Specialist same-day repairs on LG OLED, NanoCell, UHD and webOS Smart TVs across Johannesburg, Sandton, Pretoria, Midrand and the rest of Gauteng.
Send us your LG model and fault — we'll respond within minutes on WhatsApp.
LG holds a particular place in the South African television market — while not always the volume leader, LG owners tend to be discerning, picture-quality-focused customers who specifically chose LG for one reason: OLED. LG is the world's only producer of large-format OLED TV panels, supplying not only its own OLED ranges but also OLED panels used by Sony, Philips and Panasonic. That makes LG OLED the de facto premium standard for picture quality, and it makes LG-specialist repair work a niche worth getting right.
Common LG TV models we see in our Gauteng workshop include the C Series OLEDs (C1, C2, C3, C4) which are by far the most popular OLED in South Africa; the B Series entry-level OLED; the flagship G Series Gallery OLED with brightness-boosted MLA panels; the NanoCell range (Nano75 through Nano90); LG's UHD LED Smart TVs (UQ7000, UR7800 and similar); the older but still common 4K UHD ranges (UK6300, UN7300); and increasingly the new QNED Mini-LED hybrid sets that combine quantum dots with NanoCell tech.
What makes LG repair work different is the OLED panel itself. Unlike LED-backlit LCDs, an OLED panel is self-emissive: each pixel generates its own light. There is no backlight to replace because there is no backlight. That changes everything about how faults present and how they're repaired. A "no picture" complaint on an LG OLED is almost never a backlight issue (those don't exist on OLED) and is usually a T-Con board, main board, or ribbon-cable problem. webOS is LG's smart platform — a Linux-based OS unique to LG that requires specific firmware tools and recovery procedures. Magic Remote pairing, ThinQ AI features, and LG Content Store sync issues are LG-specific software problems that LG-trained technicians fix quickly. At Nathtec we've invested in the OLED-specific service training, webOS recovery tools, and parts inventory needed to be genuine LG specialists — not generic TV technicians.
From OLED T-Con faults to webOS boot loops, NanoCell backlight issues and Magic Remote pairing failures — these are the LG issues that fill our Gauteng workshop every week. Almost all are repairable, most for far less than buying a new TV.
An LG TV that won't power on usually has a failed power-supply board or, in rarer cases, a webOS firmware failure that prevents boot. Common symptoms include a clicking sound from the back of the chassis, a red standby LED that won't turn green, or the TV briefly flashing on then dying. Our technicians diagnose the SMPS, replace bulged capacitors and faulty FETs, and recover webOS where necessary — typically R780 to R1,800.
Vertical coloured lines or visible banding on an LG OLED panel is almost always a T-Con (timing controller) board fault or a loose LVDS ribbon cable. The good news is that both are repairable. We carefully open the panel back, re-seat or replace the LVDS ribbon cables, and swap the T-Con board with a matched OEM part. LG OLED T-Con replacement is typically R1,450 to R2,650 and the result is a panel that looks brand new.
LG audio problems range from completely silent output to distorted speaker buzzing or dropouts when switching inputs. Causes include the on-board audio amplifier IC, HDMI-ARC handshake failures (especially with LG Soundbars), and Bluetooth pairing issues for LG Sound Sync. Most LG audio repairs are completed same-day for R900 to R1,900. We also handle complete speaker driver replacement on LG's slimmer OLED ranges.
On LG NanoCell and UHD LED models, sound working but black screen is most commonly a backlight LED strip failure. NanoCell uses a nano-particle layer over a conventional LED backlight, so when the backlight fails, the sound continues normally but the image is invisible. We confirm with a torch test, then replace the LED strips with matched-brightness OEM equivalents. Typical NanoCell 55-inch backlight job: R2,200 to R3,400.
LG HDMI ports get heavy use, particularly with gaming setups using LG's superb 4K 120Hz HDMI 2.1 inputs for PlayStation 5 and Xbox Series X. Constant cable swapping leads to bent pins, loose sockets and HDMI handshake controller damage. We replace damaged ports with genuine HDMI sockets and re-test signal integrity, ALLM and VRR functionality. Most LG HDMI repairs are R660 to R950, same-day.
