Won't power on, liquid damage, screen distortion, won't charge — we do circuit-level diagnosis first and replace components rather than swapping the whole board. The repair is photographed and documented, stress-tested before handover, with a 90-day warranty.
on-site diagnosis
repair, not swap
repair photos
all Shanghai
From circuit-level diagnosis to component replacement and BGA rework, solving the problem at the component level
Circuit-level diagnosis pinpoints the fault to a specific circuit; we replace components rather than swapping the whole board, usually far cheaper than replacement.
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Screen distortion, black screens and no-power from dry GPU or bridge-chip joints are reballed on a rework station, with cooling improved at the same time.
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The sooner after a spill, the better. We strip, clean corrosion, replace damaged components, and save the board and drive data where possible.
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No power when plugged in, battery not charging, loose power jack — we trace the power and charging circuits and replace failed components.
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No response to the power button, stuck at logo or rebooting — we check the EC and boot circuit, reflash firmware or replace the chip if needed.
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Photos before and after, an honest list of replaced parts on the invoice, and stress testing before handover.
Book nowWe diagnose step by step on site, locate the real fault, then quote
Test standby power, boot circuit and EC, locate the exact component before touching anything.
Check the power jack, charging chip and battery-detection circuit.
Check GPU core, video memory and cable; BGA rework if needed.
Strip and clean corrosion, replace damaged components, preserve data where possible.
Circuit-level diagnosis to find the short, avoid further damage from more power.
Check BIOS, EC and bridge chip; reflash firmware if needed.
We do an independent diagnosis first — component repair if possible, board replacement only if genuinely necessary.
Test the battery, charge/discharge circuit and detection circuit.
Usually dry joints or aging components; redo soldering and run long stress tests.
On-site diagnosis is free; the final price follows the itemized quote after diagnosis, and you confirm before we repair
| Item | Price range | Notes |
|---|---|---|
| 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 |
| Charging / standby circuit repair | RMB 300–800 | Includes power jack and charging chip |
| EC / BIOS repair | RMB 200–500 | Firmware reflash or chip replacement |
| Board replacement (when truly unrepairable) | RMB 800–2500 | By model, old board may be credited |
| Data rescue | RMB 500–2000 | Success rate assessed first, cost confirmed before recovery |
| Reassembly & stress test | Included | Assembly, drivers and aging test before handover |
Six steps from the first call to acceptance and payment
Tell us the model, symptoms and any liquid exposure; we call back within 30 minutes
Circuit-level checks on site to locate the exact fault point
Component repair quoted where possible; board replacement explained clearly if needed
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
From office towers, parks and chain stores to homes — bookable across the city
The laptop wouldn't power on; we traced a blown power module and replaced it at component level, keeping all trading and client data intact.
Coffee spilled, so it was powered off and brought in immediately; we cleaned the corrosion and replaced damaged components with zero project-data loss.
The previous shop quoted a full board; a second diagnosis found a single failed component in the boot circuit, repaired at less than a third of the board cost.
The external display was fine, pointing to a dry GPU joint; BGA reball and cooling improvement, stress-tested before handover.
Plugged in but wouldn't charge and battery not detected; we repaired the charging chip and power jack, restoring the production device the same day.
Diagnosed as firmware anomalies plus aging components; reflashed the BIOS and replaced parts with all teaching materials intact.
What you most want to know about on-site Laptop Motherboard Chip-Level Repair
No response to the power button, liquid damage, black/distorted screen, won't charge, short circuits — these may all need it. Free on-site diagnosis locates the fault, then we tell you whether to repair components or replace the board.
Most component-level repairs are quoted far below board replacement. If it's genuinely unrepairable, we'll say so clearly and let you decide whether to replace or go another route.
Repair warranty is 90 days. Before handover we run power aging and stress tests, photograph before and after, and list replaced parts honestly on the invoice.
The sooner the better. Power off and don't keep powering it on; after stripping and de-corrosion most can be saved. Even with heavy board damage, drive data can usually be recovered separately.
On-site fixes are done immediately; rework-station jobs usually take 1–3 working days, and we give an estimate when we take it on.
Yes. Judgment and diagnostic depth differ. An independent diagnosis costs nothing extra: component repair if possible, board replacement only if genuinely necessary.
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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