How To Restore Compaq 17" LCD Monitor
The criticism of this 17" Compaq LCD Monitor was shutdown after few seconds to few minutes. That means the display sometime will shutdown in few seconds while someday it can shutdown in couple of minutes. When there is a show the picture worked completely good until it shutdown. The first thing one would usually suspect is the faulty backlight. For your data, a bad or a weak backlight may cause such drawback and dry joints may contribute to the reason for the fault.
Since I've a spare backlight, I swapped the LCD backlight with the working one. It's easy to do it, simply remove the prevailing backlight connector and connect the great backlight connector to it. I've tested one after the other the backlight and the consequence was the LCD Monitor still shutdown intermittently. This has proved each of the LCD Monitor backlights are okay! So now my focus is searching for any dry joints in the LCD Monitor.
I put back all the inner metal casing like authentic except the principle cowl and swap "ON" the LCD Monitor. While at my left hand holding the LCD Monitor, my right hand holding the shaft of the screw driver, I started to gently knock on the LCD Monitor inside metal casing with the handle of the screw driver. The second I 'hit' it, the LCD Monitor went straight into shutdown. Wow! From the test I imagine you'd have identified what's the reason for the LCD shutdown-it was dry joint.
Opening up the casing once more, you'll be able to clearly see three boards i.e. the ability/inverter board, audio board and the Major board. I solely suspect the facility/inverter board as a result of that is the board that controls the backlights. What I did was resoldered all the elements within the inverter area except the SMD elements because SMD components rarely have dry joints.
When I energy "On" the LCD Monitor and hit it with the deal with of the screw driver, the Monitor once more went into shutdown. I told myself "it may possibly't be" but anyway I have a very high confident that the fault should be within the inverter area and not in Primary board or energy board. Next, I fastidiously maintain the LCD panel and use a test pen to lift up the corner of the inverter board and power "On" the Monitor. Guess what occur? The Monitor did not shut down despite the fact that I 'hit' a bit bit laborious on the steel casing. This once more proved that the problem is somewhere within the inverter area.
I opened up again the metal casing and carefully scanned by means of the entire parts in the inverter area-it seem like I have already applied contemporary solder to it. It was only the feedback circuit which have SMD parts that I have never solder. I used a magnifier glass to verify if there are any dry joints in all of the feedback parts but I don't see any. I went ahead to resolder all the SMD parts in the suggestions circuit and power "On" the Monitor. To my stunned, the LCD Monitor no more shutting down irrespective of which means or how I tapped the LCD Monitor with the handle of the screwdriver. I put the LCD Monitor for a lot of hours of burn in take a look at and it simply labored great. I have despatched again the LCD Monitor to my customer and until now after couples of days there is no name from my customer.
Conclusion - Do not overlooks the dry joints in SMD components. Each half within the electronic board is usually a suspect. Hope from this article you may get some ideas about solving intermittent downside in LCD Monitor.
Compaq 17" LCD Monitor How To Repair
The criticism of this 17" Compaq LCD Monitor was shutdown after few seconds to few minutes. That means the display sometime will shutdown in few seconds while someday it can shutdown in couple of minutes. When there is a show the picture worked completely good until it shutdown. The first thing one would usually suspect is the faulty backlight. For your data, a bad or a weak backlight may cause such drawback and dry joints may contribute to the reason for the fault.
Since I've a spare backlight, I swapped the LCD backlight with the working one. It's easy to do it, simply remove the prevailing backlight connector and connect the great backlight connector to it. I've tested one after the other the backlight and the consequence was the LCD Monitor still shutdown intermittently. This has proved each of the LCD Monitor backlights are okay! So now my focus is searching for any dry joints in the LCD Monitor.
I put back all the inner metal casing like authentic except the principle cowl and swap "ON" the LCD Monitor. While at my left hand holding the LCD Monitor, my right hand holding the shaft of the screw driver, I started to gently knock on the LCD Monitor inside metal casing with the handle of the screw driver. The second I 'hit' it, the LCD Monitor went straight into shutdown. Wow! From the test I imagine you'd have identified what's the reason for the LCD shutdown-it was dry joint.
Opening up the casing once more, you'll be able to clearly see three boards i.e. the ability/inverter board, audio board and the Major board. I solely suspect the facility/inverter board as a result of that is the board that controls the backlights. What I did was resoldered all the elements within the inverter area except the SMD elements because SMD components rarely have dry joints.
When I energy "On" the LCD Monitor and hit it with the deal with of the screw driver, the Monitor once more went into shutdown. I told myself "it may possibly't be" but anyway I have a very high confident that the fault should be within the inverter area and not in Primary board or energy board. Next, I fastidiously maintain the LCD panel and use a test pen to lift up the corner of the inverter board and power "On" the Monitor. Guess what occur? The Monitor did not shut down despite the fact that I 'hit' a bit bit laborious on the steel casing. This once more proved that the problem is somewhere within the inverter area.
I opened up again the metal casing and carefully scanned by means of the entire parts in the inverter area-it seem like I have already applied contemporary solder to it. It was only the feedback circuit which have SMD parts that I have never solder. I used a magnifier glass to verify if there are any dry joints in all of the feedback parts but I don't see any. I went ahead to resolder all the SMD parts in the suggestions circuit and power "On" the Monitor. To my stunned, the LCD Monitor no more shutting down irrespective of which means or how I tapped the LCD Monitor with the handle of the screwdriver. I put the LCD Monitor for a lot of hours of burn in take a look at and it simply labored great. I have despatched again the LCD Monitor to my customer and until now after couples of days there is no name from my customer.
Conclusion - Do not overlooks the dry joints in SMD components. Each half within the electronic board is usually a suspect. Hope from this article you may get some ideas about solving intermittent downside in LCD Monitor.
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