How To Repair Lg Tv

I similar fixing things myself whenever possible. Fixing my LG TV was intimidating at first, but it was really fairly piece of cake.

LG 42LN5300 LED TV — LG 42LN5300 LED Television set

Why Won't My Flat Screen TV Plow On?

LED TVs have a known trouble with capacitors going bad. If your LG LED Television set won't turn on or makes repeated clicking sounds, in that location is a very practiced chance that you tin can relieve hundreds of dollars doing this unproblematic repair yourself.

I know, I know. You're thinking, "Tinker inside my LED HDTV. Are you lot crazy?" No, I'k non crazy. This is a repair almost anyone tin can do, it's actually quite simple, and with only a few basic tools and nearly 20 bucks, you can have your TV working in less than an 60 minutes.

The step-past-pace repair below was washed on a LG 42LN5300 LED HDTV, but this easily repairable solution tin can be performed on any Apartment Screen Television receiver.

What if I don't have an LG TV?

Don't worry. The steps below will assist yous repair whatever brand of TV.

You will need the five items beneath for this repair:

Phillips Screwdriver
Pliers
Wire Cutters
Soldering Iron
Capacitors (You'll become these after identifying bad capacitors in Step v)

Need a soldering iron? No trouble. They are cheap and easy to utilise. I highly recommend the J&50 sixty Watts Soldering Fe. Information technology's nearly 20 bucks, or if y'all're looking for the everyman price possible, this 60W soldering atomic number 26 with stand is well-nigh $8 (shipped prime) and will work just fine.

These tools aren't required, only they can make the process easier.

Magnetic, ratcheting, flexible screwdriver (to help remove all the casing screws)
Cordless Screwdriver (to assistance remove all the casing screws)
Desoldering wick (absorbs melted solder)
Solder sucker (remove melted solder)
Flux Pen (flux on solder makes it flow and less "sticky")
Multi-Meter (test for bad Caps, helpful if there are no visual clues)

Step 1: Remove the Stand — Stride ane: Remove the Stand

Step i: Remove the Stand

After unplugging everything on the Boob tube, yous will demand to remove the stand. If your Idiot box was wall mounted you will demand to remove the Television set from the wall, and remove the mounting subclass from the back of the Telly.

Ruby arrows: Remove these iv screws to remove stand from Television receiver.

Scroll to Continue

Blueish arrows: Remove these 4 screws to remove a wall mount (not shown) from your Tv set.

The Television receiver sits on meridian and inside the stand, and then information technology wont only flop over when you remove the stand screws, only it's ever safer to accept a friend hold the Telly upright as you remove the screws from the stand. Then each of you take hold of a side and carefully lay it flat on a carpeted surface.

Footstep ii: Remove the Dorsum Casing

There are xvi screws to remove that will permit the dorsum casing of the Goggle box to come off. Remove all of the screws shown at the "yellowish arrows" beneath.

Removing all of these screws is made much simpler using a cordless or ratcheting screwdriver.

Warning:

When handling your TV always keep it straight up (like your watching it) or laid flat. Any strength practical at odd angles tin damage the fragile glass front.

Step 3: Remove Power Lath

With the back casing removed locate the power board (pictured beneath).

Take a pic of the lath (volition help during re-associates)
Remove all ability harnesses using a simple tug on the connector clip (not the wiring)
Remove all screws holding lath down

LG 42LN5300 LED TV Power Board — LG 42LN5300 LED Boob tube Power Board

If you're not working on the LG 42LN5300, your power board will wait different, but the process is the same.

Step 4: Learning How to Identify Bad Capacitors

Usually, merely not ever, capacitors volition show visible signs of failure. There are two main types of visible failure.

Bulging Vents:

When information technology fails, the chemical reaction within the capacitor can produce hydrogen gas, and then capacitors have vents cut into the tops of their aluminum cans. These are intended to suspension and release the gas that has built up inside the capacitor. And then, a capacitor which has failed can testify bulging at the top. Below is an example.

Leaking:

Another sign of a failed capacitor is leaking fluid (electrolyte). This tin can be an orange or brownish belch from either the peak or bottom of the capacitor. Usually a leaking capacitor will also be bulging. But not all bulging capacitors are leaking.

We want to emphasize that capacitors do non ever show visible signs of failure. But if you see signs of this on your board, you can be confident that you lot're close to fixing your TV. If you don't come across these signs of failure, but your TV had the tell-tail clicking audio, yous still can exist fairly sure the steps below will gear up your Idiot box

Step 5: Find Bad Capacitors on Your Board

Step five: Discover Bad Capacitors on Your Lath

On the LG LED Television receiver power board pictured above, I have indicated which capacitors yous should be examining for signs of failure. The Capacitors are Aluminum Electrolytic Capacitors, and are the most likely cause of your problem.

Don't worry if your lath looks a niggling unlike. Simply examine all Aluminum Electrolytic Capacitors and usually the faulty i(s) stand out.

Note: Do non bother with the large capacitors (2 or 3 will be on every lath). These are high voltage, rarely fail and for condom require a piffling more expertise to work on.

See Those Red Xs? Leave These Alone — Come across Those Red Xs? Exit These Alone

Tip

Take a picture (or several pictures) of your board. Utilize them to verify re-assembly

Step vi: Removing Capacitors

Capacitors have polarity. What this means is, like a battery, they accept a positive (+) and a negative (-) side. Before removing any capacitor, notation which side the white stripe of the capacitor is facing. Y'all will need to put in the new capacitor in the same management. Takes Notes or Take a moving-picture show, or you will ruin your TV.

