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Ask Shahid Your Own Question
Shahid
Shahid, Technician
Category: Electronics
Satisfied Customers: 11586
Experience:  I have been repairing electronic gear since 1993 as a qualified Sony tech
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switched on tv picture came on for 10 seconds with sound then

Customer Question

switched on tv picture came on for 10 seconds with sound then went off
Submitted: 3 years ago.
Category: Electronics
Expert:  Shahid replied 3 years ago.
Hello, my name is Shahid, I'll be happy to assist you.
Please allow me to ask you a few questions to diagnose the problem.

- Can you please get the model number written n back of TV?

Thanks.
Expert:  Shahid replied 3 years ago.
Please reply here of above info-request and do not post duplicate question.

Thanks.
Customer: replied 3 years ago.

man.2010 42le 4500

Customer: replied 3 years ago.

manufactured 2010 model 42le 4500

Expert:  Shahid replied 3 years ago.

Is it LG 42LE4500 TV?
If yes, when did the problem occur?
Does power light on TV stay solid or goes Off when Tv shuts off?



Customer: replied 3 years ago.

light stays on which means there is still power.i switched tv on first thing this morning everything was fine ,went to make coffee came back tv was off.

Expert:  Shahid replied 3 years ago.

OK, have you tried to unplug TV power cord from wall socket for 10 minutes to reset, replug back in and check?

Customer: replied 3 years ago.

yes

Expert:  Shahid replied 3 years ago.

OK, does screen show any light or TV own menu come up when press menu button on TV or its remote?
Do you get program sound as there is no picture in TV?

Customer: replied 3 years ago.

yes ,when i switch on the tv screen comes on for one second saying lg life
is good then nothing just blank screen ,,black.

Expert:  Shahid replied 3 years ago.
Thanks Bruno for the info.

There are two possible things that can cause such symptoms in this TV, either bad/ corrupted firmware (TV internal software) or main board failure.
Please check following LG UK site and download firmware/ software file along with instructions guide file and try to update firmware in TV.

http://www.lg.com/uk/support-product/lg-42LE4500

If firmware update doesn't help then need to replace main board of TV and this work should be done by handy person to avoid any damage. Local TV repair shop will do this job for you and it may cost $200 to $250
I trust my input will help you out. Please feel free to respond if you have any additional questions.
A positive rating to answer would be greatly appreciated!
Regards,

Shahid.