Electronic Repair Services
Cornwall Electronic Repairs proudly offers comprehensive, expert electronic fault diagnosis and meticulous repair services tailored specifically for a wide variety of domestic appliances, commercial machinery, specialist technological devices, and vintage legacy electronic equipment.
For example, we focus on thoroughly identifying the root cause of each electronic failure. Where it is safe, practical and economically sensible, we then carry out repairs at PCB or individual component level rather than simply replacing complete assemblies.

Electronic Repair Services
Comprehensive diagnosis and expert repair services of sophisticated electronic equipment, tailored seamlessly for domestic, commercial, and specialist industrial applications. However, rather than automatically resorting to the expensive replacement of complete assemblies, our skilled technicians meticulously investigate the underlying root cause of equipment failure and execute precise repairs directly at the component or printed circuit board (PCB) level wherever it is practically and economically viable.
Typical faults can include:
- No power
- Intermittent operation
- Equipment shutting down
- Abnormal power-supply voltages
- Display or video faults
- Audio faults
- Control-system failures
- Overheating
- Short circuits
- Failed electronic components
- Damaged connectors
- Solder-joint and PCB faults
The very first stage in our comprehensive service process is normally a thorough diagnosis rather than an immediate and potentially unnecessary parts replacement. This careful investigative approach ensures we accurately pinpoint the root cause of the issue before taking any further corrective action.

Component-Level Fault Finding Services
Many modern repair processes involve replacing an entire circuit board.
Where practical, we take a different approach.
Once we identify the faulty circuit, we test individual components to pinpoint the underlying cause of the failure.
Components commonly encountered during repair include:
- Resistors
- Capacitors
- Diodes
- Schottky rectifiers
- Bridge rectifiers
- Transistors
- MOSFETs
- IGBTs
- Voltage regulators
- Optocouplers
- Relays
- Transformers
- Inductors
- Connectors
- Integrated circuits
Depending upon the PCB and type of damage, we may also be able to repair damaged tracks, pads, connectors and solder joints.
In some cases, component-level repair is not possible in every case, but it can provide an economical alternative when complete replacement boards are expensive or unavailable.

PCB Diagnostic Services
Printed circuit boards often contain multiple interconnected power distribution networks, sensitive analogue circuits, high-speed digital processing sections and critical control systems operating together. Effective fault diagnosis and component-level service repair depend on identifying the specific circuit or functional area responsible for the failure.
Our PCB repair diagnostic work may include:
- Visual PCB inspection
- Continuity and resistance testing
- Power-rail measurements
- Short-circuit investigation
- Diode and semiconductor testing
- Oscilloscope waveform analysis
- Signal tracing
- Clock and oscillator investigation
- Power-supply ripple analysis
- Thermal fault investigation
- Comparison of circuit stages
- Component testing
- Examination of connectors, tracks and solder joints
When comprehensive circuit diagrams, detailed schematics, or manufacturer-approved service documentation are readily available to the technician, these valuable technical resources can also significantly assist and accelerate the overall diagnostic process.

Electronic Testing & Measurement Services
We use professional electronic test equipment throughout the diagnostic and repair process to support accurate fault finding, measurement and verification.
Depending heavily upon the specific type of equipment involved and the exact nature of the underlying fault, this comprehensive service process can thoughtfully include:
- Digital multimeter measurements
- Oscilloscope waveform analysis
- Differential voltage measurement
- Component testing
- Semiconductor analysis
- ESR and capacitor testing
- Power-supply testing
- Current-limited power testing
- Signal injection and tracing
- Thermal analysis
- Functional testing
As a result, we select the most appropriate test method according to the specific circuit under investigation and the stage reached in the diagnostic process.

Equipment Assessment Services
Not every faulty item should immediately be repaired. However, we can assess electronic equipment to determine its condition, likely cause of failure and whether further diagnosis or repair is technically and economically worthwhile.
This can be particularly useful for older, valuable, specialist or difficult-to-replace equipment.
Sometimes the most important question is not simply:
“Can this be repaired?”
but:
“Is it worth repairing?”
We can assess electronic equipment to determine:
- The general condition of the equipment
- The likely area of failure
- Whether further diagnosis is practical
- Whether components or replacement assemblies are available
- Whether the equipment appears economically viable to repair
- Whether previous repair attempts have caused additional damage
This can be particularly valuable for older or specialist equipment.

Prototype & One-Off Electronic Investigation Services
Prototype and specialised one-off electronic assemblies can develop complex, intermittent faults that are difficult and time-consuming to diagnose. Because these systems often lack established troubleshooting procedures or repair documentation, technicians must investigate each fault methodically to identify its underlying cause.
We can support research and development projects involving advanced prototype electronic systems, particularly where complex or unexpected circuit behaviour requires detailed technical investigation and diagnosis.
Investigation may include:
- Power-rail analysis
- Signal examination
- Component testing
- Oscillator and clock investigation
- Circuit-stage testing
- Assembly fault investigation
- Comparison against available circuit information
Please contact our support team first with details of the prototype and a clear description of the problem your team is experiencing.

