Troubleshooting & Repair Information for Newer LED and 3D Flat Screens


If you’ve been following this site for a while now and are wondering if the TV repair courses (like the training programs created by electronics expert Kent Liew & Jestine Yong) that I’ve featured in the past would still be applicable to today’s newer crop of flat screen TVs like the newer, more impressive LED and 3D televisions then I think that you’d be happy to know that yes indeed, this training course now include information that will enable you to understand, troubleshoot and repair newer television display technologies.

Attention-LCD TV Membership copy

Is there a big difference between LCD and LED TVs?

The transition should be easier than most people think because the newer technologies are only built upon the innovation on previous implementation of the older technologies. Case in point are the so called LED flat screens of today. Not all people know that these are simply applications of improved LCD back-lighting technologies using smaller, lighter and more energy efficient LEDs (light emitting diodes). These devices still use LCD screen displays but instead of the older CCFL* back-lighting, they use LEDs. And since LEDs are more compact, these enable designers to come up with slimmer and lighter models (check out “edge-lighting models”) that we see a lot today. Take note: LED TVs are simply LED back-lit LCD TVs and while manufacturers seem to package these things as newer technologies, one is simply the progeny of the other. In fact, for the sake of transparency, regulation should direct all manufacturers to categorize them as “LED LCD TVs” in the packaging! 🙂

The same goes for 3D flat screen TVs as these are basically the same LCD screens re-designed and modified for 3D viewing.

Hence, the same troubleshooting and repair principles should apply to these newer display screens and it should be easy for most electronics repair people to transition.

>>>>> Visit Kent Liew’s LED & 3D TV Repair Training Resource Site <<<<<

*CCFL – cold cathode fluorescent lamp



The Best Repair Guide to Any LCD Flat Screen TV Brand!


Learning to repair electronics like flat screen LCD televisions used to be just within the realm of classroom or workshop-type teaching which you needed to attend for weeks or months (or even years if you’re taking a college degree in electronics-related courses). However, with the emergence and dominance of the Internet as an avenue for exchange of information, it has also become apparent that online learning courses has become a major option when it comes to learning new things. Even technical courses like learning software development through online tutorials and guides to learning how to fix video game consoles to figuring out how to troubleshoot and repair LCD TVs and other flat screen monitors or displays are now being offered via Internet correspondences and avenues.

Take the case of Kent Liew’s increasingly becoming popular LCD TV Repair course which has been providing quality technical and practical information on how to fix LCD televisions through a membership platform. When you join the membership learning community, you get access to tons of information compiled in a database structure. If you are a beginner or a novice in troubleshooting electronics, you can start with his step-by-step instructional materials which teach all the basics of LCD TV technology. You will get familiarized with the fundamentals that you will need to become a bona fide flat screen display technician.

If you are already an intermediate to expert TV repairer, you will also find a lot of value in joining Kent Liew’s membership training as there is a lot of material there that you can use to improve or expand your repertoire because it maintains a huge database of schematics and diagrams for many different brands of flat screen televisions. The following are the brands that you should be able to find in its database: Samsung, Sony, Visio, Polaroid, Panasonic, Hyundai, Magnavox, LG, JVC and many other brands popular or otherwise, the membership should be able to supply you with all the technical information you need to fix all possible LCD TV problems. The $47 you need to pay for the membership should pay for itself quickly with all the access you are given to valuable technical data.

Whether you are in it as hobbyist DIY electronics repair enthusiast or already in it professionally, being a member of Kent Liew’s LCD TV repair guide and training membership is something that will help in your efforts to improve in your craft.


15″ Magnavox LCD Repair Tips for Model 15MF170V/17


Here’s another video of a LCD TV repair made on a Magnavox 15MF170V/17 which is a small 15-inch flat panel TV. The malfunction is characterized by a blank white screen when you power up the unit. There is audio coming out but the screen is just white and not displaying any pictures.

The repair video showed that this problem is being caused by the absence of electrical input which is needed to power the electronics of the LCD screen such that all you are seeing is the LCD backlight which is white.

The problem was traced back to a faulty MOSFET (metal-oxide-semiconductor field-effect transistor) which is a very small 8-pin chip that acts like a switch that allows electricity to be fed to the LCD electronics.

