Author Topic: lg 47la620v-za power on issue  (Read 257 times)

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pheerson

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lg 47la620v-za power on issue
« on: April 22, 2019,11:04:40 »
Hi

Recently my LG TV wont turn on properly, When i turn it on it will light up with the lg logo for a second or two then power off with red blinking light. I opened the back for a look and the power supply board had some slight discoloration but nothing major. Can anyone point me in the right direction for a replacement board or maybe something else that might be causing this issue?

thank in advance

calum

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lg 47la620v-za power on issue
« on: April 22, 2019,11:04:40 »

michael first

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Re: lg 47la620v-za power on issue
« Reply #1 on: April 22, 2019,13:13:21 »
hi, maybe a main board issue.

downunder

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Re: lg 47la620v-za power on issue
« Reply #2 on: April 23, 2019,04:57:54 »

Possibly main board but am more inclined to lean (no pun intended) towards a backlight problem. You'll need to dismantle the display panel and observe the LEDs in the short period they do operate at switch-on. See if one or more LEDs are not lighting. Just one faulty LED is detectable by the sensing circuit and turns the set off. Also each LED strip has a connector midway. these can give problems too. See attachment.                             Bruce

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Re: lg 47la620v-za power on issue
« Reply #2 on: April 23, 2019,04:57:54 »

pheerson

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Re: lg 47la620v-za power on issue
« Reply #3 on: April 25, 2019,04:08:49 »
thanks guys ill have a check at the leds  see if any aren't lighting up. Hopefully that's the issue.

clark97

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Re: lg 47la620v-za power on issue
« Reply #4 on: May 03, 2019,15:39:03 »
Generally with these if its the main board you won't even get a flash from the lights, yours is almost certainly on of the led strips.

 

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