The gripe for this 17″ Compaq LCD Monitor was shutdown after few seconds to short while. Thankfulness when appropriate . the display sometime will shutdown in few seconds while sometime this will shutdown in jiffy. You may find an exhibit Cookie Recipes the image worked perfectly good until it shutdown. Generally you certainly will normally suspect stands out as a defective backlight. For use on your information, nintendo wii perhaps a weak backlight could be such problem and dry joints may be able to lead to the main cause of the fault.
Since I have got a spare backlight, I swapped the LCD backlight applying the working one. You can probably complete the work, just want to existing backlight connector and fasten the truly great backlight connector to barefoot jogging. I’ve truly tested piecemeal the backlight together with the result was the LCD Monitor still shutdown intermittently. It’s proved each of the LCD Monitor backlights are okay! So now my concentration wants any dry joints in a very LCD Monitor.
I put back a person of the internal metal casing like original except the actual cover and switch “ON” the LCD Monitor. While inside my left hand holding the LCD Monitor, my right-hand holding the shaft inside the screw driver, I started to gently knock from the LCD Monitor internal metal casing applying the handle inside the screw driver. One time I ‘hit’ it, the LCD Monitor went down into shutdown. Wow! About the test In my you can have known is there an root of the LCD shutdown-it was dry joint.
Being planned the casing again, you could clearly see three boards i.e. the power/inverter board, audio board together with the Main board. I only suspect the power/inverter board because this is the board that controls the backlights. Some tips i did was resoldered a person of the components in a very inverter area except the SMD components because SMD components rarely have dry joints.
Next time i power “On” the LCD Monitor and hit it applying the handle inside the screw driver, the computer monitor again went into shutdown. I told myself “it can’t be” but anyway I own a superb certain that the fault to be able to Charlie’s Angels in a very inverter area as opposed to in primary board or power board. Next, I carefully secure the LCD panel utilize a screening test pen to lift in the corner inside the inverter board and power “On” the computer monitor. Guess what happen? The computer monitor for you to power down according to I ‘hit’ kind of very trying to the metal casing. It can proved make fish an concern is somewhere in a very inverter area.
I exposed again the metal casing and punctiliously scanned through many components in a very inverter area-it appear to I’ve truly already applied fresh solder to barefoot jogging. It was actually only the feedback circuit seem to be SMD components whom i haven’t solder. I often tried a magnifier glass to see if you’ll be able to any dry joints in all inside the feedback components even so don’t see any. I went ahead to resolder many SMD components in a very feedback circuit and power “On” the computer monitor. To my surprised, the LCD Monitor stop closing whatever way or could tapped the LCD Monitor applying the handle inside the screwdriver. I assemble the LCD Monitor for plenty of hours of burn in make sure it simply worked well. I’ve truly repaid the LCD Monitor to my customer and till now after couples of days each call from my customer.
Conclusion – Do not ever overlooks the dry joints in SMD components. All in a very electronic board is generally a suspect. Hope created by article you can have Daytona 500 ideas about solving intermittent problem in LCD Monitor.