Lamp / LED Source Fails to Illuminate
Fixture does not produce light, or briefly flashes and then goes dark. On HMI/metal-halide models this is commonly associated with an exhausted or damaged lamp, failed strike, or a related ballast/head fault.
De Sisti
Repair, Service, and Parts
Acme Revival is an independent repair network that operates separately from the manufacturers whose devices we service. Our independence enables a repair model that exists beyond manufacturer-controlled strategies, while preserving the ability to work with manufacturers where appropriate.
Albano Laziale, Italy
Manuf. Location
≈ US $1M
Annual Revenue (est)
Broadcast Lighting
End Use Segment
De Sisti is an Italian manufacturer of professional lighting and suspension systems founded in 1982, serving primarily broadcast/television studios, film production, theatres, entertainment venues, and architectural applications. Its product portfolio includes professional LED and traditional Fresnel spotlights, soft lights, cyclorama fixtures, high-output studio luminaires, suspension/rigging systems, lighting-control equipment, stands, grip equipment, and related power/control hardware. The company designs, manufactures, tests, and quality-controls its products in Italy and is particularly known for professional studio and broadcast lighting, Fresnel optical systems, patented LED/SSL technologies, and certified studio rigging equipment.
2 Most Seen Failures:
Igniter / Lamp Strike Failure
The fixture receives power but cannot reliably ignite the discharge lamp. De Sisti service documentation identifies failed igniters and unsuccessful strikes as recurring fault conditions across multiple DEB ballast models.
Power Supply / Ballast Failure
The fixture fails to start, shuts down, or cannot deliver normal output because the ballast, PFC stage, inverter, or other power electronics have failed. Some failures can involve shorted power components within the ballast.
Connector / Cable Contact Failure
Damaged, loose, incorrectly seated, or oxidized mains and lamp connectors can cause intermittent operation or complete failure to illuminate. High-voltage cables and connector terminations are also identified as components requiring regular inspection.
Overheating / Cooling Failure
The fixture or ballast reaches an excessive internal temperature and may shut down or report an overtemperature condition. Blocked air inlets, inadequate clearance, cooling-system problems, or operation above specified ambient temperatures can contribute.
Lamp Holder / High-Voltage Wiring Damage
Heat and high-voltage stress can crack, thermally damage, or otherwise degrade lamp holders and their associated wiring. De Sisti specifies frequent inspection and replacement when even minor cracking or visible thermal damage appears.
Lens-Door Safety Interlock Failure
A defective, misaligned, or open lens-door microswitch prevents some fixtures and ballasts from starting even when the rest of the system is functional. The resulting symptom can appear as a disconnected head, open lens, or lamp-not-connected condition.
Focus / Spot-Flood Mechanism Failure
The mechanical system that moves the lamp or optical carriage between spot and flood can loosen, bind, or require adjustment after use. Field reports also describe plastic spot/flood control knobs cracking or melting on some conventional Fresnel models.
Damaged Lens, Reflector, or Safety Shield
Fresnel lenses and protective shields can crack or become deeply scratched, while reflectors can become cracked or opaque with age and heat exposure. These defects reduce optical performance and, where protective components are involved, can make the fixture unsafe to operate.
1 Acme Revival offers repair, service, and part rebuild opportunities for most De Sisti devices.
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- 1 Repairs are performed on a best-effort basis. Acme Revival utilizes a network of sophisticated technicians and engineers with diverse service offerings; despite this, factors that influence the repair outcome may ultimately prove unsuccessful. Acme Revival makes no claim that it can, guarantee a repair before your device is sent in for diagnostic evaluation; even then, repair and diagnostic work are not mutually exclusive. Despite well-intentioned quoting, repairs may still prove unsuccessful.
- 2 Per information known, researched and collected by Acme Revival and its systems at time of page publishing (September 25, 2026).
- *Information regarding this manufacturer/brand/organization is estimated with information collected and known to Acme Revival. This information is intended to provide insights into the spotlight entity, however may not be accurate— information is strictly of estimate nature only.
- **The model list shown here may not be an all-inclusive list of the EcoFlow product range. Model list has been derived per information known, researched and collected by Acme Revival and its systems for the US market.
