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LG 37LC7D 37 in. LCD HDTV - Page 8 Questions & Answers
When I turn on the
You probably have bad capacitors in the power supply. That's not a good idea to keep turning it on-off. You can cause much more damage. Have it repaired ASAP.
My LG 37LC7D tv will work fine for a fw minutes
What about the sound? Do you still have sound when the image is flickering. God help the guy who replaced the T-con though. It sounds like a power supply or inverter issue, provided sound is not affected.
5.1 sound from Sky hd through LG TV
link your optical cable from your HD box to your surround sound.
Then if you go into your HD services menu, press 4 then go to sound make sure its set to Dobly D
That should sort your problem out
Cheers
Little Dish Fitter
Sound and no picture
First, look at the screen in darkened room to see if you can see any slight glow from the screen, if it does, then the problem can be the T-CON (not getting the 12vdc) or the main logic board not feeding the signals to the T-CON board.
if not, next place to check will be the power supply module, make sure it has 24vdc which is required by the backlight inverter to work, the reason for not having 24vdc can be from bad DC filter caps (leaking/bulging top, high ESR) or short circuits in the inverter board which will cause the 24vdc supply to go into shutdown mode, so you may have to disconnect the power cable that feed the inverter board to see if the 24vdc will work without the inverter board hookup, you will need to apply about 3~4 amp of load to the 24vdc to make sure it can handle that. There are fuses on the backlight inverter boards also. So there is some troubleshooting you will have to do to find out the causes of the problem you are having.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:
Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Please post back what you find.
There is a constant buzzing
The sound is generated by the power source - it doesn't run smoothly because either it's defective (but 2 tv with the exact same defect one after the other is quite improbable) or you have a very bad mains power line, filled with interferences. Plug the tv thru a mains filter then check the voltage - if it's at 120 volts as it should and the sound is still there then return this tv also - you are really one of the unluckiest men alive.
When i turn on my
First, look at the screen in darkened room to see if you can see any slight glow from the screen, if it does, then the problem can be the T-CON (not getting the 12vdc) or the main logic board not feeding the signals to the T-CON board.
if not, next place to check will be the power supply module, make sure it has 24vdc which is required by the backlight inverter to work, the reason for not having 24vdc can be from bad DC filter caps (leaking/bulging top, high ESR) or short circuits in the inverter board which will cause the 24vdc supply to go into shutdown mode, so you may have to disconnect the power cable that feed the inverter board to see if the 24vdc will work without the inverter board hookup, you will need to apply about 3~4 amp of load to the 24vdc to make sure it can handle that. There are fuses on the backlight inverter boards also. So there are some troubleshoot you will have to do to find out the causes of the problem you are having.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:
Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.comCapacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make a kit for you.
LG HDTV (48"?) won't turn
The surge of power when the power came back on exploded the caps on the PSB-power supply board... You can call someone out but it will cost as much as buying a new one.
Best regards and Semper Fi
The television sparks when you switch it on.
I do not have any suggestion but you need to keep pushing them on the repair. This is the same company that is used to be called Gold Star from the 70's. it made a lot of cheaply made products like VCR's and TVs. They changed the name to LG (Lucky Goldstar, not much better than the old name) later on, who will want to buy LCD TV, and appliance with th name like Gold Star, Lucky Goldstar?
It looks like it never improve its products quality and services, new name with the same junk.
Lg lcd tv and the liquid crystal display light is on
U have cables,satalites or telicom compannies pay services?Unplug the tv and any of those services box about an hour,replug both back let the box upgrade it software.Turn on the tv.The tv push the button on the remote said Menu.PICTURE go down to reset,the tv now reset it back to factory setting.The air broscasting signal,now should on ur tv.
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