This is a much asked about question:
LG Smart LED TVs that turn on for a second, show the LG logo, then a black screen ensues.
My TV is a LG 43uj6200 TV.
I have tried the typical troubleshooting steps involving holding the power down for 15 seconds while unplugged, then waiting up to 15 min, then holding down the power again while it turns on. No fix there.
I am getting the 3 red blinks, but the system will stay on (at least the motherboard does). 3 red blinks indicates that it is a power supply issue, from what I read.
Also, I visually looked at the mainboard for faulty caps (leaky or busted cans). Nothing visible. I have read that there is a power diode that could be bad. I did a diode check on all diodes near the "blue rectangular component" (possibly a relay?) None of the diodes showed an open circuit or an infinite voltage.
I do not have an ESR/LCR meter but am going to get one in a few days.
I measured the voltage on the output of the power board and it is supposed to be 13.2 volts. I got 13.08V. Measuring the second to last pin (P-ON), I got 3.2V. I am not sure if that is up to par. I think 3.3V is the requirement for the mainboard.
The last pin at the bottom of the connector is called INV-OK or something like that. I measured 2.85V there. Are these voltages within spec?
I have also read that the LEDs could be open circuited or failing which would draw more current than the power board can handle. This could also cause the shutdown.
Does anyone have any other repair tips for this? I really don't want to have to buy a new power or mainboard.
Just purchased this and the set up is driving me nuts. I have a Sony reciever that I use for my audio out as well as HDMI device switching. The output of the reciever is going to HDMI 1. The TV audio out is set to HDMI (ARC) device. When watching devices directly connected to the reciever (cable box, roku, DVD, Tivo), audio out is fine. If I try switching to the smart menu or the antenna, there is no audio going from the TV back to the reciever. I also have a Roku I can use for streaming, but not for OTA. Should I just route everything directly into the TV, and use the optical out to get sound to the reciever? Also since setting up the TV and remote there is strange interaction btween the TV and the reciever. I noticed that my cable box, dvd, and roku all show up devices attached to HDMI 1, and clicking on that device will change the input on the reciever, but I have no control over the reciever from the LG remote, volume and muting buttons have no effect. Also there soesn't seem to be anyway to control my Fios cable box, a Motorola HD QIp 7100-1. I have the IR blaster sitting right next to it
Hi, my lg 60uj6580-sd updates automatically and I haven't had any problem until firmware update (I think) 06.00.10 made my tv really slow: apps freeze, as well as videos, and tv control sometimes (if not most of the time) doesn't respond because it freezes too. How can I fix it?
By Rahul Sharma
I am getting this above error PI 1001_404_1 NAS continuously while watching hotstar disney. Pls help me to fix this.
We ran an ARC sound bar with surround sound on a C9 OLED TV - this works fine . I would like to add a bluetooth headphone for my partner to use as her hearing is getting worse but key is to operate both the sound bar and the bluetooth headphones at same time - Has anyone done this . I can see away to do it with internal speaker option but quaility of speakers is not too good on the C9.