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No picture. Screen flashes when turned on and then goes black. When changing inputs, it shuts off. No capacitors look bloated. Which board needs to be replaced? Power or tcon or main board?
Thanks!
Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electro-medical.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board
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Feb 9, 2017 - My 32' LG LED TV has suddenly lost picture! The sound is alright but the screen is pitch black. ... Then completely black but with audio. ... I'm really hoping if I do the right research Ican fix this tv for my husband. .... Take the screen off hit power and watch LEDs if any don't flash its LEDs if they all flash its ..
Nice TV ,but, is an LCD . most likely cause may be after long service life the 'Cold Cathode' tubes have begun to grow a carbon track down from the high voltage input . This causes the power supply for that voltage to determine too much load and shuts down . I am surprised you do not see a flashing LED pattern but this does not mean that the condition was communicated to the ECU .
That is a lot of tubes to change at about 40 usd for 10 pieces . It is also a Pain in your seat cushions to disassemble to confirm (ie: delicate connections to undo , mechanical puzzles to solve) I have seen Youtube videos of people converting to LED backlights with very nice results . It is possible but not recommended to change just the bad ones , you will soon have to do the rest anyway .
There may be a shop that does it often and could save $ compared to replacing with LED tv set that size or maybe a shop that converts(not me!)
Luck ... Hugh
? 3:16
https://www.youtube.com/watch?v=kFdVi2ejfzA
May 8, 2014 - Uploaded by ShopJimmy.com
TV Repair Help for a TV With a Black No Image on the Screen ...I Have A Sanyo TV I Can Hear But Black Screen Im 14 And Dont Know What To Do ! .... power button the power light goes from red to green, the screen flashes on then goes black ....Troubleshooting LCD Backlight Failure Samsung LNT-4066 ...
7 days ago - My 32' LG LED TV has suddenly lost picture! The sound is all right but theScreen is pitch black. After switching it on the picture flashes for a second and thenthe ... LG LED TV has no picture (black screen) but still sound - can it be fixed? Tags: ... a touch on the screen reveals nothing so it's not the back light.
Oct 9, 2012 - Brightness goes down, display draws less juice, and you can at least use .... it's the LCD's Inverter ... you have to replace it for it to go back to ... If the screen is turning off every two seconds or so and then it comes ... i turn my tv on it comes right on, but then after a few minutes turns off, .... Digital Trends for LG.
No display in monitor
Jan 11, 2013 Ps3 and hdmi cable
Oct 8, 2012 More results from ccm.net
hi; when your LCD TV wont start , even if you press the power button ,
it has a power supply failure, maybe some capacitor has bloated or changed value,
try to watch this http://www.youtube.com
if you know how to solder, or even disassemble the back of LCD TV.
if not try to call a repair technician.
thanks ,, hope this help........
hi..Seems like your Power Supply went dead or either a faulty button..
Since those are touch pads those sometimes wear out. Another issue
could be due to overheating..
I ended up fixing my problem, but I'm not sure what the solution is. I had some faulty electrical equipment that I was using to power the monitor (220V to 110V converter and a bad power strip) and I got rid of them. I was using the converter because I moved to Israel and I thought I needed to feed the monitor only 110V, but I now realize that the power cord for the monitor has a built-in converter that accepts 220V input. Now the monitor is plugged directly into the wall and is working fine. Try using a different power source (maybe the wiring or plug you're using is faulty). Good Luck!
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