LED Guide
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How to Choose an LED Screen Supplier

How to judge an LED screen supplier on what happens after the sale: spare parts, bin matching, warranty terms and who actually does the repair work.

By Alex Snelling9 min readPublished
An engineer working at a laptop on an electronics production line
Photo by ThisisEngineering on Unsplash

Most buying advice focuses on the panel: pitch, brightness, refresh rate, IP rating. Those matter, and they are also the easy part, because they are written on a datasheet and you can compare them.

The harder and more consequential judgement is the supplier. The panel specification is what you get on day one. The supplier is what you get for the next ten years, every time a module fails, every time you want to extend the screen, every time something is not right. This guide is about judging that.

Judge on What Happens After the Sale

Every supplier is helpful before you buy. The differences appear afterwards, so ask questions whose answers reveal what afterwards looks like.

  1. What spare parts do you hold in the UK, and how fast do they ship? Stock held locally means days. "We can get it from the factory" means weeks.
  2. How long have you sold this specific product line? A line discontinued in two years means no matching cabinets when you want to extend.
  3. Will you supply the same LED bin if I buy more cabinets later? If they cannot promise it, your extension will not colour match.
  4. Who does the warranty repair work, and where? In-house means a turnaround they control. Returned to the manufacturer means a turnaround nobody controls.
  5. Who pays freight in each direction on a warranty claim? This is a real cost on heavy items and it is routinely left unstated.
  6. Can I visit a screen you supplied two or three years ago? New demos always look good. Age is what reveals LED quality and calibration.
Tip: Ask the spare parts question first. The answer tells you more about how a supplier will treat you than anything else on the list, and it is hard to give a good answer to if the honest one is bad.

The Reference Site Test

A supplier who has been selling in your market for a while can show you screens that have been running for years. One who cannot is either new, or has nothing they want you to see.

When you visit, look for the things that only show with age:

  • Patchiness between cabinets on a white or light grey image. This is LED bin variation showing up as the panels age at slightly different rates.
  • Visible seams where cabinets meet, which suggests calibration has drifted and not been redone.
  • A colour cast across the whole screen, usually towards red or purple, as the green channel fades faster than red and blue.
  • Dead pixels or dark modules that have not been replaced, which tells you about spare parts availability more honestly than any answer will.

UK Supplier or Direct Import

Direct import is genuinely cheaper per panel. The question is what the saving costs you elsewhere.

ConsiderationUK supplierDirect import
Price per panelHigherLower, sometimes substantially
Spare partsOften stocked locallyShipped from the factory
Warranty claimOne conversationFreight, customs and a time difference
Technical supportSomeone to callEmail, often across a language barrier
Lead time on a faultDays if stockedWeeks
Who carries the riskLargely the supplierEntirely you

For a first purchase, buy locally. You are paying for someone to answer the phone when something you do not yet understand goes wrong, and that is worth real money the first time it happens. Once you know the product well and hold your own spares, the calculation changes.

Warning: If you do import directly, budget for a meaningful spares holding as part of the purchase, not as an afterthought. The saving disappears entirely the first time a show cannot open.

Reading a Suspiciously Cheap Quote

A quote well below the others is not necessarily dishonest. It is usually quoting something different. The productive response is to ask what, rather than to assume the worst or the best.

  • Is it bare cabinets, with the controller, cabling, cases and spares excluded?
  • What LED bin grade is specified? Wider tolerance LEDs are cheaper and show as patchiness within a couple of years.
  • What is the refresh rate? A 960 Hz screen is cheaper and unusable on camera.
  • What is the warranty length, and does it cover parts only or parts and labour?
  • Is installation and commissioning included, or quoted separately later?

Any of these can be a reasonable trade if you make it deliberately. The problem is only when you find out afterwards.

Warranty Terms Worth Reading Properly

Warranty length is the headline, and it is the least interesting part. What matters is what the warranty actually does when you use it.

  • Parts only, or parts and labour? Parts-only on a screen four metres up is not much of a warranty.
  • When does it start: delivery, or commissioning? These can be months apart on a construction project.
  • Is it replacement, repair, or a credit? Repair means your cabinet goes away for an unknown period.
  • Who pays carriage each way, on heavy and bulky items?
  • Is there an advance replacement option, where the spare ships before the faulty unit comes back?
Note: Advance replacement is the term worth negotiating hardest for. It converts a warranty claim from a period with no screen into a period with a screen, which is the only difference that matters operationally.

Shortlisting

A workable process, in order:

  1. Get three quotes for the same specification, written the same way, so they are actually comparable.
  2. Ask all three the spare parts and bin matching questions, and note who answers directly.
  3. Ask each for a reference site more than two years old, and visit at least one.
  4. Compare warranty terms on substance, not length.
  5. Only then compare price, and only across quotes that cover the same things.

Done in that order, price becomes the last filter rather than the first, which is the right way round for a purchase you will live with for a decade.

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Frequently Asked Questions

Should I buy from a UK supplier or import directly?
For a first purchase, buy locally. Importing is cheaper per panel and much more expensive when something goes wrong: no local spares, warranty claims across a time zone and a language barrier, and freight both ways at your cost. Once you know the product and can carry your own spares, direct import becomes more reasonable.
What is the most important question to ask a supplier?
What spare parts do you hold in the UK, and how quickly do they ship. "We can get it from the factory" means weeks, and weeks means a screen you cannot use.
How do I know if a supplier is just a reseller?
Ask who does the warranty repair work and where. A reseller with no technical capability will send everything back to the manufacturer, which sets your repair turnaround regardless of what the warranty document says.
Does the manufacturer brand matter more than the supplier?
The supplier matters more day to day. A well-known panel brand bought through a supplier with no stock, no engineers and no commitment to the product line still leaves you stranded when a module fails.
Can I trust a supplier who quotes far below everyone else?
Ask what is different rather than assuming bad faith. Usually the quote excludes items others included, or specifies a lower LED bin grade, a lower refresh rate, or a shorter warranty. Any of those can be a legitimate choice if you make it knowingly.