can do to repair a keyboard that is not working. The following minor symptoms are most likely causing keyboard to not working properly;

A FEW KEYS DON'T WORK

• Remove the cap on the bad key with a chip extractor, Spray contact cleaner into the key well. Repeatedly depress the contact to cleat it out. Don't use rubbing alcohol to clean the key well, as it can add a residue to the contact.
• If this method of cleaning solves the problem, then clean the adjacent keys as well.
• Turn the keyboard upside downand bang the key tops to dislodge debris.

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THE KEYBOARD DOESN'T WORK AT ALL

• Is the cable plugged in securely?
• Exchange the keyboard for the known good one.
• If the problem is in the keyboard, if possible, swap the existing cable with a cable known to be good, perhaps from an old, discarded keyboard. Accomplish this task by removing the few screws that hold the keyboard case together, then unplugging the cable. Be careful as you work, don't allow the key caps to fall out!
• For a keyboard proven to be bad, if the problem is not the cable, discard the keyboard
• If the problem is with computer consider the following; On the system board, the two chips that affect the keyboard functions are the keyboard chip and the ROM BIOS chip, You might choose to swap each of these chips on the system board. Otherwise the entire system board may have to be replaced.

KEY CONTINUES TO REPEAT AFTER BEING RELEASED

The problem may be a dirty contacts, Some debris has conductive properties and can therefore short the gap between the contacts, causing the key to repeat. Try cleaning the key switch with contact cleaner.
Very high humidity and excess moisture may short key switch contacts and cause key to repeat. The problem will usually resolve itself once the humidity level returns to normal You can hasten the drying process by using a fan (not a hot hair dryer) to blow air at the keyboard.

KEYS PRODUCE THE WRONG CHARACTERS


This problem is usually caused by a bad chip on the keyboard. Try swapping the keyboard for one you know is good. If the problem goes away, replace the original keyboard with a new one

A MAJOR SPILL ON THE KEYBOARD

For major spills on the keyboard, thoroughly rinse the keyboard in running water, Give the board about two days to dry. You can speed up the process if you set it out in the sun of in front of a fan.