The fix involved replacing the MOSFET but it does not show the actual process of removing and then replacing it with a new one so this is not beginners stuff. The transistor is very small and the video even said that it is a bit tricky to work on without the appropriate tools.

Important thing is to determine first whether you are having the same problem by checking if the LCD is really not getting any power using a digital multimeter on the connector pins that was pointed out in the video.

If you need the schematics for this product, you may check out another post of mine that discusses where you can possibly find LCD repair manuals and other relevant data sheets for the needed parts.

As always, handling electronics is an activity not to be taken lightly. Be sure to take all the necessary precautions. If you are a beginner, it is recommended that you take an LCD Repair Course first.

Head on over to the video’s Youtube page to get more information about this LCD repair project.


52-Inch Samsung LCD TV Repair Video for Fixing Power-up Failure


Here is another video showing a step-by-step procedure on how to fix a Samsung 52” LCD TV having some power issues, which I am seeing is one of the most common issues people encounter after a while of using their flat screens. This is actually a very similar to the Polaroid LCD TV problem I posted about a while back.

This problem is characterized by the failure of the unit to turn on. Trying it a number of times might eventually do it but if you leave it as is and not do anything to fix the problem, it may get worse and stop turning on altogether.

Like the Polaroid TV problem in my previous post, the problem can be traced to capacitors gone bad and the video will show you how to get to them safely and replace them using very simple tools, one of which is a soldering iron. Operative word here is “safely” so if you are in doubt whether you can do this due to safety concerns, I’d suggest you just bring it to a professional.

This fix can also be performed on other Samsung models in the same line like the LN46A750 46” LCD TV and will cost you just around $15. You will definitely get charged more than that if you have it done at a repair shop.

As usual, if you are interested to learn more about how to repair LCD TVs, I’d recommend checking out this LCD TV repair course by Kent Liew.

Below is the 2-part video of the repair:

More useful information about how to become a better electronics repair can be found in Jestine Yong’s Troubleshooting Electronics Guide


Plasma and LCD TV Repair Manuals: Where To Get Them


Below are a listing of websites that offer repair and service manuals for many electronic appliance and gadgets, televisions included. Some of them offer free downloads. I can’t promise that you will find what you are looking for in these directories but if you have time to spend, go browse these sites to see if you can find the TV repair manuals you may be looking for (perhaps without paying for it).

If you found this page while looking for more information than mere service and repair manuals for plasma and LCD screen televisions, I highly recommend my favorite electronic teacher Kent Liew’s electronic repair sites on repairing LCD screen TVs, plasma TV repair, and DLP projection TV repair. These sites are pay sites but they are dirt cheap when you consider what and how much you get for joining. They offer technical and practical electronics repair education aside from service manual downloads from their vast directory containing hundreds of different models and brands. Click the above links to find out more.

Note: This listing is an ongoing project. Will add on to it as I find more.

Here they are in no particular order:

  • – this is a member’s only downloads club where you pay a fee to get access to their directory for a certain duration of time. Fees are from $5 to $48 which will give you access from 1 month to 12 months. They have a vast array of manuals that span all types of electronics from air conditioning, to cameras, to DVD players, to big screen TVs, to typewriters.
  • – they claim to offer free downloads of repair and service manuals for many many types of electronics from oscilloscopes to satellite receivers, printers, big screen televisions, plasma and LCD TV repair manuals, cellphones, computers, laptops, notebooks and monitors. I’ve tried using this directory but found it to be lacking a lot of models.
  • – this is not a free site but a store for service manuals with shopping cart to boot. According to their website, they offer support for the brands like Sony, Aiwa, Akai, Hitachi, JVC, Kenwood, Magnavox, Panasonic, Philips, Samsung, Toshiba and many many more! They have a well-made e-commerce site but if you’re going to need a lot of service manuals for different brands, then be ready to spend a lot of money.
  • – This is a pretty unique site because it claims not to sell repair manuals but you will only be given access if you donate to a charitable institution of his choosing. A pretty good way to get your manuals if I may say so. You hit two birds with one stone and I highly recommend getting it from them (assuming they have it) and most especially if you only need one or a couple of manuals.
  • – This one’s for the old school types. I included it here just in case there are still some of you who are into repair old school CRT TVs.
  • – This is not a directory per se. This is a forum where you can make requests for a service manual you are looking for and hope somebody has it and is willing to share. If you are looking for freebies this may be a good place to start. Just be willing to spend time waiting.
  • – This is another site that offers access for a fee structure but is not offering lifetime access. Their prices range from $4.99 to $120 to get access from 1 week to 12 months. They do have a huge list of about 750,000 manuals for many electronics brands and models.
  • – This is another online shop that sells service manuals that you can get in CD format. Costs about $25 per CD.
  • LCD Television Repair Training – This is a membership training site that offers education aside from access to their vast database of LCD TV repair manuals. Get lifetime membership and access for just $47.
  • Plasma Television Repair Training – This is likwise a membership training site that offers plasma repair education aside from access to their huge database of plasma TV repair manuals. Get lifetime membership and access for just $47.
  • Projection Television Repair Training – This is likwise a membership resource site that teaches how to repair projection TVs aside from getting access to their huge database of projection TV repair manuals. Get lifetime membership and access for just $45.
  • LCD Monitor Repair Training – Another membership resource site that teaches how to repair flat screen LCD monitors. You will also get access to their huge database of 400++ repair manuals. Get lifetime membership and access for just $47.
  • TradeBit – This site offers pay-per-download service on repair manuals of different electronic appliances and gadgets (Go use the Search function to look for the brand/model). Good site to check out because they have relatively lower prices (as far as pay-per-download is concerned). This site, however, is not exclusive to repair manuals as they also sell a bunch of other types of products.

This list is not yet finished if you have suggestions of sites that I can add here. Just leave a message in the comment box and I will see if I can add them. Thanks!


Two Online Flat Screen TV Repair Courses by Kent Liew


As I mentioned in my previous post about plasma and LCD TV repair training, there are two ways to learning how to repair flat screen TVs or any other electronics: the offline classroom method and the online self-training/DIY methods. Offline methods in the form of classroom courses are, of course, still an effective way to learn this craft but I believe that, with the advent of high-speed internet access, people should also know that there are now alternative modes of TV repair training which can be more advantageous compared to undergoing short courses in actual schools that specialize in electronics repair training.

Online TV repair courses have some distinct advantages over offline school courses:

1. With online courses, your living room is your classroom and you determine your own time in going to school. The convenience afforded by online courses cannot be denied. Go to school and learn how to repair plasma and LCD TV wearing anything!

2. Online TV repair courses are usually put together by real experts and practitioners in the field. These fellas usually have had long years of practical experience. They usually put all those years of experience into the course materials. You will learn faster because you are learning from practitioners and not just teachers following a syllabus.

3. Online repair courses do not impose any time schedules! Go on recess anytime as you virtually have all the time in the world to learn. Actual electronics schools offer time-constrained courses and hence, not everything in the repair text book can be tackled by your teacher or instructor. Online courses usually give more stuff than what can be covered inside the classroom so you are only limited by your motivation to go through all of them.

4. Online courses are most likely cheaper than classroom courses. After all, there is no need to pay for the teachers’ and instructors’ salaries and the school facilities that you may use.

If you are the type who prefers the structured four-walled classroom learning through the help of teachers and instructors, if you like taking notes, doing home works, etc., then you should go enroll at the nearest plasma or lcd TV repair school in your vicinity. On the other hand, if you love doing things and learning at the convenience and comfort of your own home using only a computer connected to the world wide web and some repair tools, then go check out two of the better flat screen TV repair courses available online:

Kent Liew’s LCD TV Repair Training Membership – This is a membership site where you can obtain all the information you need to jump start your electronics repair career. Get access to hundreds of repair and service manuals, schematic diagrams and step-by-step guides. The database of support for different LCD TV models is huge and still growing. You get access to all of it and to future additions with a one-time payment that is probably the lowest out there, considering the amount of information you get and compared to other methods of training for LCD TV repair. This membership site will help anyone of any skill level— beginner or experts alike.

Kent Liew’s Plasma TV Repair Training Membership – Like the LCD TV version, this one is also a membership site where you will get access to all the information you need to going in the plasma TV servicing field. Kent Liew promises to supply you with plasma TV repair and service manuals that you need along with the step-by-step guides to help you train yourself. This membership site will help anyone of any skill level— beginner or experts alike.