About us

QES Limited was founded in 1990 as a high quality repair and engineering services business specialising in electronic power conversion equipment (Power Supplies). Twenty One years later our Quality Electronic Services are well known across a wide range of customers and markets world wide. We are proud to offer the most reliable, cost effective electronics repair solution in the UK.

Using QES to repair your Power Supplies will mean that you will benefit from a service that:

  • Shows repair yields better than 98%
  • Has a warranty return rate around 0.5%
  • Provides a 6 month warranty on all repairs
  • Operates on a 10 day turnaround time Works on a no fix no fee basis

As well as producing and repairing our own products we repair power supplies made by any other manufacturers; companies like Astec, Advance Power, Coutant, Cosel, Lambda, Liteon, Weir andXP Power plus hundreds of others. If thats not enough we also provide replacements for obsolete power supplies, our downloadable brochure explains this service and lists the models already available.