How do I tell whether the main board or power board has failed?

If the TV shows no signs of life at all, the power board is a strong suspect. If the set powers on, plays audio, and shows menus or app screens that crash, the main board likely needs attention. Repeated clicking without picture points to power or main board. Start with symptom matching, then confirm by inspecting part numbers and connectors for visible damage.

Can a T‑Con board cause half‑screen problems?

Yes. The T‑Con synchronizes image data across your panel. If you see one half bright and the other dark, or lines on just part of the screen, the T‑Con or its ribbon connections may be at fault. Reseat the ribbons carefully. If symptoms change sides or improve temporarily, that’s a T‑Con or cable clue. If nothing changes, the panel could be the culprit.

Is it better to replace individual components or swap the whole board?

For most DIYers, swapping the entire board is faster and more reliable. Component‑level repair requires specialized skills and tools, and you can end up chasing multiple parts. A complete board replacement restores factory‑level behavior in one go and reduces the chance of hidden issues remaining.

What if my board’s part number has a slightly different suffix?

Suffixes can indicate revisions. Some are interchangeable; others are not. Always check the listing notes for confirmed substitutions and compare photos for identical connector layouts. When in doubt, match the full part number exactly, especially for main boards and T‑Con boards tied to specific panels.

Are refurbished or pulled boards reliable?

They can be. Many pulled boards come from TVs with cracked screens and have plenty of life left. Refurbished boards can be excellent value when the seller documents testing and any replaced components. Look for clear photos, readable part numbers, and honest condition notes to gauge reliability before you buy.

Unlock Incredible Deals on Circuit Boards in the UK

Television Circuit Boards	Price
Zra-bh15dsm 1 Crystal Led Spare Module P1.5 Bh-series	£1,989.75
Zra-bh12dsm 1 Crystal Led Spare Module P1.2 Bh-series	£2,381.01
Aten 4-port True 4k Hdmi Output Board With Scaler	£2,736.99
Aten 4-port True 4k Hdmi Output Board With Scaler	£2,736.99
Aten 4-port True 4k Hdmi Output Board With Scaler	£2,736.99
Aten 4-port True 4k Hdmi Output Board With Scaler	£2,736.99
Samsung Led Signal Board	£4,332.58

Television Circuit Boards: A Complete UK Buyer’s Guide to Main Boards, Power Supply Boards, and T‑Con Replacements

Why Television Circuit Boards Matter More Than You Think

Crack open almost any modern TV and you’ll find a small city of components living on a handful of circuit boards. These unsung heroes do everything from powering the screen to decoding your streaming apps. When something goes wrong—no picture, no sound, random restarts—it’s often a television circuit board quietly asking for attention. The good news? Swapping the right board can bring a “dead” screen back to life at a fraction of the price of a new set. If you’re in the UK and comparing offers on boards like main boards, power supply boards, and T‑Con boards, you’re in the right place. Let’s walk through the essentials so you can buy with confidence and repair with ease.

Types of TV Circuit Boards Explained

Before you start browsing offers, it helps to know which board does what. TVs might look sleek and simple from the front, but inside, each board is a specialist with a very specific job. Understanding the basics makes troubleshooting faster and shopping easier.

Main Board (Motherboard)

The main board is the brain of the operation. It handles inputs (like HDMI and aerial), manages the operating system, decodes video, and routes audio. If your TV powers on but apps crash, HDMI ports fail, or menus freeze, the main board is a prime suspect. Part numbers on main boards are crucial—brands reuse chassis designs across many models, so you’ll want an exact match or a known cross‑compatible board. Typical cues include silk‑screened codes on the board itself and sticker labels on the connector side.

Power Supply Board (PSU)

The power supply board converts household power into the precise, stable current your TV needs. If your set won’t turn on, clicks repeatedly, or shuts down once it tries to light the screen, the PSU is worth a look. Visual symptoms can include domed capacitors or darkened areas around heat‑heavy components. While component‑level repair is possible for pros, most DIYers opt for a complete board swap for reliability and speed.

T‑Con Board (Timing Controller)

The T‑Con board synchronizes the data that paints images across your panel. It’s tiny but mighty. When you see lines, half‑screen images, washed‑out colours, or bizarre artifacts—especially when audio is fine—the T‑Con often takes the blame. T‑Con boards are tightly matched to the specific panel inside your TV, not just the TV model number, so the panel label is a must‑check before you buy.