LG OLED panels are self-emissive, which gives them perfect black levels but also creates the potential for image retention with static content. Mild retention is usually correctable using LG's built-in Pixel Refresher (a 1-hour panel-reset cycle). Severe permanent burn-in is rare but unrecoverable without a full panel replacement — usually not economical. We diagnose, run extended Pixel Refresher, and advise honestly.
LG main boards (typically labelled EAX or EBR followed by an 8-digit code) handle signal processing, webOS execution, HDMI routing and audio. When they fail, you'll see "no signal" errors, randomly powering off, or webOS crashes. We perform component-level diagnostics and replace the board only when essential. LG main-board repairs range R1,800 to R4,200 depending on model and the part availability.
An LG TV that boots to the LG logo and never advances is almost always webOS partition corruption — usually caused by power interruption during a firmware update. We use LG service-mode access, USB recovery procedures, and where necessary eMMC reflows to restore the partition. Most webOS recoveries are completed same-day for R1,050 to R1,800 without losing your settings or apps.
Magic Remote pairing failures, ThinQ AI hub issues, Wi-Fi modules that won't see networks, Bluetooth audio that stutters, AirPlay 2 problems — LG smart connectivity issues are common as the platform evolves. Most are software fixes or simple Wi-Fi module replacements. We diagnose and resolve all webOS connectivity faults across every generation of LG Smart TV.
LG produces two completely different display technologies — self-emissive OLED and LED-backlit NanoCell/UHD. Their faults are different, their repair costs differ, and the diagnostic approach is different. Here's our honest LG repair pricing guide.
LG OLED Trained
The vast majority of LG faults are economically repairable. The one exception is a physically damaged OLED panel — the panel itself is the most expensive component in the whole TV, and is rarely worth replacing. Everything else is fixable for a fraction of new-TV cost.
| LG Fault | Typical Cost (ZAR) | Verdict |
|---|---|---|
| HDMI port replacement | R660 – R950 | Repair |
| Power-supply (SMPS) repair | R780 – R1,800 | Repair |
| webOS firmware re-flash | R1,050 – R1,800 | Repair |
| NanoCell/UHD backlight (43"–55") | R1,800 – R2,900 | Repair |
| NanoCell/UHD backlight (65"–77") | R2,900 – R4,500 | Repair |
| OLED T-Con board replacement | R1,450 – R2,650 | Repair |
| OLED main board (EAX) | R2,200 – R4,200 | Repair |
| Pixel Refresher / burn-in recovery | R550 – R900 | Repair |
| Cracked OLED panel | R12,000+ (often not viable) | Consider replacement |
LG isn't the most-sold TV brand in South Africa, but it punches well above its weight in our workshop because LG owners care about picture quality — and they're determined to fix their LG rather than replace it. Walk through our Gauteng workshop on any given day and you'll see LG C-series OLEDs from Sandton awaiting T-Con board replacement, NanoCells from Centurion having backlight strips swapped, webOS-stuck UHDs from Soweto getting recovery flashes, and the occasional flagship G-Series Gallery OLED from Pretoria for HDR-driver work. The combined volume gives us deep expertise: we know every common LG fault, on every model, and we know how to fix it economically and warranty-backed.
Our LG specialist work is backed by genuine LG-grade replacement parts, sourced through trusted authorised distributors. T-Con boards matched to the exact panel revision (LG OLED panels have multiple T-Con versions for the same model year — the wrong board will work, then mysteriously fail). LED backlight strips matched to OEM brightness specification. EAX/EBR main boards verified against original firmware. We never use grey-market parts that fail again three months later. Every LG repair from Nathtec includes a 90-day workmanship and parts warranty, transparent fixed pricing agreed upfront, a no-fix-no-fee policy on minor faults, and in-home service for OLED panels and any TV 55 inches or larger (we strongly recommend this for OLED — the panels are extremely thin and can flex during transport, potentially damaging the panel layers themselves).
From webOS software faults to OLED T-Con replacements, every LG repair scenario is handled in-house by certified LG-trained technicians.
Wi-Fi issues, ThinQ AI glitches, Magic Remote pairing, app crashes, firmware re-flash, AirPlay 2 fixes and boot-loop recovery on every webOS generation.
Book RepairBacklight failure, dim picture, flicker and LED strip replacement on LG UQ, UR and older UHD Smart LED ranges.
