No picture but there is sound...

SOURCE: I have an LG 42px5d

You might wish to unplug the TV for an hour or more. If this power reset does not allow the TV to turn on component failure is indicated. These sets are assembled using the wave soldering process they are known for having cold solder connections.

The safety circuitry shuts the TV set down or will keep it from turning on when it detects a problem. This model of TV has over 2,000 parts, which includes millions of transistors inside the integrated circuits. The capacitors will change value, leak and become defective. Resistors will change value and burn. Diodes and IC can go bad.

This may have a domino effect and cause other parts to fail. Replacing one defective part may make the TV operate for a short time but the part will fail again if the parts that caused the failure to begin with are not replaced.

The only way to know for sure which parts that are no longer within factory specs and for a proper repair all the electronics must be diagnosed by someone with the correct electronic test equipment specifically designed for TV service and the skills to use the test equipment. I wish I could tell you there was a quick fix or button to push that would fix the TV but that is not the case or the solution needed to get the TV operating correctly.

Plasma is very common for having a power failure issue. The problem resides in the Y-Sustain board in most cases. The HDTV Plasma Television also have the same issue as they all use the same PDP Panel (plasma panel).

Loud popping and loss of power is common on plasma TVs and is usually either the Y sustain or Z sustain boards or buffers; in these instances the damaged part will be quite evident.

If this is an LCD you might have degraded insulation on one of the pink/blue backlight power leads causing high voltage to 'arc' to the chassis.

The loud bang and smell is actually to your advantage as in these circumstances the damaged part is usually evident. It'll just be a matter of popping the back off and sleuthing around

That's the sound of your power supply going bad. You will have to have it repaired by a professional television technician.


Before making any purchases, please check the part and make sure it is what your TV needs. I am simply making recommendations and trying to point you to the right direction.

Thanks for using fixya..

SOURCE: No picture on mu LG television.

Try the old flashlight test, turn off the lights in the room. Turn on the set and flash a bright flashlight on the screen. Do you see the image or is the screen totally black?? If you see the image, then most likely you have a backlight problem. Verify that you have 24V on the power supply for the inverter

SOURCE: 47lg50-ug blue light on no picture no sound

i got the same problem. could it be something simple like a capacitor?

SOURCE: LG Washer wont start, no power

I HAVE A BEKO 42WLH530HID TV, AND WHEN I TURN IT ON THE STANDBY LIGHT COMES ON BUT NO PICTURE OR SOUND, I KNOW ITS 1, OFF 3 CIRCUT BOARDS BUT DON,T KNOW WHICH ONE, CAN ANYONE HELP ?

The Knight

• 76851 Answers
• Posted on Feb 05, 2015

SOURCE: lg led tv backlight

Fault with its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.