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Monitor Model
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The DELL E151FP LCD Monitor came in with no power symptom and upon opening up the cover I saw few components that were burnt. R623 (4.7 ohm) burnt at the side and you could still recognized the resistor color code. The current sense resistor (0.68 ohm) outer layer partly had came off and slightly burnt and the filter capacitor c605 (68uf 400v) one of the pins had became rusted and came off when I tried to desolder the pin.
This is not a new model and I believe lots of experienced techs had solved the problem. But for those who haven't come across this problem, you may use the procedure to troubleshoot and repair any other type of LCD Monitor with power problem.
I will first remove the power transformer and make sure it rings okay with dick smith flyback tester. I do this first because I don't want to waste my time checking other components and later only found out that the power transformer is the caused of the power problem. Once it rings okay I will measure all the secondary diode. For your information most LCD Monitor power supply widely used the dual schottky type diodes and the specification usually in the 10 to 20 amp with about 40 volts. However I do come across some designed are still uses the ultra fast recovery type diodes in the secondary section. Make sure you know how to check a normal diode and a schottky diode. Refer back to my website in the diode section and search for testing schottky diode article. I will then check for the ESR of electrolytic capacitors too.
Once I confirmed that the secondary side components are all tested okay, I would then proceed to remove all the components in the primary side. Some components in the primary side you can check on board like the bridge rectifier and fuse. If I'm new to the LCD Monitor model I would check all components off board (with a lead removed from board). With this way you will be sure that all components you have scanned through.
These are the components that I found defective; fuse-2A, R615-0.68 ohm, R613- 1K, R612-47 ohm, R623-4.7ohm, D604-1N4148, Q601-SSS6N60A, C605-68UF 400V and IC601-UC3842B. Total was nine components and it took me less than 20 minutes to check all the components in primary side. Now is the time to search for spare parts. After spending about 5 minutes in the spare part compartment I managed to find all components except the power fet SSS6N60A.
Though this part number is mostly used in switch mode power supply, my electronic supplier does not have this stock. I would then browse through the semiconductor databook to search for equivalent part number. From the book, it suggests to use the K1118 as replacement. After all components have put into their original place or location and of course with the power transformer soldered, I don't immediately switch on the power supply. I would first use a 100watt light bulb connected in series with the live line. The best place to put the light bulb is the fuse holder area. Remove one of the fuse lead and connect the light bulb across it. Power it on and begin to observe the bulb. If it brightly lit and stay that way then there is still problem in the power supply. However, if the bulb doesn't light at all then this is a good sign that the power supply may be working.
Use a multimeter to place at the secondary side with power on. If you get some accurate voltage reading from the outputs and the bulb doesn't light at all, then this confirmed that the power supply is working. Switch off the power supply and connect back the fuse and turn the LCD Monitor on again. I'm very sure the LCD Monitor will now work.
Whether you are troubleshooting the DELL E151FP LCD Monitor or other brands, you can always use the procedure given above to repair the power supply problem. This method can be even use to repair other types of power supply too. No matter what types of power supply you are troubleshooting, just make sure you know how to check and test the basic electronic components. If you ever miss one, sad to say you would not be able to solve the problem or it might just take you many of your precious hours to complete the job. Happy hunting!
Jestine Yong is a electronic repairer and a writer, for more lcd monitor repair information, please visit his website at http://www.electronicrepairguide.com/lcd-monitor-repair.html
Baby Monitors - Different Types And Information
Baby monitors are one of those must-have items for any conscientious parent. Baby monitors are used by millions of families all over the world as a device to help them watch over baby while they are in a different room. Baby monitors are available in a wide variety of styles, from audio monitors to models with video monitors and movement sensors.
Video baby monitors that have night vision mode will switch to this mode automatically in the dark. Video Monitors enable you to actually see and hear your child on a TV screen. Video baby monitors gives us the knowledge of two of our senses sight and sound verses the standard sound monitor which gives us only one. Video monitor models can include: automatic camera scanning, infrared night vision technology, LCD displays, multiple cameras, and various screen sizes. Video baby monitors let you view your baby without disturbing sleep or play. Video monitors provide more information than audio monitors, allowing parents to decide whether the baby needs attention or is just making noises while asleep. The camera then films him as he sleeps and when he cries the programme you're watching on television is automatically interrupted, and switches to the view of the baby video monitor. For more great advice on the best baby safety monitors and for baby monitor video reviews go to Baby Monitor Reviews.
As with any electronic gadget, there are an abundance of extra features that come with baby monitors, and a price range match. With all the extra features available, the selection of a baby monitor can be as difficult as choosing a name for your precious bundle of joy. Baby monitors continue to evolve and now also can utilize features such as night lights and built-in lullabies. While there are many places that perform the same service, few examine the features of each baby monitor in such detail.
There are two main baby monitor types, which are analog and digital. Analog monitors operate on a particular frequency band, much like a radio, sending signals from monitor to receiver in a straight shot. Analog monitors tend to be among the least expensive; however, they are also the most prone to interference. Analog baby monitors generally use the 49 mHZ or 900 mHz frequency, and it's a little like a radio channel in that you might get a lot of static and interference from other things nearby that are trying to use the same channel. Digital baby monitors use digital communication in their link between the mobile station and the base station. Digital monitors, on the other hand, encode the signal as it travels between the monitor and the receiver, making it nearly impossible for the sounds to be heard by others, and reduces the possibility of running into interference from other electronic devices. Digital audio wireless systems using DECT, are resistant to interference and have a range up to 300 m. Digital Monitors offer the utmost in privacy, as the signal is encoded so that no one else can hear.
Video devices have also taken advantage of the current technology of the Internet. Some baby monitors have video capabilities so are great for watching your baby from a remote location – maybe other room around the home or out in the garden etc.
Baby monitors are an easy and effective way to make sure your baby is safe even when you are out of the room.
About the Author
Nick Hampton
I am looking for a power cord for a Dell Flat monitor model number W1700
Bought a used monitor without the power cord
Odd, your monitor uses an AC adapter vs. standard 3-prong power.
Google is your friend.. search for "dell w1700 ac adapter" 
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