Book RepairSpecialist NanoCell panel diagnostics, backlight strip replacement and main-board work on Nano75, Nano80, Nano85 and Nano90 Series.
Book RepairSpecialist self-emissive OLED panel work including T-Con, LVDS, EAX main board and Pixel Refresher recovery on B, C, G and Z Series.
Book RepairBlack screen with sound on LG NanoCell or UHD? We replace failed LG-spec LED backlight strips and drivers with matched-brightness parts.
Book RepairBent, loose or non-responsive LG HDMI 2.1 ports rebuilt or replaced with genuine sockets. ALLM and VRR re-tested.
Book RepairComponent-level LG main-board repair, eMMC reflows and replacement with verified OEM boards where required.
Book RepairLG SMPS rebuilds — capacitor, MOSFET and resistor-level component replacement on every no-power LG TV.
Book RepairNo sound, distorted audio, HDMI-ARC handshake and LG Sound Sync soundbar pairing faults resolved with quality LG parts.
Book RepairHonest LG OLED image-retention assessment, extended Pixel Refresher cycle, panel-health reporting and warranty advice.
Book RepairFrom OLED in-home repairs in Sandton to NanoCell backlight work in Soweto, our LG-trained team covers the entire province. In-home service is strongly recommended for any LG OLED — transport flex can damage these ultra-thin panels.
Not seeing your suburb? We cover the entire Gauteng province. Call 078 721 3551 to confirm LG service for your area.
While LG OLED is one of our specialist categories, our technicians are equally capable on every other major TV manufacturer in South Africa.
Genuine reviews from genuine Gauteng LG repair customers. Real OLEDs, real NanoCells, real five-star feedback.
"My LG C2 OLED developed a thin vertical line down the right side of the screen — I thought it was finished. Another repair shop quoted a panel replacement at R18,000. Nathtec diagnosed a loose LVDS ribbon, reseated the connections and replaced the T-Con for R1,900. The TV is perfect six months later. These guys actually know LG OLED."
"LG NanoCell 65" suddenly had no picture but sound was fine. Phoned Nathtec on a Friday afternoon, technician was at our place in Centurion by Saturday lunchtime. Backlight strips replaced in our home, no transport stress, finished by 4pm same day. Honest quote, professional work, 90-day warranty. Brilliant service."
"LG webOS got stuck on the boot logo after a load-shedding-related firmware crash — total nightmare with a one-year-old TV. Nathtec recovered webOS through the service mode, kept all my apps and settings, fixed it on a Sunday for far less than I expected. Highly recommend if you've got an LG that's misbehaving."
The most common LG-specific questions we get asked — from OLED burn-in to webOS troubleshooting. Still got questions? Call or WhatsApp us anytime.
An LG TV that won't turn on is usually caused by a failed power-supply board, capacitor failure, or webOS firmware corruption. A clicking sound from the back of the TV, or a red standby LED that won't progress to green, points to a power-board fault. A TV stuck on the LG logo indicates a webOS partition issue. Both are typically same-day repairs at our Gauteng workshop — R780 to R1,800 for power-supply work, R1,050 to R1,800 for webOS recovery.
LG OLED repairs typically range from R1,100 to R5,400 depending on the fault. T-Con board faults are usually R1,450 to R2,650, main board (EAX) replacements R2,200 to R4,200, and power-supply repairs R900 to R1,900. Cracked OLED panels are normally not economical to replace because the panel itself is the most expensive single component — often R12,000 or more on its own. We always quote honestly before any work begins.
Mild image retention on LG OLED is often correctable using the built-in Pixel Refresher cycle in the OLED Care menu. We run an extended Pixel Refresher and assess panel health. Severe permanent burn-in (such as visible logos burned in from long-term news-channel viewing) cannot be removed without panel replacement, which is rarely economical. We diagnose the type and severity of retention and advise honestly — including whether you may still be covered under LG's burn-in warranty.
Yes. webOS repairs are a daily occurrence in our workshop. We handle firmware re-flashing, Magic Remote pairing issues, ThinQ AI connectivity problems, app crashes, Wi-Fi module replacement and webOS boot-loop recovery on every generation of LG Smart TV from webOS 3.0 through the latest webOS 24. We also resolve LG Content Store sync issues, AirPlay 2 problems and Bluetooth audio dropouts.
