on-site diagnosis
repair warranty
bookable
fastest arrival
Diagnose first, quote after, and only start once you approve

Component-level repair instead of board replacement, stress-tested before handover.
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Install and activate a genuine OS, load all drivers in one pass, and configure office and common software to your habits.
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Measure signal strength and interference point by point, map the dead zones, and deliver a plan and quote before any work.
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Step-by-step diagnosis of power, motherboard, GPU and cooling, with on-site replacement of PSU, motherboard and thermal parts.
Book nowFirst locate the real fault, then quote
Scan surrounding channels, avoid congested bands, plan 2.4G and 5G separately.
Survey by area, workstations and walls, deliver a point map and budget.
Split the guest network, isolate and rate-limit it, and put office devices on a separate subnet.
Unify SSID and password policy, quick password changes on staff turnover.
We determine the position and test the result on site — cheaper than trial-and-error buying.
Step-by-step checks of power supply, motherboard power, RAM seating and boot circuit.
On-site diagnosis is free; the final price follows the itemized quote after diagnosis, and you confirm before we repair
| Item | Price range | Notes |
|---|---|---|
| GPU repair / replacement | RMB 200–800 | Depends on model |
| Drive replacement + migration | RMB 200–600 | Includes system and data migration |
| Data recovery | RMB 500–2000 | Success rate assessed first, cost confirmed before recovery |
| On-site diagnosis | Free | No charge if not repaired, fault point explained |
| Motherboard chip-level repair | RMB 300–800 | Component-level repair of power, boot and port circuits |
| BGA reball / rework | RMB 400–1200 | GPU core and bridge-chip dry joints |
| Liquid corrosion treatment | RMB 300–600 | Strip, clean, de-corrode and replace components |
From the first call to acceptance and payment, in a few steps
Common parts carried in the van; rework-station jobs taken back with photo documentation
Power aging and stress tests to confirm stability before handover
Pay only when satisfied; 90-day repair warranty
Tell us the brand, age and where it gets stuck; we call back within 30 minutes
Check whether hardware is the issue and whether to repair or reinstall; diagnosis free
Business, store and home clients alike, with a technician arranged nearby

The client moved into a new office in West Bund, with devices and cabling to re-organize. We tested and numbered each device and delivered an equipment list at handover.

The same problem had been handled twice elsewhere without a fix. We re-diagnosed to find the real cause, and after repair it stayed stable for a week of observation.

The client needed to operate normally during the day, so we came after hours. Several staff worked in parallel and finished testing and cleanup before closing.

A software companies client working in Xujiahui had devices failing and holding up progress. We visited by appointment and handled them in groups, restoring normal use the same day and logging the devices into a table.

A hospital departments client in West Bund had a device go down suddenly. We judged the fault direction by phone, and our technician brought matching parts and completed repair and testing the same day.

The client used to call only when something broke, and faults kept recurring. After asset records and scheduled inspections, the number of service calls dropped noticeably.
What you most want to know about on-site service in Xuhui
Most faults can be fixed on-site — our technician brings tools and common parts. If specialist equipment is needed, we'll explain and agree on a time.
On-site diagnosis is free. We give you a quote after diagnosis and only start once you confirm; if it can't be fixed for technical reasons, there's no charge.
Dust cleaning is generally RMB 80–150, including internal cleaning, fan cleaning and thermal paste. Recommended yearly, ideally before summer.
Most of the time, yes. Adding RAM or an SSD is the cheapest speed boost — install is usually RMB 50–100, parts can be sourced or brought by you, and done on the spot.
For anything involving storage, we back up or image it first. For recovery, we assess the success rate and confirm the cost before starting.
As fast as 30 minutes if close and traffic is light; most jobs scheduled the same day.
Describe the device and the symptoms; our technician brings the right tools and common parts. Diagnose first, quote after, and repair only once you approve.
WeChat ID: 17887942669
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On-site across all 13 subdistricts of Xuhui