LED Driver and Backlight Inverter Boards

For LED sets, a driver board controls backlight brightness. On older LCDs with fluorescent tubes, an inverter board does the job. If your TV has sound but the screen stays dark until you shine a torch at it, the backlight driver or the backlights themselves may be at fault. The fix could be a new driver board or a set of replacement backlight strips paired with a driver that’s known to be healthy.

Wi‑Fi, IR, and Button Boards

Smaller boards still play big roles. Wi‑Fi boards handle wireless connectivity; IR receiver boards pick up your remote; button boards give you manual control when the remote goes missing. If your TV won’t respond to the remote but otherwise works, this is where you look. These parts are usually inexpensive and simple to replace.

Common Symptoms and How to Pinpoint the Faulty Board

Wondering where to start? A few quick checks can help you zero in on the culprit without guesswork. Think of symptom‑matching like detective work: the clues are right there on the screen (or not on the screen).

No Power or Endless Power Cycling

If the standby light never turns on, or your TV clicks on and off in a loop, investigate the power supply board. Unplug the TV for a short while, plug it back in, and listen closely. A faint relay click with no picture? Power board or main board. Fully dead? Power board, fuse, cord, or a main board short pulling the PSU down. When in doubt, start with the PSU—it’s often the most stressed board and the most common failure point.

Sound Without Picture

Hearing the startup sound and even channel audio, but looking at a black screen? That narrows it to T‑Con, LED driver, backlights, or the panel. Shine a torch at the screen: if you can faintly see the image, your backlight system is the likely issue. If you see washed‑out or fragmented images, the T‑Con climbs up the suspect list.

Lines, Ghosting, or Colour Banding

Horizontal or vertical lines, half‑screen effects, solarized colours, or ghosting typically point to the T‑Con or the panel. Reseating the ribbon cables between the T‑Con and the panel can help. Handle those ribbons gently—they’re delicate. If reseating fixes nothing, a matching T‑Con board is a logical next step.

HDMI Ports Not Working or Smart Apps Crashing

No signal on every HDMI port? Apps freezing or crashing? That’s the main board’s playground. Try a different cable and a different device, then soft‑reset your TV. If the issue persists across inputs and sources, the main board is almost certainly the issue and a swap should solve it.

How to Identify the Right Replacement Board

Buying the correct board isn’t hard, but it does require careful matching. Treat it like picking a key for a lock: the shape has to be just right, not just “close enough.” These three steps cover most cases.

Match the TV Model and Exact Part Number

Start with the model number on the TV’s rear label. Then open the set (safely) and read the part number printed on the board and on any white or yellow stickers. Many brands use internal codes—knowing those gives you instant confidence you’re looking at the right listing. If a listing shows a board that visually matches yours and lists your exact part code, you’re in business.

Check Board Revisions and Substitutions

A single part number can have revisions that change tiny details. Some revisions substitute smoothly; others don’t. If a listing says “supersedes” or “compatible with” your code, read the fine print to confirm it’s for your exact screen size, tuner type, and region. Pictures matter: compare connector layout, mounting holes, and heat sink locations.

Confirm the Panel Code for T‑Con Boards

T‑Con compatibility lives and dies by the panel inside your TV, not just the TV model family. Look for a label on the panel itself—usually a long sticker along an edge—and match that with the T‑Con’s application notes in the listing. That extra minute of checking prevents a lot of head‑scratching later.

Popular Brands and Part Series You’ll See in Listings

When you’re comparing offers, certain part series pop up over and over. Spotting these makes searching easier and helps you avoid mismatches. Here are some of the common families you’ll encounter.

Samsung: BN44, BN94, BN41, and Friends

Samsung power boards often carry BN44 codes, main boards BN94 or BN41, and T‑Con boards with panel‑linked labels. If you see a BN44 power board that matches your set’s family and connectors, you’re looking in the right direction. For main boards, BN94 numbers are highly specific—trust those exact codes before model names.

LG: EAX, EAY, and 6871L

LG main boards commonly use EAX codes, power boards EAY, and T‑Con boards carry 6871L‑series codes. The 6871L family is strongly tied to panel types. If your LG TV shows half‑screen or colour inversion, a properly matched 6871L T‑Con is a frequent fix.

Sony, Panasonic, Vizio, TCL, and Vestel Families

Sony main boards often use A‑series codes, Panasonic boards use TXN‑style identifiers, and Vizio and TCL adopt a range of supplier codes. Vestel‑based TVs (widely used across many UK and European brands) often feature 17MB main boards that can cross‑fit across branded models. When you see 17MB in a listing, note the exact suffix to ensure tuner and feature compatibility.

