TV Lines & Flickering Repair in KL & Selangor
Vertical lines, horizontal bands, or a screen that flickers? Run the TV's built-in Picture Test first — if lines still appear in the test, the fault is inside the TV. Cable, T-Con, or panel — we confirm which at our Petaling Jaya workshop with a written quote before any repair.
Different Line & Flicker Symptoms — Different Likely Causes
Not every line fault comes from the same part. Match your symptom below before trying fixes — the pattern already narrows down the fault.
Vertical or horizontal lines
May involve the display panel, a driver circuit, a loose connection, the signal source, or a board inside the TV. A proper diagnosis narrows it down.
Lines only on one input
If lines disappear on the TV menu or another HDMI port, the fault may be the cable, input source, or the connected device — not the TV itself.
Whole screen flickers or blinks
May point to picture settings, a signal issue, the backlight, or power/control circuitry. Run the Picture Test first to narrow it down.
Half-screen image or coloured patches
Often an internal display fault. A technician should inspect before you spend money on parts — some are repairable, others not economical.
These are initial clues, not final diagnoses. We confirm the exact cause at the workshop before quoting.
4 Safe Checks Before You Call
Five minutes, no tools. Each one rules out a specific cause — the same steps Samsung and LG recommend first.
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Run the TV's built-in Picture Test
Samsung: Settings → Support → Device Care → Self Diagnosis → Picture Test. LG: Settings → Support → Screen Self-Diagnosis → Picture Test. If lines appear in the test, the TV needs service. If the test is clean, check your cables and input source.
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Check the input source and cable
If lines appear only on one HDMI input, try a different cable and a different device. A damaged HDMI cable or faulty set-top box can produce lines or flicker.
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Reset picture settings
A corrupted picture setting can sometimes look like panel damage. Reset to factory defaults and check again. Rules out a software glitch but doesn't fix physical panel lines.
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Cold reboot for 60 seconds
Unplug from the wall for a full minute, then plug back in. Clears temporary signal glitches. Do not keep switching it on if you notice a burning smell or unusual noise.
Please do not press or push on the screen
Samsung and LG both warn that direct pressure can damage the panel. The checks above are safe. Do not open the back cover — power boards hold a dangerous charge even after unplugging.
What Causes Lines and Flickering on a TV Screen
Most line faults come down to one of these areas. The challenge is telling them apart — a cable fix is cheap, a board repair is moderate, and panel damage is often not worth repairing.
Ribbon cable or connection fault
The flat cables connecting main board, T-Con, and panel can come loose or oxidise. A technician can check whether reseating or cleaning the connection helps.
T-Con board fault
The timing control board sends the image signal to the panel. Where the TV has a separate T-Con, it may be repairable or replaceable. Note: some LG models integrate T-Con into the panel — those may need panel-level repair instead.
Panel or display-related fault
Cracked or internally failed LCD panel. Panel faults can sometimes be repaired via COF/tab-bond work, but the result isn't always lasting — and replacement usually costs a significant share of a new TV.
Power supply or mainboard (less common)
Unstable voltage from the power board can make the screen flicker. A mainboard fault can also produce bands or ghosting. Both need board-level testing to confirm.
Symptom → Possible Cause → Next Step
| What you see | Possible cause | Next diagnostic step |
|---|---|---|
| Vertical lines, one or many | Panel/driver, ribbon cable, T-Con, or signal path | Picture Test; check input source; workshop diagnosis |
| Horizontal lines or bands | Panel row driver, tab bond, or other display fault | Picture Test; workshop diagnosis |
| Lines only on one input | HDMI cable, input source, or connected device | Swap cable; try another device |
| Whole screen flickers or blinks | Picture settings, signal, backlight, or power/control circuitry | Picture Test; reset picture settings; workshop diagnosis |
| Coloured patches or half-screen image | Panel or driver-related fault | Workshop diagnosis first |
This table is a guide, not a diagnosis. The same symptom can come from more than one part. We confirm the exact cause at the workshop before quoting.
How We Diagnose a Line or Flicker Fault
Same sequence on every TV — nothing is missed, nothing is guessed.
External check
Picture Test, cables, inputs, picture reset, cold reboot — rules out the free fixes first.
Signal & source check
We compare inputs and test with a known-good cable and source to rule out external faults.
Board & connection check
We inspect ribbon cables for poor seating or oxidation and measure T-Con voltages where applicable.
Repair & test
We repair or replace the confirmed fault, test the picture, explain the 1-month warranty in writing.
