GENERAL OVERVIEW
CRT monitors also called a Cathode Ray Tube monitors are gradually getting out of stock in many developed countries today.
But the truth is that many people around the world still prefer using CRT monitors because of its durability though consumes higher than modern LED or Plasma screens.
Because CRT monitors can carry an anode voltage as high as 25KV (25,000 Volts) inside, it will be wise to have that voltage discharged before any repair work is proceeded.
Today, we shall be looking at ways to properly discharge these monitors without wasting too much time say 24 hours and up, as mentioned by some bloggers on the internet.
Yes! We can properly discharge this monitor in less than 5 minutes provided all the necessary tools and equipment are available your disposal as well as all steps followed correctly.
As a technician or a repairer, if you will need to make some internal repair to a CRT monitor, you must discharged it properly else you can get electrocuted.
The following 9 steps with pictures will guide us through the discharge process.
STEP 1: UNPLUG MONITOR/TV
Normally the first step to take is to unplug the monitor from the supply together with any other connections that were linked to it.
STEP 2: SAFETY WEARS
As a technician, you don’t need anybody to tell you about protective wears. Put on a rubber-soled shoes and safety goggles. Any jewelry should be taken off not to ground you in any way.
STEP 3: WORKING TOOLS
Get a heavy flat-bladed screwdriver with good insulation and a long-nose pliers if possible as well as a Star-head screwdriver to be used in unscrewing the monitor.
STEP 4: UNSCREW MONITOR
Carefully and gently unscrew the monitor to open the back cover. Remember to keep the screws in a safe place to prevent it from missing.
STEP 5: GROUNDING
Attach an alligator clip to the screwdriver’s metal shaft and the other alligator clip to a heat sink.
STEP 6: CHECKS
Make sure you are not in contact with anything metal.
STEP 7: DISCHARGING
Now slide the screwdriver’s blade under the suction cup until you hear a small sound and at times, no sound is heard and in some cases you’ll see a small blue flash. Wait for about 10 seconds before removing the screwdriver. The anode is a wire covered by a suction cup.
SEP 8: DISCHARGED
Congratulations!! You have successfully discharge the high voltage inside the monitor, now the last step to completely discharge the monitor before carrying out any repairs.
STEP 9: COMPLETELY DISCHARGED
Now use the end plug of your soldering iron to discharge the 400V capacitor as shown above.
CONGRATULATIONS
YES!!
You have successfully completed the anode discharge process. Now, leave a reply in the comments section. We will be pleased to know how you feel about this article.
THANKS for helping us achieve our mission of helping people to learn how to do it themselves.
