If your Dell Precision 3550 has a broken screen, will not charge, runs hot or will not start, we can diagnose and repair it at our Bermondsey workshop. It is a 15.6-inch mobile workstation from 2020. Both the drive and, on most configurations, the memory can be upgraded, which makes it a good candidate for a refresh.
- Model number
- 3550
- Released
- 2020
- Type
- Mobile workstation
- Screen
- 15.6-inch
- Storage
- M.2 SSD, two slots on most configurations
- Memory
- SODIMM slots
What we repair on the Dell Precision 3550
Screen replacement
A broken 15.6-inch screen is replaced with a panel of the same resolution and finish. We check the display cable while the lid is open.
Price confirmed before work starts
Battery replacement
A new internal battery is fitted and tested through a full charge and discharge. A battery of this age that swells should be replaced before it damages the trackpad or casing.
Price confirmed before work starts
Charging port and power repair
Depending on the configuration this charges through a round socket, USB-C or both. We test the adapter, the port and the charging circuit to find which has failed.
Overheating and fan repair
We strip the cooling system, clean the fans and heatsink fins and renew the thermal compound and pads. We check temperatures under load afterwards.
SSD and storage upgrade
Most configurations of the Dell Precision 3550 have two M.2 slots, so a second SSD can be added, or the existing one cloned to a larger drive.
Price confirmed before work starts
Memory upgrade
Most configurations of the Dell Precision 3550 have SODIMM memory slots, so memory can be increased. We check what is fitted and the maximum the board supports.
Graphics repair
The graphics chip is soldered to the board. Artefacts, crashes under load and a black screen with the fans running are diagnosed to the chip, its memory or its power stage, and repaired at board level where it is economical.
Windows repair and reinstall
The Dell Precision 3550 meets Microsoft’s Windows 11 requirements in most configurations. We upgrade from Windows 10, which reached end of support in October 2025, or reinstall Windows 11 cleanly with your files kept.
We also carry out keyboard and trackpad repair, motherboard repair, liquid damage repair, hinge and casing repair, virus removal on the Dell Precision 3550, along with USB, HDMI and audio port repair, Wi-Fi and Bluetooth card replacement, webcam and speaker faults, BIOS password removal with proof of ownership and data transfer to a new machine.
What we see on the bench
- Mobile workstations run hot for long periods, so dried thermal compound and dust-clogged fans are behind many of the shutdowns and slowdowns we see.
- Many configurations have two or more drives, sometimes in RAID. Tell us if yours does before any storage work, because it changes how data is recovered.
- Graphics faults on these are board-level repairs: the professional graphics chip is soldered to the motherboard.
Data recovery from the Dell Precision 3550
The SSD in the Dell Precision 3550 can be removed and imaged on our own equipment, so files can usually be recovered even when the machine will not start. Recent Windows machines often have device encryption or BitLocker switched on. If so we will need the recovery key, which is normally saved in your Microsoft account.
Estimate the cost with our data recovery calculator, or read about recovering files after a ransomware attack.
Where the Dell Precision 3550 sits in the range
Its nearest relatives in the Dell Precision mobile workstation range are the older Dell Precision 3540 (2019) and the newer Dell Precision 3560 (2021).
Questions
Can the SSD or memory in the Dell Precision 3550 be upgraded?
The SSD can be replaced, and most configurations have a second M.2 slot. Memory is in slots on most configurations and can be increased.
My Dell Precision 3550 will not turn on. Is my data lost?
Usually not. The drive is separate from the fault in most cases, and we can remove it and copy your files even if the machine itself is not worth repairing.
How do I get my Dell Precision 3550 to you?
Bring it to our workshop at Unit 1 The Willows, 80 Willow Walk, London SE1 5SY, or call 020 7237 6805 to ask about courier collection. We confirm the price before any work starts.
Why does my Dell Precision 3550 overheat or slow down in games?
Usually dust in the heatsinks and thermal compound that has dried out. A thermal service fixes it in most cases. If temperatures are normal and it still slows down, we test the graphics chip and power delivery.