Re: 55la6205 backlight issues
OK so i reseated the strips and connectors and now the TV wont turn on at all.
All I get is a quick flash of some of the leds and that's it, so something happened when I reseated the connectors and moved the strips???
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Last edited by speedymmx; 12-28-2015, 09:09 PM.
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Re: 55la6205 backlight issues
hi, Guys, no I haven't checked the connectors on the strips, I will do it now and see if it anything changes.
Thanks...
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Re: 55la6205 backlight issues
Just took the reading again the + with 177 is steady at that voltage when the backlight is on, I waited until it shutdown and it went up to 215V and started coming down slowly.
Unplugged waited 2 minutes did the same with the other + 135 steady and when the BL shutsdown there are no power surges or anything just starts to come down to 84V slowly......
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Re: 55la6205 backlight issues
just took another reading and I see some changes on the -
LED + 133.5
LED - 5V
LED + 177 still higher than the other positive
LED - 5V
when the backlight goes out the second + that is at 177 goes up to 200 now until it slowly goes down to 84V.
anything else I can test????
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Re: 55la6205 backlight issues
Ok so I decided to turn on the TV and all the LEDs light up fine? but still shuts down after a bit, how do I find out if there is an open circuit on which LED strip ??
I thought if there was a bad led it will simply just not light up???
Thanks...
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Re: 55la6205 backlight issues
Yes I have one, I haven't turn the TV on or done anything yet.....
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Re: 55la6205 backlight issues
OK so I took the TV apart and i'm down to the LED stripes panel, how can I test or find out which ones are bad?
Thanks
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Re: 55la6205 backlight issues
No changes after trying this still has the same issues....
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Re: 55la6205 backlight issues
How can I test the LEDs??? should I just replace all the ones connected to that circuit by following the cable connector?
Thanks...
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Re: 55la6205 backlight issues
Ok so I tried as suggested with the backlight in setting of 5/100 and it did last longer as soon as I selected an app like youtube, it starts and then later the backlight goes out, I uploaded a video to youtube so everybody can see what exactly is happening.
Here is the link:
at 53 seconds in the video is when the backlight goes out.
[url]https://www.youtube.com/watch?v=N0IPrfsrAC0&feature=youtu.be[/url]
ThanksRe: 55la6205 backlight issues<br /> ...> <br /> Ok so...Last edited by speedymmx; 12-11-2015, 01:09 PM.
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Re: 55la6205 backlight issues
Hi, No I haven't tried that yet, I will do it later today and post the results.
Thank you for all your help...
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Re: 55la6205 backlight issues
LA62M55T120V12 seems to be the LCD panel number
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Re: 55la6205 backlight issues
OK so if I order the replacement part which I believe is this one:
[URL="http://www.ebay.ca/itm/like/262117644991?limghlpsr=true&hlpht=true&ul_noapp=true&hlpv=2&chn=ps&lpid=116&ops=true&viphx=1"]http://www.ebay.ca/itm/like/262117644991?limghlpsr=true&hlpht=true&ul_noapp=true&hlpv=2&chn=ps&lpid=116&ops=true&viphx=1[/URL]
is there a tutorial or a video I can follow as to how to get to the LED strips?
also do I need to buy more than one LED strip????
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Re: 55la6205 backlight issues
OK so I disconnected the LED cable and measured only the two L+ with the TV OFF as soon as the TV is turned on the DCV are:
L+ = 179 and then it starts dropping down to 84
L+ = 184 and then it starts dropping down to 84.4
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Re: 55la6205 backlight issues
This is what I got:
When the backlight is on and working, showing the LG logo floating across the screen the DCV are as follows from left to right connectors
[B]
LED + 133.5
LED - 32.9
LED + 177.5
LED - 43.1[/B]
When the backlight randomly turns off the DCV are:
[B]LED + 84.4
LED - 5.36
LED + 84.4
LED - 166.0[/B] this readout goes up and down from 177 down to 166...
ThanksRe: 55la6205 backlight issues
This is what I got:
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55la6205 backlight issues
Hi, Guys:
I have this LG-|Smart TV and it just started having this issue:
when I turn it on, I get the LG logo and LED power light, it works for about 10 seconds and the back light/video goes black/LED power light goes out, sound keeps playing, I can see the image by doing the flashlight test, If I turn it off and on the same thing happens.
two days ago I unplugged the TV and left it alone all day, then I turned it on again and it worked perfectly for about 5 minutes with no issues........then it happened again so is either when it gets hot or something....Last edited by speedymmx; 12-10-2015, 01:02 PM.
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