Yesterday we took out the PCB and today we will look at it for problems. The problem in our monitor was showing of random color tint and to solve this problem, re-soldering all the components was enough. So I will recommend anyone to first check for dry solder joints. If any of the main color like Red, Green or Blue is permanently missing then you need to replace the base (big white thing with lots of wholes) with a new one. If there is still any problem then driver IC (with heat sink) may also need replacement.

Time to do some work! Switch off all the fan and AC so that solder becomes quit hot for re-soldering job. Use flux (soldering paste) if required. I use it every time as we don’t get very good quality soldering wires easily here. After the re-soldering job, it’s good to clean the solder side of the PCB using old toothbrush and pure petrol (no addictive / oil mixed).

After doing re-soldering job, it’s time to put everything back. Place the PCB on the picture tube socket and plug all the wires that were attached to it. Solder the ground wires and put the protective casing back. Once again look at everything and make sure that wires are soldered to their respective points. Put the cover back, connect the monitor to computer and switch it on. As predicted, the problem was solved in our monitor and it was working perfect!

Some people will ask that why we did all this and why not just junked this old 15” monitor which is not even a standard now and purchased a TFT? Answer is to save earth! Yes, throwing electronics items and if it was not disposed off properly is hazardous as it causes lead poisoning for our echo-system. Even after this monitor is completely dead and becomes obsolete, what we do is use its components for repairing other electronic items!!

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This entry was posted on Monday, September 17th, 2007 at 6:55 pm and is filed under Electronics. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.