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 Circuit Breaker 15A 125VAC Fuse Replacement NEW US $1.99 
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Fuse Replacement
Using This Type Of Way You Will Make Sure That All Elements You Have Got Scanned Through
The DELL E151FP LCD Keep track of came in without any power symptom and upon opening up the cover I noticed couple of elements that were burnt. R623 (4.7 ohm) burnt in the aspect and you can nonetheless recognized the resistor color code. The current sense resistor (0.68 ohm) outer layer partly had arrived off and marginally burnt as well as the filter capacitor c605 (68uf 400v) one of the pins had grew to become rusted and arrived off when I attempted to desolder the pin.
This is not a new model and I think plenty of experienced techs had solved the problem. But for those that have not run into this problem, you may make use of the process to troubleshoot and restore another kind of LCD Monitor with power issue.
I'll initially eliminate the power transformer and be sure it rings alright with dick smith flyback tester. I do this first for the reason that I don’t wish to waste my time checking other components and later only found out that the energy transformer is the caused in the energy dilemma. When it rings alright I'll measure all the secondary diode. For the facts most LCD Keep track of power supply broadly employed the dual schottky type diodes as well as the specification typically inside the ten to 20 amp with about forty volts. Nevertheless I do encounter some created are nonetheless uses the ultra fast recovery sort diodes inside the secondary segment. Be certain you know the best way to examine a regular diode plus a schottky diode. Refer again to my web-site in the diode section and search for testing schottky diode post. I'll then check for that ESR of electrolytic capacitors as well.
Once I confirmed the secondary facet components are all tested alright, I'd then move forward to get rid of all the elements in the main aspect. Some components in the main facet it is possible to examine on board like the bridge rectifier and fuse. If I’m new towards the LCD Keep track of product I'd check all components off board (with a lead eliminated from board). With this particular way you can make sure that all components you've got scanned via.
They are the components that I located 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. Whole was nine elements and it took me much less than 20 minutes to check all of the components in primary aspect. Now will be the time to search for spare parts. After spending about five minutes within the spare part compartment I managed to obtain all elements other than the energy resistor color code. Though this portion amount is primarily utilized in swap mode power provide, my digital supplier doesn't have this stock. I would then browse by means of the semiconductor databook to search for equal part amount. From your book, it indicates to use the K1118 as replacement. After all components have place into their authentic spot or place and needless to say with the power transformer soldered, I don’t right away change around the energy supply. I would first make use of a 100watt light bulb linked in series with the live line. The most beneficial spot to put the light bulb is the fuse holder region. Get rid of among the fuse lead and link the light bulb across it. Energy it on and begin to observe the bulb. If it brightly lit and stay that way then there's nonetheless difficulty inside the power provide. Nevertheless, when the bulb does not light at all then this is a wonderful signal the power supply might possibly be functioning.
Utilize a multimeter to location in the secondary facet with energy on. When you get some correct voltage reading through the outputs and the bulb doesn’t light at all, then this confirmed the power supply is functioning. Swap off the power supply and link back again the fuse and flip the LCD Monitor on once more. I’m quite certain the LCD Monitor will now work.
No matter whether you might be troubleshooting the DELL E151FP LCD Keep track of or other brands, you can normally make use of the procedure given over to restore the power provide trouble. This method can be even use to repair other types of energy supply too. No matter what forms of energy provide you're troubleshooting, just make sure that you know tips on how to check and check the basic electronic components. When you ever miss 1, depressing to say you'd not have the ability to solve the problem or it may just consider you a lot of of your valuable several hours to complete the work. Pleased hunting!
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