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Neo QLED and QLED
Backlight, power, mainboard and Tizen faults.

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Samsung TV repairs
Samsung is the most common television in South African homes, which means we know its failure patterns better than any other brand. Most of them are entirely repairable.
Samsung builds a great many televisions and sells more of them here than anyone else, so we see the full range — from entry-level LED sets in student flats to 85-inch Neo QLEDs in Sandton. Across all of them, a fairly consistent set of faults recurs.
Power supply failures dominate, and that is a South African phenomenon rather than a Samsung one. The surge when the grid returns after load-shedding lands on the power board, and Samsung power boards fail the way everybody’s power boards fail. They are, importantly, very repairable.
Beyond that: backlight strip failure producing a black screen with perfect sound; the One Connect box, which is a wonderful idea until it goes wrong; Tizen boot loops and frozen menus; and dead HDMI ports, usually surge-related. All fixable, and none of them a reason to buy a new television.
The detail
If your Samsung is doing one of these, you are in familiar territory.
Classic Samsung power supply fault. The standby rail is alive but the main rails will not come up. Very frequently repairable at component level, and one of the most common jobs we do.
Samsung uses LED backlight strips across its LED and QLED ranges, and they degrade with heat. Do the torch test: if you can faintly see a picture, the panel is fine and the backlight needs replacing.
Samsung’s One Connect box moves all the inputs and the power supply into a separate unit connected by a single cable. When it fails, the television appears completely dead. In many cases the box is the fault and the television is perfectly healthy — a very important distinction.
The Samsung logo appears, the set restarts, and it does it again. Corrupted firmware. A recovery reloads a clean image and it costs nothing in parts.
Surge damage, almost always. Samsung HDMI ports and their protection circuitry sit on the mainboard, and they can usually be repaired without replacing the whole board.
A repeated click is the protection circuit attempting to start and shutting down. Usually the power board, occasionally a backlight fault dragging it out of tolerance.
What you get
Every panel technology Samsung has sold here.
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Backlight, power, mainboard and Tizen faults.
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The volume sellers, and the sets we repair most.
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Including One Connect box faults.
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Handled by two technicians, always.
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Still repairable, and often still worth it.
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Where the ‘TV sound fault’ is actually the soundbar.
Included
Diagnosis first, then a fixed price.
Full power rail testingStandby and main rails, under load
Backlight string measurementIndividually tested, not assumed
One Connect box testingWhere fitted — it is often the culprit
Tizen firmware assessmentRecovery attempted before any hardware is touched
HDMI and input testingEvery port, with your own devices
Warranty checkIf it is still covered, we will tell you
Our process
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It is on a sticker on the back. It tells us a great deal.
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Power, backlight, One Connect, firmware and inputs.
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Agreed before any work starts.
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Every input, the picture, the sound and the smart platform.
FAQ
The things people actually ask us on the phone, answered straight.
WhatsApp us the make, the screen size and a short video of what the TV is doing. We can usually narrow the fault down before a technician is even dispatched.
WhatsApp 063 866 0971That is the single most common Samsung fault we see. The standby rail is working — hence the red light — but the main power rails are not coming up when you press power. It is a power supply board fault, and it is usually repairable at component level for a fraction of the cost of a new television.
On many premium Samsung sets, all the inputs and much of the power supply live in a separate box connected to the television by a single thin cable. It keeps the television slim. It also means that when the box fails, the television appears completely dead — even though the television itself is perfectly fine. If your Samsung has a One Connect box, testing it is one of the first things we do.
Backlight failure, in the great majority of cases. Shine a torch at a sharp angle across the screen. If you can faintly make out a picture, the panel is alive and only the LED backlight has failed — which is an affordable, straightforward repair.
A Tizen boot loop, caused by corrupted firmware. A firmware recovery reloads a clean image, and it costs you nothing in parts. Do not let anyone quote you for a mainboard before this has been attempted.
No. We do not repair cracked or broken screens on any television, and we do not buy broken TVs. A replacement Samsung panel costs more than a new set of the same size.
For the common failures — power board components, backlight strips, capacitors, HDMI ports — yes, readily. For model-specific mainboards on older sets, sometimes not, which is where component-level repair becomes essential.
Book a TV technician
Give us the model number and describe what happens when you press power. We can usually tell you what it is before we arrive.
Samsung TV repairs on site across Gauteng
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