New vs Refurbished vs Pulled Boards

When you compare offers, you’ll see choices: brand‑new boards, refurbished modules, or pulled parts harvested from working sets. Each has a place, and the right choice depends on your budget, timeline, and risk tolerance.

Pros and Cons at a Glance

New boards offer peace of mind and minimal wear, but you’ll usually pay more. Refurbished parts can deliver great value if the seller provides clear testing notes. Pulled boards are often the cheapest route and can work flawlessly—in many cases they’re removed from TVs with cracked screens—but quality varies between sources. Read descriptions carefully and weigh savings against certainty.

What to Check in Any Listing

Look for clear photos, visible part numbers, and a condition description that goes beyond “working.” Notes like “tested with picture and sound,” “no standby issues,” or “fully functional HDMI ports” add confidence. If the board is refurbished, ask what was serviced—capacitors? connectors? cold solder joints? Transparency is your friend when you’re buying critical components.

Safety Essentials and Tools You’ll Want on Hand

Working on TVs is straightforward if you respect a few basics. The inside of a TV contains components that can hold charge even when unplugged, and ribbon cables that don’t like rough handling. Treat it like a precision instrument and you’ll be fine.

Safety Basics Before You Touch a Screw

Unplug the TV and let it sit for a while before you open it. Work on a clean, dry surface large enough for the panel to rest without flexing. Avoid touching metal contacts. Handle boards by their edges and resist the urge to poke around the power section. If you feel out of your depth, pause and get help—no repair is worth a nasty surprise.

Tools That Make the Job Easier

A simple toolkit goes a long way: a crosshead screwdriver, a container for screws, an anti‑static wrist strap, cotton swabs, and isopropyl cleaning pads. A bright work light helps you spot labels and line up connectors. If you’re reseating ribbon cables, take photos before you disconnect them so you can put everything back exactly as it was.

Step‑by‑Step: Installing a Replacement Board

You don’t need a lab coat to replace a TV board. With patience and a methodical approach, most swaps are beginner‑friendly. Here’s a plain‑English walkthrough to set expectations before you start.

Before You Begin

Disconnect power and place the TV face‑down on a soft, flat surface like a folded blanket. Remove the stand if it gets in the way. Take off the rear cover by removing the screws around the perimeter and any in the middle. Note where longer screws go so they return to the same spots later.

Removing the Faulty Board

Identify the board you’re replacing by matching it to your part number. Take a clear photo of all connectors for reference. Unplug connectors by pulling on the plugs, not the wires. For ribbon cables, release the tiny locking tabs before gently withdrawing the ribbon. Unscrew the board, lift it out by the edges, and set it aside somewhere safe.

Installing the Replacement Board

Position the new board and loosely thread the screws so the board can settle into place without stress. Tighten them snugly, but don’t overdo it. Reconnect cables, checking that each one seats fully and any locking tabs snap back into place. Double‑check your work against the photo you took earlier to confirm everything is back where it belongs.

Post‑Install Checks

Before you reattach the rear cover, plug in the TV and try a quick power‑on test. If it starts normally and shows an image, great—power down, unplug, and close it up. If the set still misbehaves, recheck connectors and confirm the part number exactly matches. Sometimes a factory reset from the onscreen menu helps a main board settle in after a swap.

Where to Compare Television Circuit Board Deals in the UK

Hunting for the right board at the right price can feel like finding a needle in a haystack. That’s where comparison platforms shine. Instead of bouncing between dozens of retailers, you can scan multiple offers side by side, zero in on listings that match your part number, and quickly spot fair pricing.

Why Use a Comparison Platform

Comparison platforms let you slice through the noise. Filter by brand and part number, check photos for the exact connector layout, and compare pricing from multiple sources in a single view. It’s the fast lane to the board you actually need, without guesswork or wasted time.

How to Filter and Shortlist Offers

Start with your TV model and the exact board part code. Apply brand filters, then skim thumbnails to find visual matches. Open promising listings and verify the code one more time. If you see mention of panel compatibility for T‑Con boards, confirm it matches your panel label. Save two or three candidates with clear photos and strong condition notes, then choose the best value among them.

Related TV Repair Products Worth Considering

While you’re comparing boards, a few add‑ons can make your repair smoother and your TV more reliable over the long haul. Think of these as the supporting cast that helps the star of the show perform its best.

Backlight Strips, IR Receivers, and Button Boards

If your TV needed a T‑Con or main board, consider the age of the backlights. If the screen was dim or flickered, new backlight strips can restore punchy brightness. If remote control response was flaky, an IR receiver board is an easy, low‑cost swap. And if the physical buttons were unresponsive, a button board replacement is a quick win.

