The way to Repair service Compaq seventeen” Liquid crystal display Check

The criticism of the 17″ Compaq Liquid crystal display Observe was shutdown immediately after few seconds to few minutes. Meaning the Show sometime will shutdown in couple seconds although someday it is going to shutdown in handful of minutes. When There’s a Show the picture worked correctly great until eventually it shutdown. The very first thing one would Ordinarily suspect is the defective backlight. To your information, a bad or possibly a weak backlight might cause this kind of challenge and dry joints might also lead to the reason for the fault.

Since I have a spare backlight, I swapped the LCD backlight While using the Performing one. It is not difficult to do it, just clear away the present backlight Best Monitor connector and connect The great backlight connector to it. I have examined one after the other the backlight and the result was the LCD Observe nonetheless shutdown intermittently. This has proved both of those on the LCD Watch backlights are alright! So now my concentration is looking for any dry joints from the LCD Keep an eye on.

I place again all The inner metallic casing like primary apart from the principle cover and change “ON” the Liquid crystal display Check. While at my remaining hand holding the LCD Observe, my suitable hand holding the shaft from the screw driver, I began to Carefully knock on the LCD Keep track of internal metal casing Using the handle from the screw driver. The moment I ‘strike’ it, the Liquid crystal display Observe went straight into shutdown. Wow! From the test I feel you would’ve regarded precisely what is the cause of the Liquid crystal display shutdown-it was dry joint.

Opening up the casing all over again, it is possible to clearly see 3 boards i.e. the power/inverter board, audio board and the principle board. I only suspect the ability/inverter board mainly because This can be the board that controls the backlights. What I did was resoldered the many elements from the inverter region besides the SMD components because SMD elements hardly ever have dry joints.

When I power “On” the Liquid crystal display Monitor and hit it Along with the cope with of your screw driver, the Watch all over again went into shutdown. I explained to myself “it cannot be” but in any case I’ve an exceptionally high self-assured the fault have to be during the inverter spot rather than in Major board or energy board. Up coming, I carefully hold the LCD panel and utilize a check pen to raise up the corner of your inverter board and power “On” the Monitor. Guess what happen? The Watch did not shut down While I ‘strike’ a little bit tricky about the steel casing. This once more proved that the issue is somewhere while in the inverter region.