// LAPTOP LOGIC BOARD REPAIR
Laptop Logic Board Repair in St Andrews. Component-Level Fixes
When your laptop will not power on, randomly shuts down, fails to charge, or has no display output, the problem often sits on the logic board. The main circuit board that connects every component in your machine. Most repair shops will tell you the motherboard needs replacing entirely, quoting hundreds of pounds for a new board plus labour. At Repair St Andrews, we do something different: we diagnose and repair faults at the component level, fixing the specific chip, capacitor, or circuit that has failed rather than swapping the whole board. We have been doing component-level repairs at 1 City Rd since 2011, saving our customers significant money on machines that other shops write off.
Common Logic Board Faults We Repair
Chip Failure
Liquid damage corrosion. Spilled liquid that has reached the logic board causes corrosion on component pins and traces. If caught early, ultrasonic cleaning and replacement of corroded components can save the board.
Power Issues
You press the power button and nothing happens. No lights, no fan spin, no sign of life. This is often caused by a failed power delivery circuit, a blown MOSFET, a shorted capacitor, or a damaged charging IC.
Dead Ports
The laptop does not recognise the charger, charges intermittently, or USB ports have stopped working. The charging circuit on the logic board contains multiple components that can fail, from the charging IC to SMD fuses and capacitors.
Overheating
GPU failure symptoms include no display output, visual artefacts (coloured squares, lines, or distortion), or the laptop crashing under graphical load. On laptops with soldered GPUs, we can sometimes re-flow or replace the graphics chip.
No Boot / Boot Loop
If your laptop powers off without warning or restarts in a loop, the fault could be a thermal shutdown, a power regulation issue, or a failing component on the logic board that shorts intermittently.
// OUR PROCESS
Our Logic Board Repair Process
We keep the process simple so your device is back in your hands quickly.
Schematic-Level Diagnosis
Logic board repair starts with understanding how the board is supposed to work. We use board schematics and boardview files to trace power rails, identify component values, and locate test points. With a multimeter and oscilloscope, we measure voltages, check for shorts, and isolate exactly which component or circuit has failed. This precise diagnosis is what separates component-level repair from generic troubleshooting.
Micro-Soldering Repair
Once the faulty component is identified, we use professional micro-soldering equipment. Hot air rework station, soldering iron with fine tips, and flux. To remove the damaged component and solder a replacement. Components on laptop logic boards are often tiny surface-mount devices (0402 or 0603 size capacitors, QFN chips, BGA packages) that require magnification and steady hands to work with.
Full System Testing
After the repair, we reassemble the laptop and run comprehensive tests: power-on, charging, display output, USB ports, Wi-Fi, Bluetooth, audio, keyboard, trackpad, and a thermal stress test to verify stability under sustained load. We test for the specific symptom that brought the machine in, plus a full system check to catch any secondary faults.
Turnaround Time
Logic board repairs typically take two to five working days. The diagnosis phase can be the most time-consuming. Tracing a fault on a multi-layer circuit board with hundreds of components requires methodical testing. Once the fault is found, the actual repair is often quick, but we then run extended stability tests to ensure the fix is reliable. If we need to order specific components (particular ICs, specialised chips), that can add a day or two.
Pricing
Logic board repair pricing depends on the complexity of the fault. A blown fuse or shorted capacitor is a relatively quick fix. A failed charging IC, GPU re-flow, or liquid damage repair requiring multiple component replacements takes more time and costs accordingly. However, component-level repair is almost always significantly cheaper than a full motherboard replacement. We diagnose first and quote before doing any repair work. Call 01334 478866 for a free initial assessment.
Frequently Asked Questions
What is the difference between logic board repair and motherboard replacement?
Motherboard replacement means swapping the entire main circuit board for a new or refurbished one. This is expensive because the board itself costs hundreds of pounds, and on many laptops the CPU, GPU, and RAM are soldered onto it. Logic board repair means finding the specific component that has failed (a capacitor, resistor, IC chip, or connector) and replacing just that part. It requires specialised skills and equipment but costs a fraction of a full board replacement.
Can you repair liquid-damaged logic boards?
Yes, and the sooner the better. When liquid reaches a logic board, it causes short circuits and corrosion. If you bring the laptop to us quickly. Ideally within 24 to 48 hours of the spill. We can ultrasonically clean the board, remove corrosion, and replace any components that have been damaged. The longer you wait or continue using the laptop, the more the corrosion spreads and the more extensive (and expensive) the repair becomes.
My laptop has been declared unrepairable by another shop. Can you still fix it?
Possibly. Many general repair shops do not have the equipment or expertise for component-level board repair, so they declare the laptop unrepairable when what they really mean is that they cannot fix it. We regularly repair machines that have been written off elsewhere. Bring it to us for a second opinion. There is no charge for the initial assessment.
Is logic board repair reliable? Will it last?
Yes. When done properly with quality components and correct soldering technique, a component-level repair is as durable as the original. We replace failed components with parts that meet or exceed the original specifications, and we test thoroughly before returning the machine. We stand behind our logic board repairs with a warranty.
Is logic board repair worth the cost compared to a new laptop?
In most cases, yes. A component-level logic board repair typically costs a fraction of a new laptop, and it saves a machine that is otherwise perfectly functional. If your laptop is less than five years old and the rest of the hardware is sound. Good screen, working keyboard, adequate RAM and storage. Repairing the logic board makes excellent financial sense. We will give you an honest assessment: if the repair cost approaches the value of the machine, we will tell you straight and help you weigh your options.
What causes logic board failure?
The most common causes are liquid damage, power surges (from faulty chargers or electrical faults), overheating due to blocked ventilation or failed cooling fans, and simple component aging. Manufacturing defects can also cause premature failure. Some laptop models have known weak points where specific components fail more frequently. Physical impact from drops can crack solder joints or damage ICs too. Whatever the cause, our diagnostic process identifies the exact fault so we can fix it precisely. If you are unsure what happened, just bring the laptop in and we will work it out.
We also offer MacBook repair, data recovery, and laptop screen repair. See all our computer repair services in St Andrews. We also repair iPhone logic boards. If you know your model, you can book directly for your MacBook Pro 16" M3 Pro / M3 Max, MacBook Pro 14" M2 Pro / M2 Max, Dell XPS Series and HP Spectre Series. Head back to our homepage to see the full range of services we offer.
// GET STARTED
Book Your Laptop Logic Board Repair
Visit us at 1 City Rd, St Andrews, KY16 9XQ | Mon–Fri 09:30–17:30, Sat 10:00–17:00