24/7 Emergency Repairs
Call +44 (0) 1827 281 976
Call +44 (0) 1827 281 976
Power supplies are critical components in virtually every kind of electrical or electronic system, where their role is to convert, regulate and deliver the correct voltage and current to downstream circuits. So many systems, from medical devices and industrial automation to consumer appliances, depend on stable, clean and reliable power, so power supply failure can be a catastrophe.
Picture these scenarios for example: Your factory’s PLC power module fails mid-shift, halting production. Or your data centre UPS supply exhibits ripple noise, threatening server health.
Replacement units may well be obsolete or prohibitively expensive, or your power supplies may be customised and can’t be replaced by “off-the-shelf” modules.
Our experts at Sellweb can find the solution. We’ll get your systems powered reliably again, cost-effectively with minimal disruption and a quick turn-around. Such is the value of our efficient power supply repair or refurbishment service.
At Sellweb, our engineers routinely service and repair a broad spectrum of power supply types, including:
Switch-mode (switching) power supplies
Linear power supplies
Regulated and unregulated supplies
Single-phase and three-phase units
Uninterruptible power supplies (UPS) / standby / emergency backup units
DC / AC supplies, inverters, converters
We are experienced at working with supplies from leading industrial and automation manufacturers such as Siemens, Fanuc, Mitsubishi, Heidenhain, Yaskawa, Bosch, Indramat, Eurotherm, Control Techniques, Danfoss, Kollmorgen, and more.
Every repair includes functional testing and loaded testing under real operating conditions to ensure performance and reliability.
When a power supply fails or underperforms it can present in many ways. One of the most common weak points is the electrolytic capacitor.
Capacitors are integral to the performance and efficiency of power supplies, playing a key role in voltage stabilisation, noise filtering and energy storage. Over time electrolytics dry out, lose capacitance or increase in internal resistance (ESR). This degrades ripple suppression and can lead to oscillations or regulation failure. Our specialists therefore frequently replace electrolytic capacitors.
At Sellweb we aim not only to restore a failed power supply, but to return it to reliable, production-quality status. We carefully carry out disassembly and inspection, component replacement and repair, circuit adjustment and calibration, stringent loaded and unloaded testing, and a final inspection before returning the unit to you with test reports and documented reliability assurance.
We offer 24/7 emergency repair capability, so in critical cases we can prioritise your repair to minimise downtime.
Electrolytic capacitors are replaced as these are critical with power supplies to keep AC ripple to a minimum.
The power supply manufacturers we support are:
