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LEGEND LEC3220 color problem

Hi

I have the LEGEND LEC3220. The LCD needs main board, as color is no longer working properly.

I need the following part: 667-L32U25-56L CPU Board Assembly. Do you provide? If not, where can I get one.

Thank you.

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6 Suggested Answers

  • 2 Answers

SOURCE: Tatung V30DMTT 29.6 in. LCD... Problem: Faulty Power Board

Hi -I had the same problem with my tatung LDC tv. PIECE OF !@$#$#@#!!. Not knowing a whole lot about electronics, I decided well, I couldn't break it anymore, and I thought it was probably the power supply as the tv did NOTHING!!! it wouldn't light up make noise or anything. it was totally dead. I called around MANY, MANY local tv repair shops and NO ONE would work on this as they didn't have the repair parts for it. Thats what I get for going cheap. Anyway, well, I popped the back off, carefully making sure I knew where each screw went if I ever had to put it back together. Well, I located the power supply - it's pretty obvious, I removed it with a few screws and then found a company in california that repaired power supply's - I sent it off not knowing if it would solve the problem, but they quoted me $75 dollars and I figured if it didn't work $75 wasn't too much of a loss - and they said I could return it and get some of my $75 bucks back. So, I shipped it off to them. A couple weeks later, I got it back and installed it and to my amazement it worked!!! It has been working GREAT ever since. There is a few places online that sell the power supplies and offer a refund minus restocking fee if that doesn't work. Check out http://www.shopjimmy.com Good luck and hope this helps scott

Posted on Jan 31, 2008

  • 1 Answer

SOURCE: system board replacement

Leadtech described how to remove the back panel. However, after removing all the screws the panel does not easily come off. Do you need to pry off the back panel?

Posted on Nov 25, 2007

SOURCE: Right third image filled vertical lines when hot

Ive Had the same issue with my TV - and its really dissapointing to see it so well documented - obviously this is a design fault- its the last Philips TV im buying :(

Posted on Jan 13, 2008

  • 2267 Answers

SOURCE: Need help finding an Akai LCT2701TD Power Supply Board Assembly

It seems like there are not many of these service parts available anymore. The only way to get your LCD working again will be to repair it.
The repair involves changing the defective parts to restore the LCD functionality.
If you need more info, you can write to jah2mil@hotmail.com

Posted on Jun 16, 2008

circuitworld
  • 335 Answers

SOURCE: LCD tv main/digital board

Send it to us and we will refurbish the board.....

e-mail me....circuitworld@comcast.net


Posted on Feb 11, 2009

  • 718 Answers

SOURCE: how hard it is to replace by yourself main board Samsung LN-T4065

You need to do some more diagnosing of the problem. If you get sound and change channels take a bright flashlight and place it again the screen. Look for an image around the edge of the flashlight.
If you see an image that means the LCD controller board (TCON) is probably good.

The problem is probably one of three causes;
1) Inverter board is bad
2) CCFT (cold cathode fluorescent light) are bad.
3) Power to the inverter board is bad. You can also check the connectors.

Posted on Mar 30, 2009

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Try these if you have electronics background :
Note: Touch your fingers repeatedly to a ground connection point or unpainted metal in the product before proceeding.
  1. Unplug the unit.
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  3. Disconnect the LVDS cable from the power supply or from the main board. LVDS cable runs from the right bottom of the power supply to the upper left of the main board. Power supply is located at the upper center of the unit and the main board is at the right bottom of the unit.
  4. Plug the unit back and turn it on or the unit turns on automatically.
  5. Look for the Control Board. It is located right at the center of the unit below the power supply. It has a LED on it.
  6. On the Control Board at the right bottom of the MCM chip, the big chip right at the center of the board, you can see two test points. Short across the two test points.
  7. If there appears a picture of cycling colors and patterns, the Y-SUS, Y-Drive, Z-SUS, Power Supply, X-Boards, TCPs and Panel are all OK. The Main Board or the LVDS cable is defective.
  8. Check LVDS cable continuity.
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  11. Check fuses or continuity of voltage supply lines going to the X Board/s, Y SUS and Y drive Boards and Z SUS Board.
  12. Replace blown fuses, connect broken lines, and resolder loose solders.
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