Most LG TV repairs are completed same-day, provided spare parts are in stock. HDMI ports, power-supply repairs, audio faults and webOS firmware recovery are typically same-day jobs. LG OLED panel-level work (T-Con replacement, ribbon cable repair, LVDS reseating) usually takes 24 to 48 hours due to the delicate handling and full functional re-testing required.
Vertical banding or coloured lines on an LG OLED are almost always a T-Con board fault or a damaged LVDS ribbon cable connection between the T-Con and the panel. Both are repairable. T-Con board replacement on an LG OLED is typically R1,450 to R2,650. Permanent panel-level damage causing lines is rare and usually only happens after physical impact to the screen.
Yes. LG NanoCell uses a nano-particle filter layer over a conventional LED backlight to widen the colour gamut. Common NanoCell faults we see are backlight LED strip failures (causing dim or dark areas), webOS issues, and HDMI port damage. All are repairable in our Gauteng workshop — typically same-day or 24-hour turnaround. Average NanoCell 55-inch backlight repair: R2,200 to R3,400.
Yes. For LG OLED and large-screen NanoCell TVs we strongly recommend in-home service. OLED panels are particularly thin and vulnerable to flex damage during transport. Our mobile workshop covers Johannesburg, Sandton, Randburg, Midrand, Pretoria, Centurion, Roodepoort, Kempton Park, Boksburg, Germiston, Alberton and Soweto. Book by phone or WhatsApp on 078 721 3551.
From an LG C2 OLED in Bryanston to a NanoCell 55-inch in Soweto, our LG-trained team is on standby. Call, WhatsApp or send us a message and we'll have a technician on your case within hours.
If you own an LG television in South Africa, you almost certainly chose it for one of two reasons: the picture quality of OLED, or the user-friendliness of webOS. Both are class-leading. Both have specific failure modes that require specialist repair knowledge. At Nathtec TV Repairs, we've built our LG service practice around exactly those specialisations — serving customers across Johannesburg, Sandton, Pretoria, Midrand, Centurion, Randburg, Roodepoort, Kempton Park, Boksburg, Germiston, Alberton and Soweto.
LG occupies a fascinating position in the global TV industry. It is the sole producer of large-format OLED TV panels — supplying not only its own ranges but also the OLED panels used by Sony, Philips and Panasonic. This means that anyone with deep LG OLED experience effectively has deep OLED experience full stop. Our technicians' knowledge of WRGB OLED structure, of LG OLED T-Con and LVDS architecture, of webOS partition layouts, of EAX/EBR main-board variants, transfers directly to the equally fast-growing LG NanoCell, UHD LED and new QNED Mini-LED ranges. We are LG specialists by depth and by daily volume.
We source LG replacement parts through authorised distributors — never grey-market boards or generic LED strips. T-Con boards are matched to the exact panel revision (a critical detail many LG technicians miss: the same TV model can ship with two or three different T-Con revisions across its production run). LED backlight strips for NanoCell and UHD models are matched to OEM brightness specification. EAX main boards are verified against original firmware. Every part we install is the part LG would have used at the factory.
LG's OLED line-up is the headline reason most Gauteng customers chose LG, and it's where we do most of our LG specialist work. The C Series is by far the most popular in South Africa — we see C1, C2, C3 and increasingly C4 models almost daily. The B Series entry-level OLEDs are slightly less common but identical in repair approach. The G Series Gallery OLEDs are the brightness-boosted MLA panels designed for wall mounting, and they have unique gallery-mode mounting electronics. The Z Series 8K OLEDs are rare but spectacular; we've serviced a handful and have the diagnostic tooling for them. Common LG OLED faults we fix daily: T-Con board failures (vertical lines, half-screen), LVDS ribbon cable damage (intermittent picture), main-board failures (no signal recognition), Pixel Refresher issues (mild image retention), and HDMI 2.1 port damage from gaming cable swapping.
