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Equipment Repairs => PLASMA TV forum => Topic started by: pheerson on April 22, 2019,11:04:40

Title: lg 47la620v-za power on issue
Post by: pheerson 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

Title: Re: lg 47la620v-za power on issue
Post by: michael first on April 22, 2019,13:13:21

hi, maybe a main board issue.

Title: Re: lg 47la620v-za power on issue
Post by: downunder 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

Title: Re: lg 47la620v-za power on issue
Post by: pheerson 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.

Title: Re: lg 47la620v-za power on issue
Post by: clark97 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.