Display Discolouration Repair
Is your image suffering from yellow stains, purple patches, or flickering colours? From burnt LCD polarizers to failing DLP colour wheels, our engineers specialise in restoring accurate, vibrant colour to all projection technologies.
LCD Burn-in Symptoms
- • Yellow or brown central stain
- • Purple or pink border lines
- • Visible heavily on white backgrounds
DLP Colour Wheel Faults
- • Rapidly flickering/flashing colours
- • High-pitched whining or buzzing
- • Image drops to black and white
Understanding Colour Degradation
Discolouration is not a software glitch; it is a physical, hardware-level failure within the projector's optical engine. Because modern projectors utilise different display technologies, the root cause varies depending on the type of machine you own.
How Different Technologies Fail:
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LCDBurnt Polarizers Brands like Epson use three LCD panels (Red, Green, Blue). The blue polarizer absorbs the most UV and thermal energy. Over time, it literally scorches, resulting in a permanent yellow/brown stain in the centre of your image.
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DLPColour Wheel Failure Brands like Optoma and BenQ use a spinning glass wheel of colours. When the motor bearing wears out, or dust obscures the optical timing sensor, the wheel falls out of sync with the mainboard, causing severe flickering and incorrect colours.
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SXRDPanel Degradation High-end home cinema units (Sony, JVC) can suffer from panel degradation caused by humidity and heat. This manifests as a massive drop in native contrast (milky blacks) or widespread green/blue tinting.
Regardless of the technology, ignoring discolouration will lead to further thermal damage. A burnt polarizer left untreated can eventually melt onto the LCD panel itself, drastically increasing repair costs.
Precision Optical Repair
Repairing the optical block requires a clean-room environment and micro-calibrations. Our technicians are trained to identify and resolve specific colour failures at the component level.
Our Engineering Standard:
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Polarizer Replacement (LCD) We carefully extract the scorched polarizer filter from the prism assembly and solder in a brand new, highly thermal-resistant optical plate, perfectly realigning it for optimal convergence.
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Colour Wheel Syncing (DLP) We install brand new, precisely balanced colour wheel assemblies and calibrate the optical timing sensor to ensure the spin rate matches the motherboard's video processing logic perfectly.
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Thermal Safeguarding Colour degradation is caused by heat. Every repair includes a deep ultrasonic clean of the airways and testing of the exhaust fans to ensure your new optics don't suffer the same fate.
The Progression of Optical Burn-in (LCD)
LCD polarizers degrade over time. If you catch the signs early, repair is straightforward. Left too long, the intense heat will permanently fuse the damaged filter to the expensive LCD panel.
Faint Tinting
A very faint, semi-transparent yellow or pink hue appears in the centre or edges of the image. Only really noticeable on pure white backgrounds (like Word documents).
Visible Scorching
The tint turns into a highly visible, dark yellow or brown stain that impacts all colours projected through it. Contrast is significantly reduced in the centre.
Optical Melting
The polarizer has completely burnt out. The heat may have now transferred to the delicate LCD glass panel, necessitating a full optical assembly replacement.
90-Day Warranty
All optical replacements are guaranteed
Component Level
We fix the prism, not just swap the engine
London Collection
Safe optical transport from your address
Restore Your Vibrant Colours.
Stop watching your favourite films with a yellow tint. Let our expert technicians diagnose your optical block and replace your burnt polarizers today.