At present that you've identified the capacitors that wait bad, plow the board over and carefully place exactly which points on the board are from these capacitors. Circumvolve them with a "sharpie" blazon pen to go on track.

Catch your friend and have them assistance you on this adjacent step. Balancing the circuit board on its side while using a hot soldering iron and pliers can be a bit catchy.

Plug in the soldering fe and requite it 10 minutes to get hot.

With the circuit board on its edge, have your friend grab one of the capacitors with the pliers and utilise a very gentle pulling pressure. Apply the tip of the soldering iron to one lead on the dorsum side of the board and hold it there until y'all see the solder melt. At present switch to the other lead until it melts. Go along going dorsum and forth on the leads. Each time the solder will cook faster. Subsequently going back and forth a couple times the capacitor will easily come out.

Repeat for each capacitor that you lot are replacing.

Tip

Employ desoldering wick or a solder sucker to remove solder from a capacitor lead.

Let the soldering iron do the work. If the capacitor does not easily pull out, do not force information technology.

Having constitute and removed the bad capacitors on your lath, information technology's fourth dimension to purchase new ones. Capacitors are rated for their awarding and you lot must supplant like for like. In that location are three ratings to identify:

uF (micro farads)
Temperature
Voltage

uF (micro farads)

Ideally you lot should friction match the uF and the temperature rating exactly. Just it is acceptable to utilise a capacitor rated higher uF if it is inside 20% of the original.

Temperature

Match the temperature rating, but you lot can get higher if needed. Non Lower!

Voltage

Lucifer if Possible. You can use a larger value if needed. Not Lower!

Where to buy? Often you can find replacements capacitors at your local electronic shop. But it may exist easier to purchase replacements from Amazon.com.

Tip

If your replacement capacitors don't match exactly what was removed, write the original values on the circuit board with a sharpie. If yous always have to supersede them over again you want to try and match the original values.

Step 8: Install New Capacitors — Footstep eight: Install New Capacitors

Stride 8: Install New Capacitors

Insert capacitor, making certain to identify the negative side in the correct location (look at your notes or pictures and confirm). If there is hard solder in the hole, simply utilise the soldering iron until solder melts and skid capacitor leads in.

Curve back the leads to hold the capacitor in place.

Carefully clip the leads so that but about 1/viii" is protruding.

Identify your soldering iron and solder on lead until the heat melts the solder. Once solder melts onto the atomic number 82, apply the iron on the lead and solder a few times to melt the solder cleanly on the lead. If y'all take solder flux, the solder will brand a clean connection.

In one case the Capacitors are installed clean any flux or solder residue with a damp textile.

Stride nine: Contrary the Procedure

Attached the excursion board.
Reattach all wiring harnesses.
Supersede the back cover.
Turn on Telly and exist happy that you lot relieve yourself a ton of coin.

Congratulations! This prepare works. Information technology worked for me, and it worked for hundreds of people reading this and my other articles.

This article is accurate and truthful to the best of the author's cognition. Content is for informational or entertainment purposes only and does non substitute for personal counsel or professional advice in business, fiscal, legal, or technical matters.

Zenawi yigzaw on September 14, 2022:

Thsnk you for your tutorial

Les on July 28, 2022:

I followed your guidelines, which were easy to follow.

My LG switched off and then fabricated clicking sounds.

Took it the dorsum off, but all capacitors appear ok, even the tiny ones.

Gave information technology a proficient hoover and volition check in 24 hours if it's made whatever departure.

Thanks

Paul Hollick on June 09, 2022:

I have a different model LG television, but I was able to follow your steps and diagnose that 3 capacitors had failed.

I managed to buy the capacitors and a solder sucker, and today I fixed my Boob tube.

Thank you for the instructions.

Okoli on May x, 2022:

Sweet article

dan on Oct xv, 2022:

non power on or no led red lights on how to fix it

Nicola Thomson on September 13, 2022:

My LG TV won't come on the crimson light lights up and and then dissapears and lights upwards dorsum and along scarlet and makes 2 clicking noises as if it turns on so off simply screen doesn't come on what could exist the diagnosis dont employ it that ofttimes only brought it out yesterday before that information technology was ii weeks since I had used it and information technology worked fine

Amanda on August xi, 2022:

Cheers for this! We replaced two bad capacitors merely it'south still not working! Y'all can hear information technology turn on a d a few seconds later on it clicks off. Practice you lot accept whatever suggestions for this? Thanks!

How-do-you-do on June 11, 2022:

Hi i have an lg 42le4500 television. The initial logo volition plough on and and then then goes blank screen. If i restart the procedure it does the aforementioned. Could you delight help

Discoverinfo (author) on May 20, 2022:

yes information technology can be the same effect. the status light tin can come up on, significant the unit has ability, merely with bad capacitors the screen wont be able to exist lit upward. (or might come on then go off)

I would definitely at least take off the back over and look for bad capacitors. the jutting tops (ususally) or leaking (less oft) is pretty piece of cake to place.

Jon Co on May 20, 2022:

Hullo at that place,

Give thanks y'all for the detailed guide! The Status light turns on when I striking the power button only null happens on screen - can this be the same issue? or if light is on that means these parts are OK?

Thanks,

Jon

Discoverinfo (writer) on May 12, 2022:

I'm curious to come across how it went? Any updates?

kwishatse. kefa on May 04, 2022:

I have seen your tutorial direction and I. Volition try to put into action and see what on.

Source: https://turbofuture.com/home-theater-audio/LG-TV-Wont-Turn-On