LG NanoCell sits between affordable UHD and premium OLED, using a nano-particle absorbing layer over a conventional LED backlight to widen colour purity. Nano75, Nano80, Nano85 and Nano90 are the volume sellers in South Africa. NanoCell sets in our workshop most commonly arrive with two issues: failed LED backlight strips (causing dim or dark patches across the screen) and webOS smart TV faults. Backlight repair on a NanoCell 55-inch is R2,200 to R3,400, on a 65-inch R2,900 to R3,400. We stock LG-spec backlight strips for the 20 most-popular NanoCell models.
webOS is LG's proprietary Linux-based smart TV operating system, and it's genuinely one of the best smart TV platforms on the market. But like any OS, it occasionally goes wrong — especially when interrupted during firmware updates by load-shedding. The most common webOS faults we see are boot loops (LG logo stuck), partition corruption (Smart Hub crashes), Magic Remote pairing failures, ThinQ AI hub failures, Wi-Fi module faults, and Bluetooth audio dropouts. We use LG service mode access, USB recovery procedures, and where necessary eMMC reflows to restore webOS without losing customer settings or installed apps. Most webOS recovery is done same-day for R1,050 to R1,800.
LG's UHD LED range — UQ7000, UR7800, UN7300, UK6300 and many variations — is the workhorse of LG's South African line-up. These are excellent affordable 4K TVs that age very well, but after three to five years of daily use we routinely see backlight strip degradation and capacitor swelling on the SMPS. Both are completely repairable for a fraction of replacement cost. UHD backlight strip replacement is typically R1,800 to R2,900 for 43" to 55", R2,900 to R4,500 for 65" to 77". Power-supply rebuild is usually R780 to R1,800. We routinely give LG UHDs another five years of reliable life.
We hold inventory of LG-spec parts for every common fault — HDMI ports, backlight strips for the top 25 LG models, OLED T-Con boards for C-series sets, SMPS components, and webOS recovery USBs. That parts-on-hand position is why we can offer genuine same-day LG TV repair across Johannesburg, Sandton, Pretoria, Midrand, Randburg and Soweto.
For any LG OLED, in-home service is strongly recommended. OLED panels are physically the thinnest TV panels ever made — some LG OLED models are barely 4mm thick at the top edge. Even small amounts of flex during transport can damage the WRGB pixel layer. Our in-home OLED service eliminates that risk entirely, and most LG OLED repairs (T-Con, main board, software) can be completed in your home in a single visit.
We offer a free, no-obligation quotation on every LG repair. We never start work without your written approval. We have no hidden fees. We operate a no-fix-no-fee policy on minor faults — if your TV is unrepairable, you don't pay (a small diagnostic fee may apply on complex board cases). Every LG repair carries a 90-day warranty on both workmanship and parts. If another shop has quoted you an alarming amount for an LG OLED panel replacement, please get a second opinion from us first — many such "panel" diagnoses turn out to be much cheaper T-Con or ribbon-cable issues.
Our LG specialist team services the entire Gauteng province. You can read about our coverage in detail on our area pages: Johannesburg TV repair, Sandton TV repair, Pretoria TV repair, Midrand TV repair, Randburg TV repair and Soweto TV repair. If your suburb isn't listed, give us a call — we cover the entire province.
Although LG OLED is one of our specialist categories, our technicians are equally fluent on every other major television brand. Take a look at our specialist pages for Samsung TV repair, Sony TV repair (Sony BRAVIA OLEDs use the same LG WRGB panels we know well), Hisense TV repair, TCL TV repair, Skyworth TV repair and Panasonic TV repair. For a general overview of common TV faults regardless of brand, see our common TV problems guide.
If your LG TV is showing any of the symptoms we've described — won't turn on, OLED with vertical lines, NanoCell going dim, webOS stuck on the logo, HDMI dead, sound dropouts, Magic Remote unpaired or anything else — please don't wait. Most LG faults get worse the longer they're left, and what could have been a straightforward T-Con swap or capacitor rebuild today can grow into a more complex problem tomorrow. To book an LG TV repair anywhere in Gauteng, call or WhatsApp us on 078 721 3551. Send a few photos or a short video of the fault on WhatsApp and we'll often be able to give you a likely cost before you even bring the TV in. From a C2 OLED in Bryanston to a NanoCell 65 in Centurion, we'll have your LG running beautifully again — quickly, professionally and at a fair price.
Please note that all prices displayed are estimated starting prices only. Final repair costs may vary depending on the TV size, model, fault diagnosis, parts required, labour, and any additional repairs needed after inspection.