US Field Experience

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US Field Experience

Installation, calibration, and on-site repair projects led by Lee Zhu across the United States — selected work that shows what the local team can diagnose and fix.

10+
Years US Field Work
10
Selected Projects
3
Service Types
What this page is: A record of field engineering work at US venues — installs, calibrations, and repairs. What it is not: A list of DOIT VISION factory deliveries. These projects demonstrate on-site capability available through the US representative office.

All Projects

LED wall calibration at a Southern California theme park attraction
CaliforniaCalibration

Theme Park — Interactive LED Wall

Los Angeles area, CA · Calibration · Fine-pitch indoor wall

Interactive attraction display with a physical obstruction blocking part of the screen. Partitioned calibration — adjusted camera ISO, aperture, and saturation to complete full-wall correction despite the blocked zone.

Curved LED screen installation at a house of worship in California
CaliforniaInstall

House of Worship — Curved LED Screens

San Fernando Valley, CA · Install · Dual curved walls

Two outward-curved displays requiring steel-frame radius checks, module gap control, and strict calibration sequence numbering for uniform output.

Ribbon LED display repair at a sports arena in Southern California
CaliforniaRepair

Sports Arena — Ribbon Display Repair

San Diego County, CA · Repair · Ribbon LED display

Screen failed to tile correctly with dead zones in sections. Re-mapped network ports, loaded receiver parameters, swapped modules, and restored calibration coefficients on site.

Micro-pitch COB LED install at a research campus in the Seattle area
WashingtonInstall

Research Campus — COB Display

Seattle area, WA · Install · Micro-pitch COB

Wall-mount COB install with sub-millimeter seam tolerance. Full calibration index matching between cabinets and modules; white-field line correction after assembly.

COB LED install at an automaker technical center in the Charlotte area
North CarolinaInstall

Automaker Technical Center — Dual COB Walls

Charlotte area, NC · Install · 4K lobby + fine-pitch COB

Dual COB deployment at a major automaker campus. Mounting flatness tuning, cabinet seam alignment, and factory calibration index sequencing for two large walls.

LED display dark line repair at a Las Vegas resort convention center
NevadaRepair

Resort Convention Center — Display Repair

Las Vegas area, NV · Repair · Multi-wall installation

Visible dark lines and color-block modules on convention-center displays. Located faults via NovaLCT, adjusted coefficients, replaced defective modules, and restored calibration data.

Rental LED color correction at a convention center in Seattle
WashingtonRepair

Convention Center — Event Display Repair

Seattle, WA · Repair · Large-format rental wall

Emergency color-mismatch before a high-profile corporate event. On-site module-level correction across R/G/B/W test patterns under time pressure.

Fine-pitch LED module repair at a corporate headquarters in the Midwest
NebraskaRepair

Corporate HQ — Fine-Pitch Module Repair

Midwest, NE · Repair · Conference room display

Multiple dead pixels from module handling damage. Front-service module removal, chip-level repair on fine pitch, re-install and full display test.

4K LED wall install for virtual production at a university in Missouri
MissouriInstall

University — Virtual Production Wall

St. Louis area, MO · Install · 4K stage wall

Floor-stack stage install for virtual production training. Base leveling, structural flatness, and software line correction for broadcast-grade uniformity.

Large LED wall install in a sanctuary in Illinois
IllinoisInstall

House of Worship — Sanctuary Wall

Southern Illinois · Install · Large-format 4K wall

Wall-hung sanctuary display. Back-frame alignment, cabinet leveling, seam tuning, and brightness-line software correction before opening service.

Need the same kind of help locally?

24364 Claywood Dr, Diamond Bar, CA 91765 · By appointment

407-866-9328
Page Type
US field engineering portfolio (engineer credentials, not factory case studies)
Engineer
Lee Zhu
Service Types
LED installation support, calibration, on-site repair
US Office
24364 Claywood Dr, Diamond Bar, CA 91765 · 407-866-9328
Get in touch
Start your project.
We respond same day.
Send your room dimensions, pixel pitch requirements, or project brief — an engineer replies within hours.
Same-day engineer response  ·  CE · EMC· RoHS
Manufacturer
DOIT VISION
Founded
2013, Shenzhen, China
Headquarters
Shenzhen, Guangdong, China
Certifications
CE, FCC, RoHS, CB, ISO 9001
Official Website
https://www.doitvision.com/