About John Warren Electronic Repairs

John Warren Electronics is an Irish owned company founded in 1987. John Warren holds a City and Guilds qualification in Telecommunication Engineering and in Marine Electronics and also holds a degree in Electronic Engineering (University of Limerick, 1985). Prior to the formation of the company John worked for Marconi Marine (Electronics Officer) and Digital (Electronic Engineer). He also worked with Dungarvan Electronic Services for customers such as Bell Ferries, Waterford Co-Operative, Waterford Crystal and Avonmore on a variety of projects.

Prior to the formation of his own company John gained a wealth of experience from all sectors of Irish industry and developed a network of contacts and suppliers. John Warren Electronics was established to provide specialised electronic design and repair work for the Pharmaceutical, Healthcare, Manufacturing and Agricultural sectors.

The company specialises in troubleshooting electronic problems either on site or in it's workshops which are located in Dungarvan, Co. Waterford.
Industrial electronic design is another key service - the company has been involved in the development of industrial manufacturing, packaging and quality systems for various customers.
The company specialises in modifying and upgrading existing electronic systems in a cost effective and user friendly manner.
John Warren Electronics incorporates specialists in the fields of electronics, electrical engineering, computer science and instrumentation.


"Our company uses marking machines that are essentially obsolete. John Warren Electronics repair these machines. The fact that these machines are still in operation is a tribute to the company and has meant that we have got back into production with minimal downtime."

Liam Harrison, Electrical Manager, Waterford Crystal

"We routinely send various small pieces of agricultural equipment and pcb boards to John Warren Electronics. We receive an excellent service – if something is urgent it will be given priority and get us back up and running as quickly as possible."

Derek O'Brien, Store Manager, Slattery Dairy and Refrigeration

"I recently worked closely with John Warren Electronics to design a mobile cleaning-in-place skid. The design was quite complex and the brief changed a number of times. The company was very flexible and worked with us to optimise the design throughout all stages of planning, design, development and qualification."

Michael Morrissey, Project Manager, GSK

"As a small school we do not have the resources to spend time sourcing components for our Technology and Engineering students. John Warren Electronics has been very helpful to us in this regard by sourcing components and recommending alternatives when specific items could not be obtained."

Padraig Kennedy, Teacher, CBS Dungarvan

"John Warren Electronics has participated in a number of projects for our company. In each case they have provided supporting documentation as requested which has been both accurate and precise. I would have no hesitation in recommending the company to you."

Laurent Borla, Production Manager, Arkopharma

"As a Subject Matter Expert (Electrical & Instrumentation Trades) with FAS I have used the expertise of John Warren Electronics on a number of occasions in the development of the revised curricula for the Electrical, Electrical Instrumentation and Instrumentation trades. The expertise and technical advice offered by the company has been exceptional."

Noel Hackett, Subject Matter Expert (Electrical and Instrumentation) FAS

"The MES project was a major initiative for our sites. It involved two years work and the interfacing of the system with over fifty machines each of which was unique in it's own way. The contribution of John Warren Electronics was invaluable in ensuring that all preparatory work was completed up-front thereby minimising down time and maximising site efficiency. The expertise offered was second to none!"
Adrian Kirwan, Manufacturing Systems Manager, GSK