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Grant Harkness, founder and lead technician at Hark Tech
Grant Harkness · Basingstoke, UK
Meet the bench

Hi, I’m Grant.
I fix things properly.

Hark Tech is a one-person workshop in Basingstoke. I print your files on demand, repair the kit most shops won’t touch, run every job on my own machines, and post it back to you myself. No call-centre, no outsourced “fulfilment”, no being passed between technicians.

Many years of self-taught hands-on hardware work — consumer electronics, 3D printers, embedded Linux, low-level firmware, and component-level board repair. The kind of work most shops won’t touch because it doesn’t scale.

5.0
Google rating from verified customers
90‑day
Warranty on every repair
1 to 1
Same person prints, repairs and returns your kit
UK
Mail-in service from Basingstoke

The workshop, right now

This isn’t a storefront — it’s a working bench. These numbers come straight off the workshop’s own systems, live.

Meet the machines

Every print-on-demand job comes off one of these — enclosed, maintained, and dialled in by the same person who repairs printers for a living.

Creality K2 3D printer on the workshop bench

Creality K2 The workhorse

High-speed enclosed CoreXY that runs the bulk of the queue. It’s also the printer whose firmware I patch and document for the wider K2 community — so your print is tuned by someone who knows the machine at source-code level.

Enclosed chamber · high-speed · PLA to PC / carbon-fibre

Bambu Lab A1 mid-print

Bambu Lab A1 Fine detail

The go-to for crisp surface finish and smaller, detailed parts — miniatures, display pieces and anything where the finish is the whole point.

Fast · fine detail · multi-colour (AMS)

Bambu Lab P2S 3D printer

Bambu Lab P2S Engineering & colour

Enclosed and built for engineering-grade and multi-material work — tougher materials and full-colour prints when a job needs more than a single spool.

Enclosed · engineering materials · multi-material

The Hark Tech repair and print bench

The bench Repairs

Soldering and hot-air rework, microscope and diagnostic kit — where the console, laptop and board-level repairs happen between print jobs.

Microsoldering · hot-air rework · diagnostics

What I’m up to

Recent and ongoing work — both customer jobs and the infrastructure that keeps this place running.

Sliced 3MF instant pricing shipped

May 2026

Built a custom slicer-aware parser for the print-order tool so customers get firm prices on Bambu Studio / OrcaSlicer sliced files in seconds — most UK competitors still bounce these to manual quote forms.

3D printing · Web · FastAPI

K2 Klipper firmware patches

May 2026

Applied five input-shaper math fixes and bed-level tuning to the workshop’s Creality K2. Patches documented as public help articles so other K2 owners can apply them.

3D printer · Klipper · Open source

Full network + server decommission, Hampshire SMB

April 2026

Decommissioned a local business’s on-prem stack — switches, server hardware, IP phone system, multi-camera Blue Iris setup. Migrated active services to cloud and handed off the SonicWall firewall cleanly.

Networking · SonicWall · Blue Iris · Avaya · Server decom

Self-hosted infrastructure

Ongoing

Hark Tech runs its own Proxmox cluster: Pi-hole HA pair, PBS backups, Cloudflare tunnels, fail2ban-defended nginx. Same architecture I deploy for SMB clients.

Linux · Infrastructure · Proxmox

Console & 3D-print repair backlog

Ongoing

Currently working through PS5 HDMI ports, Xbox Series X disc drives, and Switch Joy-Con drifts alongside the print queue. Recent work has included board-level console repairs and small-batch 3D prints.

Console repair · 3D printing

Need an engineer for a one-off project rather than a managed-services contract? Get in touch.

If it can’t be fixed, I’ll tell you. If it can, I’ll do it properly. Either way, the same person who quotes your repair is the person on the bench — and on the email replying to you.

— Grant

What I’m best at

The bench has seen a lot of different kit over the years. These are the areas where the experience runs deepest.

Inside a Creality K2 print chamber on the bench

3D Printer Repair & Firmware

Klipper configuration, pressure advance and input shaping, mechanical rebuilds, multi-material systems, enclosed printing in engineering materials (ABS, ASA, nylon, carbon-fibre), and rescuing printers stuck on poor or unsupported vendor firmware.

Creality K2 · Bambu Lab · Prusa · Ender

UART debug header wired up to a firmware-locked board

Firmware Recovery & Modding

Bricked devices, bootloader recovery, reverse engineering proprietary firmware, binary patching, and porting open firmware onto hardware the manufacturer locked down.

Reverse engineering · Bootloader unlock · Firmware patching

Close-up of component-level PCB rework on the bench

Component-Level PCB Repair

Surface-mount rework, trace repair, micro-soldering, and fault-finding down to the individual component — not whole-board swaps at the customer’s expense.

SMD rework · HDMI ports · BGA reflow · Microsoldering

Game controller on the repair bench, mid-diagnostic

Consumer Electronics

Laptops, desktops, gaming consoles, monitors and audio gear — with honest advice when a repair genuinely isn’t worth doing. No padding the bill.