HDMI Switchers, Cables, and Surge Protection

When a main board fails around the HDMI area, it’s often after years of cable stress or device hot‑plugging. Upgrading to quality, well‑fitted HDMI cables reduces strain on ports. An external HDMI switcher can take the wear while your TV’s ports stay safe. And a surge protector adds a layer of defense for the power supply board during rough weather.

Troubleshooting Tips That Save Time and Money

Before you buy, a few quick sanity checks can prevent a misdiagnosis. A careful approach can be the difference between a first‑try fix and a frustrating parts chain.

Rule Out the Simple Stuff First

Try a different outlet and a different input device. Test with a known‑good HDMI cable. Disconnect external devices one by one. If the TV has a hidden hard reset or service reset in its menus, try that before you open anything. Simple steps can expose a flaky cable or a misbehaving streaming stick masquerading as a TV problem.

Use the “Half‑Split” Strategy for Picture Faults

When only half the screen misbehaves, gently reseat the ribbon cable feeding that half. If the problem moves from one side to the other when you swap ribbons, the T‑Con is a strong candidate. If it stays on the same half no matter what, the panel itself may be at fault, and replacing boards won’t cure it.

Photograph Everything

Before you disconnect anything, take crisp photos of cable paths and connectors. It’s the easiest insurance policy you’ll ever take. When you reinstall, match the photos wire for wire and port for port. No guesswork, no stress.

Sustainability and the Right‑to‑Repair Angle

Every successful board replacement keeps a TV out of the waste stream and money in your pocket. Instead of binning a full set because one module failed, you’re swapping a targeted part and extending the lifespan of your gear. That’s good for your budget and good for the planet. You also learn more about your tech in the process—once you’ve done one repair, the next one feels easy.

What Makes a Listing “Trustworthy” at a Glance

When you’re scanning pages of offers, a few markers separate the gems from the gambles. Clear, multiple photos that show the front and back of the board. A readable close‑up of the part number. Notes on testing—especially for main boards and T‑Cons. A straightforward condition label that matches the photos. If the listing ticks those boxes and the price aligns with similar offers, you can buy with confidence.

Conclusion

Television circuit boards might be hidden, but they’re the beating heart of your TV. Whether you’re chasing down a no‑power fault, reviving a dark screen, or fixing glitchy HDMI ports, the path forward is clear: identify the right board, match the exact part number, and compare offers to get a fair price. With a little patience, a few photos, and a careful hand, you can bring a tired set back to full health. The result feels a bit like magic: one board swap, and your living room screen springs to life again. Ready to start comparing? Line up your model and part codes, shortlist the best‑looking listings, and enjoy the satisfaction of a smart, budget‑friendly repair.

Television Circuit Boards

Television Circuit Boards	Price
Zra-bh15dsm 1 Crystal Led Spare Module P1.5 Bh-series	£1,989.75
Zra-bh12dsm 1 Crystal Led Spare Module P1.2 Bh-series	£2,381.01
Aten 4-port True 4k Hdmi Output Board With Scaler	£2,736.99
Aten 4-port True 4k Hdmi Output Board With Scaler	£2,736.99
Aten 4-port True 4k Hdmi Output Board With Scaler	£2,736.99
Aten 4-port True 4k Hdmi Output Board With Scaler	£2,736.99
Samsung Led Signal Board	£4,332.58

Television Circuit Boards: A Complete UK Buyer’s Guide to Main Boards, Power Supply Boards, and T‑Con Replacements

Why Television Circuit Boards Matter More Than You Think

Types of TV Circuit Boards Explained

Main Board (Motherboard)

Power Supply Board (PSU)

T‑Con Board (Timing Controller)

