Less downtime

Wave goodbye to the headaches caused by poorly functioning and ineffectual IT

Tired of technology that fails?
we TOTALLY understand

Diagnostics Technical Support can help.

Successfully managing a business in the digital age requires keeping in step with the latest technology and also knowing how to use that technology to fit your company’s needs.  DTS empowers your business to be a top competitor in your industry by providing quality market leadership that utilizes globally recognized standards for complete IT Managed Services.

DTS offers unrivaled Cloud Managed Services you can count on to help your business succeed and thrive in your industry.


Managed Services

Why pay more for expensive repairs when something goes wrong? Our Managed Services provide unlimited technical support, as well as proactive network monitoring and maintenance, ensuring you and your staff a worry-free experience.

Microsoft Office 365 

With Microsoft Office 365, you get full email functionality along with the latest updates, security features, back-up, spam filtering, and maintenance and support without buying, maintaining, or managing your own email server.

Data Protection and Disaster Recovery

Create a fortress that defends your company from unexpected disasters. Our super-secure Data Protection and Disaster Recovery services protect your company's valuable resources from fire, flood, hurricanes, server crashes and theft.

Cloud Solutions

Impress clients and stay one step ahead of the competition by accessing your business files and data through any device. With our hosted cloud solution DTS Cloud you will always have your data at your fingertips.

want to work quickly,
more efficiently and economically?


The highest


The happiest customers

DTS resolved some major challenges that we had with our existing computer systems and helped us upgrade to a more effective system in our offices. The techs at DTS are proven experts based upon their knowledge of the industry and the results. I would highly recommend DTS to anyone that needs a personable, knowledgeable technology company to manage their IT.

Ed Reier

General Manager at Contour Landscaping

Crisis Averted!


We recently transferred our email system from Rackspace to Microsoft 365. We were very nervous about the transfer itself, and making sure we didn’t lose any of our emails or data. David was helpful from the beginning, and is still supporting us after the transfer. He took the time to answer all of my questions. He almost always answered the phone when I called (no getting stuck in a queue), or called me back within minutes. The transfer went smoothly, but like anything technical, there were a few bumps. He was quick to answer via phone or email, and took as much time as we needed to be sure the problem was fixed. We are comfortable knowing that he is just a phone call away if we have any troubles in the future!

Jennie Frye

United Painting Services, Inc.

Startup Specialists

I am the Vice President of Business Development at a rapidly growing start up. We needed IT help to help keep us running smoothly, make software and hardware decisions, and help us scale our technology as quickly as we are growing. David and his team have filled these needs and more. David has provided valuable insight on everything including data backup strategy, networking, cloud computing, software, hardware, and connectivity. He supports our cell phones and peripherals as well. He is very responsive, providing time and money saving recommendations, and has a tremendous amount of integrity. David has helped us set up our office, and provides excellent support for all of our day to day and extraordinary needs as well. David is a true partner in growing our business and we are happy to work with him. He and his expert tech team are always friendly, professional, and fun to work with. It is my pleasure to recommend his work and I look forward to continuing to work with David in the future.less

Laura J. Greenberg (Sanchez)
Managing Partner at Verde Associates


I own a small manufacturing company in Rockford, IL and we just started to outsource our IT.  I delegated the decision to several members of my staff and after interviewing a few candidates locally and DTS they recommended DTS.  I stated my objection given DTS is located 100 miles from our factory but was convinced by the owner, David LeRoy, and my staff to give it a try.  We have retained DTS’ services now for six months and the experience has been exceptional!  I must admit I was a skeptic at first but quickly became a believer with DTS ability to easily connect remotely, troubleshoot, and solve our problems.  In addition, they have assisted in new servers, back-ups, new PC’s and software, and most recently heading up a new phone system implementation.  David is always available on short notice and very punctual with information, attending meetings, and meeting critical deadlines.  In a small business, timeliness is critical and DTS hasn’t missed a beat.  Highly recommended!

Joe Benjamin

Owner at Industrial Electronic Controls, Inc.


Contact Information

Diagnostics technical support, llc

5016 S. Blackstone Avenue

Chicago, IL 60615

Phone: 847-894-8758

IT Services

Get in touch

Click on the social media icons below and stay connected with us across the web and throughout your day.

Copyright 2016. Diagnostics Technical Support, LLC