Question about Televison & Video

1 Answer

I have a bit a problem I would love to hear your advice on. I have a 37 LG LCD TV (37LC7D) and have owned it since about last Sept. This has been a great TV and I have had zero problems with it. I came home today, turned it on, and noticed the picture brightness flickering a bit. Then the screen went black but I could still here sound (though the TV speakers). Then the set just powered itself off. Tried to re-start it, and similar thing. Stays on for a bit (less than a minute) then goes black, with sound. Then just powers off. I let the TV sit for a while, and then tried it again. The picture lasted for a while (maybe 2 mins) then brightness abruptly faded and then entire picture started to flash for about 30 secs, then completely went black but still with sound. After about 10-30 secs the set just powers completely off.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 2,712 Answers

1. Try this - hold the menu button down for 10 seconds. TV should power up; you will have to turn off front panel buttons on menu.

2. You can also try plugging in the TV through the USB on its panel to a computer or USB charger, and it may work. However, this is only a temporary solution.

3. Powering down the set or putting it in standby may have allowed the power supply to cool. Weak capacitors often go out of spec when they cool, thus preventing a section of the power supply from firing up properly again. There is a simple trick...just warm the back of the TV with a hair dryer for 5-7 mins after you have unplugged the TV. Look for the little areas of holes in the back panel of TV. Use these as your guide at where to use the hairdryer, but don't hold the dryer too close (say 5-6inches away). (Make sure the dryer is on High heat). If the TV doesn't turn on after you have heated it up (like it tries to come on but then turns off) you need to unplug the TV again, this resets it. And repeat those steps till it works. Resetting the TV after it fails to turn on is the key. Also, just leave the TV on. Don't turn in off. Since it is LCD, it doesn't take much power...only a few bucks extra a month for your utility bill.

4. A circuit board may crack about some of the larger components mounted on it. You can inspect the PCB's for fractures, and then repair them. It may also be poor soldering that has failed. I would be checking for these things first.


5. If you want to go in for a long term solution, you can easily replace the whole power board or just change the faulty capacitors. You will have to open the back panel and take a look. You can make out which are faulty, because their caps will be swollen on top. Here's a sample pic:
I have a bit a - 5409f03.jpg
Check the specifications of the faulty capacitors, and get the replacements from your local electronics shop. If you are comfortable with this, you can use a pair of needle nose pliers to G-E-N-T-L-Y pull out the defunct capacitors. Once that is done, solder in the new capacitors carefully. If are unsure how to do this, try to get a friend who knows how to do this kinda stuff do it for you, or get a qualified technician. Warning: If you do not have a background in electronics repair, or are inexperienced, get a qualified technician to do it for you.


REMEMBER there are very dangerous voltages inside a TV that can KILL. Be sure to work SAFE when dealing with electricity. DISCONNECT THE POWER BEFORE YOU DO ANYTHING.

Hope that helps...Should you have any further questions, please feel free to post them here.

P.S. - If you find that the solution/answer I provided led you to, or resulted in a fix, please close the ticket with a FixYa! rating. I would be very grateful for your show of appreciation.
If it hasn’t, please do not assign a rating just yet. Please post back as to what steps you took, results, etc, and I will try to assist you further as best I can. I am here at your service.

Thank you for using FIXYA!

Cheers!
IrishDruid

Posted on May 01, 2008

  • Swilin Sampson
    Swilin Sampson May 03, 2008

    Hi,




    Just wanted to inquire if your issue is resolved, or if there is anything
    further I can do to assist you…





    If you find that the solution/answer I provided led you
    to, or resulted in a fix, please take a moment to close the ticket with a FixYa!
    rating under my solution.
    I would be very grateful for your show of appreciation.





    Should you have any further questions, please feel free to
    post them here.





    Thank you for using FIXYA!





    Cheers!


    IrishDruid

  • Swilin Sampson
    Swilin Sampson May 31, 2008

    Hi,




    Just wanted to inquire if your issue is resolved, or if there is anything
    further I can do to assist you…





    P.S. -You can rate this solution with one of
    four votes, if you feel your issue is resolved.






    • "FixYa!"
      - The solution provides great advice on how to solve the problem.
      (Positive Rating)

    • "Helpful"
      - The solution provides useful leads that helps solve the problem.
      (Positive Rating)

    • "Thanks
      for Trying
      " - The solution does not solve the problem but the
      effort is appreciated. (Negative Rating)

    • "Inappropriate"
      - The solution has absolutely nothing to do with the problem.
      (Negative
      Rating)


    If your issue is not still not resolved, do not
    assign a rating just yet. Please post back as to what steps you took, results,
    etc, and I will try to assist you further as best I can.






    Thank you for using FIXYA!





    IrishDruid




×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

No sound on lg 37lc7d 37 in lcd hdtv


Apparently something else has failed on the circuit board(s).

Nov 10, 2013 | LG 37LC7D 37 in. LCD HDTV

1 Answer

LG 37LC7D 37 in. HDTV LCD TV My screen seem to over heat, Goes blank, but TV is still on. then comes back on for a few seconds, then again blacks out


It sounds like a problem in the high voltage circuit. Had a similar TV set which had the same problem. When there's power leaking from the high voltage circuit, these TV's will tend to cycle on and off. Voltage leaks are mostly caused by accumulated dust for the most part.

Jan 31, 2011 | LG 37LC7D 37 in. LCD HDTV

1 Answer

Looking for a tv stand for LG 37LC7D 37 in.


I would suggest you check ebay, or shopjimmy.com.. there was one at shopjimmy.com but I am not sure if it is still available.
good luck!

Aug 25, 2010 | LG 37LC7D 37 in. LCD HDTV

1 Answer

Truble switching on tv


its repair immediatly its a power supply problem,

Apr 14, 2010 | LG 37LC7D 37 in. LCD HDTV

2 Answers

Lg 37lc7d with no picture or sound but green light comes on . popping noise preceeded problem. no obvious blown capacitors


Ur tuner board is dead.Replaced this board to get picture back.Tries Shopjimmy.com,Ebay.com for the board part.

Feb 10, 2010 | LG 37LC7D 37 in. LCD HDTV

1 Answer

37'' LG lcd tv, no power


I just want to clear things here.
The stand by light will remain on whenever the tv set is turned on by a button on the side of the tv.

Then use your remote to turn on the tv, but wait as it can take 10secs before you get a picture.

Nov 04, 2009 | LG 37LC7D 37 in. LCD HDTV

1 Answer

37" lg television


sounds like u have a dead solder joint or loose connector. poor workmanship LG (formerly known as GOLDSTAR is known for)

Dec 05, 2008 | LG 37LC7D 37 in. LCD HDTV

1 Answer

Broken LCD


well dont trash it.. it will cost you more to fix it than it will take to buy a new one what you can do is search for another broke one with a good LCD screen or most tv repair shops will buy it from you for parts on the last LCD tv i sold to a repair shop for a 26" thay gave me $100.00 dont know how thay are in your area but it is worth looking into.

Nov 16, 2008 | LG 37LC7D 37 in. LCD HDTV

1 Answer

Power went out on LG lcd tv


Those units usually have a main board that all the functions are centralized on. If the LED comes on then your power supply is operating (at least no shorts). But the main board will most likely be the problem.


C-Dog

Feb 10, 2008 | LG 37LC7D 37 in. LCD HDTV

Not finding what you are looking for?
Televison & Video Logo

Related Topics:

200 people viewed this question

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

72670 Answers

Electro Med Services...
Electro Med Services...

Level 3 Expert

6694 Answers

yadayada
yadayada

Level 3 Expert

70387 Answers

Are you a Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...