LCD TV repair made easy #3

http://tvrepairinfo.com
When I first started out doing TV repair I never realized buying original parts was so important in many cases. I'm not against using generic parts as long as they work correctly but after a friend of mine was forced to redo three convergence jobs on his customers big screen TVs I thought the potential for problems was worth mentioning.

If your a professional looking for more understanding on how to repair LCD TVs or an electronics hobbyist here are some great resources.
Troubleshooting & Repairing LCD TVs by John Preher at
http://davestv.jptv97501lcd.click2sell.eu
For someone new to electronics the first few pages of this book may be a bit challenging but the majority of this book is easy reading with lots of pictures,diagrams and useful troubleshooting techniques. Johns book gives you a good idea about the main test points you should look for and their approximate voltages.
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How to troubleshoot and repair Switch Mode Power supplies by Jestine Yong at http://davestv.jestinemichellepow.click2sell.eu This book is a bit spendy but I'm still glad I purchased it. In my opinion it's a must read. Jestine is good at getting right to the main points you need to understand about troubleshooting this kind of power supply and its associated feedback circuits.
Since a majority of the problems I have seen on LCD TVs are related to bad power supplies I figured it will pay for itself many times over. Most of the book was easy reading with plenty of pictures and diagrams.
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Testing electronic components and finding unknown resistor values by Jestine Yong. http://5d8388ioop4nfm862d1b0u7sbj.hop.clickbank.net/
I have not yet read Jestines book on Testing electronic components but I was told it's a good one for a person just starting out in electronic troubleshooting.
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How to repair LCD Computer Monitors by Jestine Yong at
http://davestv.jestinewilliamlcd.click2sell.eu
Even though this book was about computer monitor repair I found most of the troubleshooting techniques he demonstrates also applied to LCD TV repair so I was glad to have read it. Much like the book on Switch Mode Power Supplies it was easy to read and similar to Johns Prehers book on LCD repair but in Jestines own style. It had lots of pictures and good troubleshooting techniques.
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Mikes TV case histories The latest paperback edition has 1300 case histories on LCD, CRT, Plasma and Projection TVs. at http://www.mikestvtips.com/ 1-410-272-4984
When I first started in the TV repair business and my troubleshooting skills were not that great often times Mike's case histories told me exactly which parts I needed to replace and it often saved me from having to purchase a great many schematics. I have been using his case histories since 1995 and I would not be with out them. If you call him please be considerate of his time zone and call between 11:00 AM TO 8:PM Eastern time only.
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John Prehers LCD TV case histories at
http://davestv.jptv97501lcd1.click2sell.eu
This ebook has 56 case histories on nothing but LCD TVs
and which parts he replaced to get them going. I found this ebook was helpful in better understanding the connection between certain symptoms and their causes. Right now it's only 10 dollars.
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Getting Started In Electronics by Forest Mims available at some Radio Shacks or through this link.
http://www.Forrestmims.com
If you know nothing at all about electronics and want to start with the basics this is a fantastic book to start with. This book is packed with pictures.
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brought to you by Dave's TV in Grants Pass Oregon
541 479-3915

Category:

Education

Tags:

• LCD TV repair
• TV repair
• Repairing your own TV
• Television troubleshooting
• Television repair
• Television repair tutorial
• DIY TV repair
• How to repair LCD TVs
• How to repair Televisions
• LCD TV
• Understanding TV repair
• Understanding TV circuits
• TV repair tutorial

[harvjp]

Hi Dave, I wanted to see an approximate percentage of problems you find with LCD TVs. What percentage of problems fall into Power Supply, Inverter Board, and Backlights vs a percentage for all other problems. Just getting started in TV repair.

Jeff

[GrantsPassTVRepairs]

@harvjp I don't know exactly what percentage of the problems I see are related to power supply failure, but I will guess bad power supply capacitors represent at least 25 percent of

the LCD TV repairs I do, and perhaps the same percentage in inverter boards but I'm not exactly sure. Good question though. One of these days I should go through Mikes TV case histories and figure out what percentages are related to what based on his tips.

Dave

[rajkumartree]

I have a samsung LCD HD TV. I see vertical lines on my monitor, not at all able to see any picture on the screen. Technician had a look at it and says "display needs to be replaced" and it costs [indian currency]Rs. 13000/- . How do i know that the display really needs a replacement.

[GrantsPassTVRepairs]

@rajkumartree

Sometimes you can use freeze spray on the edges of the display and it will temporarily make the display problem go away but not always. Sometimes you can also try pressing the edges of the display and this may temporarily repair helping to verify if the display is bad.

[XTYNoLuck]

i can often hear flyback tranformerts if the have the ~16Khz signal...of course it could just be an sub-harmanic....off of the ferite core....

[GrantsPassTVRepairs]

@XTYNoLuck I remember in my younger years I was also able to hear the flyback oscillating but after we get older we loose the ability to hear high frequencies.

[321reh]

ALL Your Videos are Very Educational Thanks!!! I couldn't agree with you more about purchasing components,,We have to be careful sometimes!!!

[Watcher3223]

@Liv11714

Sorry to butt in, but have you checked the Y-SUS board? Sometimes, when buffers fail, they can take out the Y-SUS (and vice versa).

Also, if you're going to service or replace the Y-SUS board, it may be a good idea to service or replace the Z-SUS at the same time.

[Liv11714]

Hi I've been trying to repair my Philips 50inch plasma tv, Ive gotten brand new buffer boards for it and that has completely heped the top half of my tv but the bottom half remains black with colored dots. Can you offer me some advice or point me in which direction i should go. I would really appreciate it. Your videos are one of the best out there. Thank you