Promethean Projector
Repair Centre
Keep your ActivBoard running. We provide specialist repair for the entire PRM, UST, and EST range. Trusted by 500+ UK schools for fast, compliant service with Purchase Order acceptance.
The Hardest Working Tech in School
Promethean projectors are the workhorses of the UK education system. Mounted on ceiling booms, they are exposed to rising heat and chalk dust for 6-8 hours a day. This unique environment leads to specific failure modes that generic repair shops often miss.
DLP Failure (PRM-45): The PRM-45 uses a DLP chip. When the cooling fans become clogged with dust, the chip overheats, causing micro-mirrors to seize. This results in a "Starry Night" effect of white or black dots. We replace the chip and upgrade the thermal interface material.
LCD Degradation (PRM-30/35): These older models use LCD panels. Over time, the organic polarisers burn, creating a yellow or purple sludge-like stain on the image. We rebuild the optical engine with new polarising filters to restore crisp whites.
No Power / Clicking: If your unit clicks but won't start, the Ballast Unit or Power Supply (PSU) has likely failed due to thermal stress. We perform component-level board repairs to bring dead units back to life.
DMD Repair
Fixing "White Dots" on PRM-45 & UST-P1 DLP models.
LCD Optics
Replacing burnt polarisers on PRM-30/35 to fix yellow stains.
Cooling
Replacing noisy or seized fans to prevent thermal shutdown.
Power Logic
Repairing "Dead" units that click but fail to strike the lamp.
Promethean Error Code Database
Promethean projectors use the Power and Menu LEDs to signal faults. Use this matrix to identify your issue.
| LED Status | Indicated Fault | Engineer's Note |
|---|---|---|
| Solid Red (Power) | Lamp / Ballast Failure | The unit cannot ignite the lamp. Usually a blown bulb, but if a new bulb fails, the Ballast unit (HV ignition) has failed. |
|
Flashing Red (2 Blinks)
|
Overheating (Chassis) | The internal temperature is too high. The projector shuts down to save the mainboard. Check filters. If filters are clean, an intake fan is dead. |
|
Flashing Red (4 Blinks)
|
Fan Failure | A specific fan (usually the blower) is not spinning or the tachometer wire is broken. The unit will not start until the fan is replaced. |
| Solid Amber | System Standby / Lock | Normal standby mode. If the unit refuses to wake up from Amber, the mainboard logic has frozen or the power supply capacitors are failing. |
| Loud Whining Noise | Colour Wheel Bearing | Specific to DLP models (PRM-32/35/45). The colour wheel bearing is dry. Needs immediate replacement before the wheel shatters. |
Supported Promethean Families
PRM-20 / 30 / 35
LCD Technology
The classic grey boom projectors. We fix yellow discoloration (polarizers) and lamp ignition failures.
- • PRM-30 (Orange Logo)
- • PRM-35 (Grey Logo)
- • PRM-25
PRM-45
DLP Technology
The newer black/grey unit. Prone to white dots (DMD failure) and colour wheel noise. We stock all parts.
- • PRM-45
- • PRM-45A
- • PRM-32
UST / EST Series
Ultra Short Throw
Wall-mounted units. We repair power issues and clean the complex mirror systems to restore brightness.
- • UST-P1
- • EST-P1
- • SSI Series
Restore Your Classroom Tech
Don't let a faulty projector disrupt lessons. We offer fast, compliant repair services for schools and colleges across the UK.
School POs Accepted | 90-Day Warranty | DBS Checked Staff