TV Line & Flicker Repair Cost in Malaysia
Most line and flicker repairs land between RM 100 and RM 440+, depending on the fault type. A ribbon cable reseat sits at the lower end; a T-Con repair sits in the middle. Panel damage is usually not economical — and we tell you before you spend anything.
| Repair | Typical range | Notes |
|---|---|---|
| Diagnosis / inspection | RM 50–80 | Adjusted against final repair bill if you proceed. |
| Ribbon cable reseat / clean | RM 100–200 | If the cable is the confirmed cause. |
| T-Con board repair / replace | RM 150–440+ | Repair or replacement, model dependent. |
| Power board repair | RM 180–380+ | If flicker traces to unstable supply voltage. |
| Mainboard repair | RM 199–580+ | If bands or ghosting trace to the mainboard. |
| Panel damage / COF bond | Usually not economical | Significant share of a new TV. |
Cable and T-Con repairs almost always fall well under half the price of a similar new TV — those are the economical cases. Panel-line faults are different: COF/tab-bond work sometimes helps but rarely lasts, and panel replacement usually doesn't make sense. The Picture Test already tells you which group you're likely in — the workshop confirms the cost.
Estimates only — exact charges confirmed after diagnosis. Turnaround: 1–2 days if part in stock, 3–5 days if ordered.
TV Lines & Flickering — Your Questions
Direct answers. If your question is not here, WhatsApp us with the TV model and a photo of the screen.
Are vertical lines on a TV always panel damage?
No. Vertical lines can have several causes — a panel or driver fault, a connection issue, or a problem elsewhere in the display circuitry. A proper diagnosis distinguishes them. The TV's built-in Picture Test is a safe first step.
What is the TV's built-in Picture Test, and how do I run it?
Most Samsung and LG TVs have a self-diagnosis feature. On Samsung: Settings → Support → Device Care → Self Diagnosis → Picture Test. On LG: Settings → Support → Screen Self-Diagnosis → Picture Test. If lines appear in the test image, the TV needs service. If the test is clean, check your HDMI cable and input source.
Can a flickering TV be fixed without replacing the screen?
Often yes. Flickering can come from a failing T-Con gamma IC, unstable power supply voltage, or a loose cable — all board-level or cable fixes, not screen replacement. We confirm the cause with voltage testing before quoting.
How much does a line or flicker repair cost in Malaysia?
Most repairs cost RM 100–440+. A simple cable fix sits at the lower end; a T-Con repair sits in the middle; a power board or mainboard replacement sits higher. Diagnosis is RM 50–80, adjusted against the repair bill if you proceed.
How long does the repair take?
Typically 1–2 working days if the part is in stock. If a model-specific T-Con board must be ordered, allow 3–5 working days. We update you on WhatsApp if the timeline changes.
Will the Picture Test always tell me if it's panel damage?
No — the Picture Test only tells us whether the TV's internal image-processing path is working. It cannot distinguish a T-Con fault from a panel fault, and it can't confirm a tab-bond issue. A clean test means the fault is likely external (cable, source); a failed test means internal — but which internal part still needs workshop testing.
What if the diagnosis shows panel damage — do you still charge?
Yes — the diagnosis fee (RM 50–80) applies because the inspection was completed, and it is not waived if you decide not to proceed with a repair. We tell you this before booking. If the diagnosis shows panel damage and the TV is not economical to repair, we explain that honestly rather than pushing a repair.
What warranty do you provide on a line or flicker repair?
1-month warranty on the specific parts we supply. Excludes new physical damage, liquid damage, power surges, or unrelated faults. Full warranty terms.
Where We Repair TV Line & Flicker Faults in KL & Selangor
Line faults need a Picture Test followed by board-level voltage testing — workshop diagnosis is the only way to separate cable, T-Con, and panel. Drop off at Petaling Jaya, or we collect across the Klang Valley.
TV Line & Flicker Repair in KL
Condo pickup & workshop drop-off across KL
TV Line & Flicker Repair in Selangor
Drop-off at Petaling Jaya or pickup across districts
Fastest for drop-off: Petaling Jaya, Subang Jaya, Bandar Sunway, Puchong, Shah Alam, Klang, Seri Kembangan. Wider pickup: Kajang, Bangi, Cyberjaya, KL City Centre, Cheras, Ampang, Kepong, Setapak, Rawang. Not sure if we reach you? Confirm your postcode on WhatsApp.
Still Seeing Lines or Flicker? Send Us Your TV Details
Tell us the brand, model, size, and what the lines look like. We explain the likely cause and price range before you decide.