Legacy & Obsolete Electronic Equipment Services
Older equipment frequently remains perfectly functional and completely usable for many years long after the original manufacturer has officially ended its lifecycle support.
One of the main challenges in complex electronic repairs is sourcing the exact replacement circuit boards or proprietary assemblies needed to restore the equipment to working order.
Component-level repair can therefore be particularly valuable for:
- Discontinued electronic equipment
- Vintage electronics
- Older commercial equipment
- Obsolete control boards
- Unsupported power supplies
- Specialist electronic systems
- Equipment for which replacement parts are no longer manufactured
When original components are unavailable, we may be able to identify suitable modern equivalents.
Every case is different, so legacy equipment is assessed individually.

Commercial Electronic Fault Diagnosis Services
Component-level investigation of faulty commercial electronic equipment and PCB assemblies.
Replacing commercial electronic equipment can be expensive, especially when the fault affects only a single circuit board or electronic module.
Therefore, we can investigate commercial electronic equipment and PCB assemblies where component-level repair may offer an alternative to complete replacement.
Typical work may involve:
- Power-supply faults
- Control-board faults
- Electronic modules
- Interface electronics
- Failed semiconductor components
- Power switching circuits
- Intermittent electronic faults
- Legacy commercial equipment
- Obsolete circuit boards
We maintain a specialised focus on acquiring and evaluating unusual, highly intricate, technically challenging, or exceptionally difficult-to-replace electronic equipment that other buyers typically overlook. As a result, our expert team thrives on solving complex logistical and technical puzzles involving rare machinery, legacy hardware, and specialised industrial devices that require a profound level of expertise to properly assess, value, and safely handle from your facility.

Technical Investigation & Consultancy Services
Certain complex electronic malfunctions routinely extend far beyond the scope of a conventional repair, presenting unique and frustrating challenges for even the most experienced technicians. For example, when highly sophisticated modern devices suffer from deep-seated architectural failures or catastrophic component degradation, standard troubleshooting procedures often fall drastically short of achieving a permanent and reliable resolution.
Technical assistance may be available for:
- Electronic fault investigation
- Failure analysis
- Test methodology
- PCB assessment
- Repair feasibility
- Legacy equipment investigation
- Technical evaluation of unusual electronic faults
We assess each item carefully and individually to support an accurate diagnosis. However, our assessment does not replace formal product certification, statutory compliance testing or safety approval carried out by an appropriately accredited body.
The Repair Service Process
Our comprehensive diagnostic and repair service workflow is specifically designed to help you completely understand every single step of the process as we skillfully and efficiently restore your malfunctioning electronic devices back to their optimal working condition.
Step One: Tell Us About the Fault
Provide the manufacturer, model number and a description of what the equipment is doing – or not doing.
Photographs can also be useful, particularly for circuit boards and specialist equipment.
Step Two: Equipment Assessment
We examine the equipment and determine the most appropriate diagnostic approach.
Step Three: Fault Diagnosis
Electronic measurements and testing are used to identify the faulty circuit, component or assembly wherever practical.
Step Four: Repair Decision
Once the likely fault and repair requirements are understood, we can determine whether repair is practical and economically worthwhile.
Step Five: Repair & Testing
Approved repairs are completed and the equipment is tested to confirm correct operation as far as reasonably possible.
Explore Our Expert Services
Explore our extensive and highly comprehensive electronic repair service and diagnostic capabilities, expertly designed to cater seamlessly to a wide variety of residential, commercial, and industrial applications.
Our dedicated team of skilled technicians utilises cutting-edge technology and advanced diagnostic tools to quickly identify issues, restore optimal performance, and ensure long-lasting reliability for all your critical electronic systems.

PCB Diagnostics
Advanced printed circuit board testing and troubleshooting methodologies are essential components of modern electronic manufacturing, ensuring that complex assemblies meet the highest standards of reliability, safety, and operational performance before they are deployed into demanding real-world applications. For example, by utilising state-of-the-art diagnostic equipment and deeply experienced engineering techniques, technical specialists can quickly isolate microscopic faults, intermittent electrical connections, and intricate design flaws that might otherwise compromise the integrity of the entire finished product.

Fault Finding
We provide exceptionally precise component-level fault finding and intricate repair services to ensure your advanced electronic devices are fully restored to their optimal working condition. For example, our highly skilled technical professionals utilise state-of-the-art diagnostic equipment and cutting-edge methodologies to meticulously isolate microscopic failures deep within complex circuitry, allowing us to perform targeted restorations that save you time, eliminate unnecessary waste, and drastically reduce the exorbitant costs typically associated with replacing entire hardware assemblies.

Legacy Support
We proudly provide specialised maintenance, comprehensive diagnostics, and ongoing technical support services for a wide variety of legacy electronics and older hardware.
Our deeply dedicated team of highly experienced engineers works diligently to ensure that your older, time-tested systems continue to operate reliably and efficiently, actively preventing costly unexpected downtime and preserving the long-term value of your critical technological investments.
Not Sure Whether It Can Be Repaired?
Then please send us the exact manufacturer name, specific model number, and a detailed description of the fault you are experiencing using our Contact page.
Additionally, where it would be useful for our diagnostic process, please include clear photographs of the equipment or the internal circuit board to help us resolve the issue quickly.
Afterwards, we will evaluate the equipment to determine if it is suitable for assessment and repair.