LED Driver and Backlight Inverter Boards

Wi‑Fi, IR, and Button Boards

Common Symptoms and How to Pinpoint the Faulty Board

No Power or Endless Power Cycling

Sound Without Picture

Lines, Ghosting, or Colour Banding

HDMI Ports Not Working or Smart Apps Crashing

How to Identify the Right Replacement Board

Match the TV Model and Exact Part Number

Check Board Revisions and Substitutions

Confirm the Panel Code for T‑Con Boards

Popular Brands and Part Series You’ll See in Listings

Samsung: BN44, BN94, BN41, and Friends

LG: EAX, EAY, and 6871L

Sony, Panasonic, Vizio, TCL, and Vestel Families

New vs Refurbished vs Pulled Boards

Pros and Cons at a Glance

What to Check in Any Listing

Safety Essentials and Tools You’ll Want on Hand

Safety Basics Before You Touch a Screw

Tools That Make the Job Easier

Step‑by‑Step: Installing a Replacement Board

Before You Begin

Removing the Faulty Board

Installing the Replacement Board

Post‑Install Checks

Where to Compare Television Circuit Board Deals in the UK

Why Use a Comparison Platform

How to Filter and Shortlist Offers

Related TV Repair Products Worth Considering

Backlight Strips, IR Receivers, and Button Boards

HDMI Switchers, Cables, and Surge Protection

Troubleshooting Tips That Save Time and Money

Before you buy, a few quick sanity checks can prevent a misdiagnosis. A careful approach can be the difference between a first‑try fix and a frustrating parts chain.

Television Circuit Boards

Samsung Led Signal Board

Aten 4-port True 4k Hdmi Output Board With Scaler

Asus 04020-03081900 Monitor Spare Part Mainboard

Asus 04020-01460700 Monitor Spare Part Button Board

Zra-bh15dsm 1 Crystal Led Spare Module P1.5 Bh-series

Zra-bh12dsm 1 Crystal Led Spare Module P1.2 Bh-series

Asus 04020-026950em Monitor Spare Part Power Board

Asus 04020-037923em Monitor Spare Part Power Board

Asus 04020-047401em Monitor Spare Part Power Board

Asus 04020-009913em Monitor Spare Part Power Board

Television Circuit Boards price list

Questions and answers about Television Circuit Boards

How do I tell whether the main board or power board has failed?

Can a T‑Con board cause half‑screen problems?

Is it better to replace individual components or swap the whole board?

What if my board’s part number has a slightly different suffix?

Are refurbished or pulled boards reliable?

Television Circuit Boards: A Complete UK Buyer’s Guide to Main Boards, Power Supply Boards, and T‑Con Replacements

Why Television Circuit Boards Matter More Than You Think

Types of TV Circuit Boards Explained

Main Board (Motherboard)

Power Supply Board (PSU)

T‑Con Board (Timing Controller)

LED Driver and Backlight Inverter Boards

Wi‑Fi, IR, and Button Boards

Common Symptoms and How to Pinpoint the Faulty Board

No Power or Endless Power Cycling

Sound Without Picture

Lines, Ghosting, or Colour Banding

HDMI Ports Not Working or Smart Apps Crashing

How to Identify the Right Replacement Board

Match the TV Model and Exact Part Number

Check Board Revisions and Substitutions

Confirm the Panel Code for T‑Con Boards

Popular Brands and Part Series You’ll See in Listings

Samsung: BN44, BN94, BN41, and Friends

LG: EAX, EAY, and 6871L

Sony, Panasonic, Vizio, TCL, and Vestel Families

New vs Refurbished vs Pulled Boards

Pros and Cons at a Glance

What to Check in Any Listing

Safety Essentials and Tools You’ll Want on Hand

Safety Basics Before You Touch a Screw

Tools That Make the Job Easier

Step‑by‑Step: Installing a Replacement Board

Before You Begin

Removing the Faulty Board

Installing the Replacement Board

Post‑Install Checks

Where to Compare Television Circuit Board Deals in the UK

Why Use a Comparison Platform

How to Filter and Shortlist Offers

Related TV Repair Products Worth Considering

Backlight Strips, IR Receivers, and Button Boards

HDMI Switchers, Cables, and Surge Protection

Troubleshooting Tips That Save Time and Money

Rule Out the Simple Stuff First

Use the “Half‑Split” Strategy for Picture Faults

Photograph Everything

Sustainability and the Right‑to‑Repair Angle

What Makes a Listing “Trustworthy” at a Glance

Conclusion

Television Circuit Boards price list

Questions and answers about Television Circuit Boards

How do I tell whether the main board or power board has failed?

Can a T‑Con board cause half‑screen problems?

Is it better to replace individual components or swap the whole board?

What if my board’s part number has a slightly different suffix?

Are refurbished or pulled boards reliable?

Television Circuit Boards: A Complete UK Buyer’s Guide to Main Boards, Power Supply Boards, and T‑Con Replacements

Why Television Circuit Boards Matter More Than You Think

Types of TV Circuit Boards Explained

Main Board (Motherboard)

Power Supply Board (PSU)

T‑Con Board (Timing Controller)

LED Driver and Backlight Inverter Boards

Wi‑Fi, IR, and Button Boards

Common Symptoms and How to Pinpoint the Faulty Board

No Power or Endless Power Cycling