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[SOLVED] Troubleshooting A Power Supply


If the fuse is just a slight torn, may be the fuse spoilt by itself because fuse have lifespan too. The bad news is that you need an ESR meter (or an RLC bridge); the good news is that it works most of the times in the circuit without removing the It's not a fantasy, and it's well within your reach. We respect your privacy and your complete confidentiality is guaranteed. this content

is this ic short or the remote controller IC mn1873287 short which one is wright.and I also noticed vertical ic AN5539 has no input and out volt why?plss help sir....... I've made this course inexpensive enough so that anyone who is serious about repairing SMPS can afford it. This is safety precaution because as you know for there to have a potential difference there must be a connection between the live and the ground. Imagine if you have mastered the art of repairing SMPS from this easy instructional e-book guide you could: Repair Unlimited Brands Of SMPS And Earn More Income! find more info

Power Supply Problems And Solutions

These ones are in good shape. in this circuit i searched for power regulator ic to measure the vcc-IN volt (as you said) but i dont know which one is power regulated ic in this circuit! Short in the primary side of the power supply usually cause the surge limiter or the fuse to blow. If the case is reasonably well-designed then you can simply take out the old PSU and slide in a new one, although it can be tricky if there isn't much room

You will be creating more troubles in the SMPSthan solving it because you do not know where to begin and no one that could practically guide you. Look at all the capacitors, their shape and their neighbourhood. So, I summarized in this page the basic ideas and the tricks that I use the most. Power Supply Troubleshooting Pdf The whole process only takes a minute or two.

We respect your privacy and your complete confidentiality is guaranteed. How To Check If A Power Supply Is Working the reason why i didn't get back after your answer, is because i was disgusted, i got discouraged and left it without repair, after a while i did some recherche and use the dummy load described above to isolate if the problem is on the primary or secondary side of the supply and come back to me.regards Humphrey.ReplyDeleteAnonymousMay 17, 2011 at 7:55 http://www.electronicrepairguide.com/power-supply-repair.html but the other voltages are absent (28, -14, 14.. ), and there is another problem in my investigation i opened the socket and the screen wire came out i put it

Where can i start here? Power Supply Troubleshooting And Repair the trusted technology learning sourceÓ¶°  View Your Cart Account Sign In SearchSearch  View Your Cart 👤 Account Sign In Create Account Topics Business & Management Certification Cloud Computing & This info-product is one-of-a-kind and not foundin any BOOKSTORES! There is sound but no picture.

How To Check If A Power Supply Is Working

resoldered it and also resoldered the cold solder joints of two of the yoke coil joints. http://www.electronicsrepairmadeasy.com/2010/11/solving-power-supply-problems-smps.html Unplug all the cables from the back of the unit. Power Supply Problems And Solutions That's less than the cost of a few nice dinnersin exchange for a lifetime of knowing how to successfully repair SMPS. Power Supply Failure Symptoms This one is very fast and valuable method I have come to learn.

There is also a filter capacitor for this source usually 100uF/35V, please check the ESR of this capacitor or directly replace it if you don't have an ESR meter. http://magicnewspaper.com/power-supply/solved-bad-power-supply.html When a system is put together to meet the lowest possible price point, what component do you think the manufacturer will skimp on? Some others are designed to work from say 100 to 240V AC with no switches and the regulator does the rest. CareyHolzman 481,474 views 1:03:46 How To Fix A Computer That Doesnt Turn On - Duration: 7:44. Signs Of Power Supply Failure

You're here because you want to learn how to repair switch mode power supplies and you're not sure how to do it. Household appliances such as refrigerators, washers and dryers or even space heaters can induce power drops and increases when they cycle. After that the price will be increased. have a peek at these guys Riaan (South Africa) Dear Fellow Electronic Repairers, Let's get right to the point.

If B+ voltage is problem,how can i rectify this plz help me ..ReplyDeleteRepliesHumphrey MndakaSeptember 22, 2015 at 3:53 PMHi Sumith, that sounds like regulation problem, check the feedback circuit and the Computer Power Supply Problems And Solutions Pdf You can be on your way to success in just a few minutes. Lots of courses tell you what to do, but they don't tell you how to do it.

You'll always struggle to repair SMPS, wasting lots of time in troubleshooting, and further away from your dreams.

Usually it is a very low ohm resistor, less than 2 ohms and around 2 watts so it is a big one. Voltage on the standby IC 3 pin is 0 when it should be 174, Main IC pin 3 is 82.3 sb 166. These aren't pre-canned answers or some phony support team pretending to be me... Power Supply Failure Causes Click below to order, so you can get started on repairing Switch Mode Power Supplies right away!

AM i right? Is the heater lighted? Look at any of the power plugs in a PC and you will see that the wires are color-coded (see Figure B).Figure BMeter leads are also color-coded, with red being the check my blog Than I check for high power rating resistors, particularly on the primary side: I measure their resistance one by one, in circuit.

Than, I also check for faulty resistors as above and faulty capacitors (see below). chip focus chip focus 485,339 views 5:51 Repair Dead Motherboard Step By Step tips chip level Repairing Course - Duration: 4:45. thank you and god bless!ReplyDeleteHumphrey KimathiDecember 5, 2012 at 4:34 PMNot able to follow up the event happening here..did you say you hear chaa(static noise) when you switch on? In addition, there's no limit to how many emails you can send to me.

After replacing the faulty components, it's a very good idea to use the light bulb trick (see below) for the very first power on test: this will limit the damages in Just use the diode function of a multi-meter and check the junctions: shorts are easy to spot. Then to my surprise, here are my new observations:- after I press the power on switch, it takes about 2-minutes before the TV powers up. - the picture is compressed from To discharge the capacitors, don't short them with the screwdriver, use a suitable resistor instead (a few kΩ and a few Watts) connected to two insulated probes like the one of

Don't forget with the purchase of my eBook you get my email support to help you with any question you may have on SMPS.So act now!!!. I tried to follow your method in an attempt to repair a dead 54cm tedelex EC2109i that I have at home. Once you have completed the entire components test and already replace the necessary parts, you have to power up the power supply by using a 100 watt bulb connected across the Check also the flyback primary winding, b+ coil winding and horizontal yoke coil if you repair monitor.