Laptops · PS5 / Xbox · MacBooks · Vintage hi-fi

I don’t just claim to know it — I publish it

The fastest way to judge an engineer is to see their work in the open. Here’s mine.

Why you can trust us with your kit

A mail-in service only works if customers genuinely trust the person on the other end of the post. Here's the promise we make to every one of them.

I work from a private residential workshop, so the full postal address is shared by email once your job is booked — you’ll always have it before you ship anything.

Honest diagnostics

If it can't be fixed, or if the repair cost exceeds the value of the item, we'll tell you plainly. No-fix, no-fee — you don't pay for work we couldn't do.

No surprises

You get a written quote before any work starts, and we never extend the scope without your approval. If we find something extra inside, we stop and ask.

Your data stays yours

We access only what's strictly needed to test the repair. Personal files are never opened, and data-sensitive devices can be worked on without booting the OS when you ask.

Guaranteed work

Every repair carries a 90-day warranty. If the same fault comes back in that window, we put it right at no further charge.

Fast, honest turnaround

Most repairs are back in the post within 5–10 working days of arriving at the workshop. Complex jobs take longer — but we'll give you a realistic estimate up front and keep you updated.

One person, start to finish

Your item isn't passed between technicians. The same person answers your email, does the work, tests it and re-packs it for return — so the context is never lost.

Ready to get started?

Send us a few photos and a description — we'll reply within one business day with a no-obligation quote.

Customer reviews

Reviews from real customers, checked against real orders. You can read them on our reviews page or on Google. Had work done? Leave a review — it genuinely helps an independent workshop.

What we repair

The bench takes in computer hardware, consumer electronics, games consoles and 3D printers. Most jobs are board-level: a laptop that will not power on, a console with no display, a printer mainboard that has cooked a MOSFET, a controller that no longer charges. We work across most makes — Dell, HP, Lenovo, Apple, Sony, Microsoft, Nintendo, Bambu Lab, Creality, Prusa and the smaller names too. If it has a circuit board and you have hit a wall with it, send a photo over and we will tell you straight whether it is worth opening up.

Bambu A1 and other printer work

Bambu A1 repairs come in fairly often — toolhead PCBs, hotend cables that have flexed once too many times, AMS Lite swap-overs, mainboard MOSFETs after a heater short. We treat the A1 like any other small electronics job: open it up, scope the failure, fix the actual fault rather than swapping boards until the symptom moves. Same approach for K2, P1S, X1C, Ender, Prusa MK-series and most enclosed CoreXY machines.

What an electronic repair typically costs

Cost depends on what is wrong, not on what the device is. A single failed component is cheap to put right; a board that has been flooded, shorted across several rails, or repaired badly by someone else can take much longer. We quote after diagnosis, in writing, before any chargeable work starts. If a repair is not economic against a replacement, we will say so plainly rather than running up the bill.

How a booking works

There is no phone queue and no front counter. You describe the fault, we confirm whether it is in scope, and you post the device in. Once it arrives we diagnose, send you the quote, and only carry on if you approve it. Turnaround is typically a few working days from arrival once parts are in hand, longer if a specific chip or donor board has to be sourced.

UK mail-in, one workshop

Everything happens at one bench in Basingstoke. Your kit does not get forwarded to a third party, parcelled out to a contractor, or sat in a queue behind a hundred other tickets. One technician opens it, one technician closes it, and the same person answers your messages along the way.

Frequently asked questions

What does an electronic repair cost at Hark Tech?

It depends on the fault rather than the brand. A single blown component is cheap; a board with multiple shorted rails or prior bad rework takes longer and costs more. We diagnose first, then send a written quote before any chargeable work. If the repair is not worth doing against a replacement, we will tell you.

What makes of computer and printer do you repair?

Most mainstream makes — Dell, HP, Lenovo, Apple, MSI on the laptop side; Sony, Microsoft and Nintendo on the console side; Bambu Lab, Creality, Prusa, Anycubic and Elegoo on the printer side. If you are not sure whether your model is in scope, send a photo of the board and the fault and we will tell you straight.

Can you repair a Bambu A1?

Yes. Bambu A1 and A1 mini repairs are a regular job on the bench — toolhead PCBs, hotend cable failures, mainboard shorts and AMS Lite issues. We work board-level rather than swapping out the whole unit, so the fix is usually a fraction of a replacement printer.

How do I start a repair booking?

Message us with the device, the fault and a couple of photos through the contact page. We confirm scope and likely turnaround before you post anything. The full step-by-step posting flow is on the how-it-works page.

Where do I post my device from in the UK?

Anywhere in the UK. Customers ship in from across England, Scotland, Wales and Northern Ireland — Royal Mail tracked or a courier of your choice. We share the postal address once your booking is confirmed, not before.