Start With the Symptom You Are Seeing

A DEXIS Ti2 problem usually shows up in one of three ways: the imaging software does not detect the sensor, the sensor disconnects or freezes during capture, or the images look wrong, with noise, lines, blank areas or poor contrast. Each has a different set of likely causes, and many of them have nothing to do with the sensor itself.

This guide works through each symptom with safe, non-invasive checks. If your Ti2 is within its first year, DEXIS's unconditional warranty and support should be your first call. Outside coverage, these checks still help you describe the problem clearly to any service provider.

Dexis Ti2 Not Detected or Poor Images Fixes on Repair Guru

Symptom One: The Sensor Is Not Detected

Likely causes

The DEXIS IO Sensor Driver is missing, outdated or corrupted.
The imaging software is not configured for the sensor.
A USB port or hub is not supplying stable power or data.
A recent operating system or software update changed settings.
Physical damage to the cable or USB end.

Safe checks

Restart the imaging software, then the computer.
Plug the sensor directly into a different USB port, avoiding unpowered hubs.
Try the sensor on another computer that already has the DEXIS driver installed.
Confirm the driver and imaging software are up to date, following DEXIS guidance.

If the sensor works on another computer, the problem is on the original workstation, not the sensor. If the fault follows the sensor, Repair.Dental's DEXIS sensor repair page describes its DEXIS sensor services.

Symptom Two: The Sensor Disconnects or Freezes

Intermittent disconnection is often linked to the cable or the USB connection. DEXIS designed the Ti2's cable with a WiseAngle design and a welded USB connection to reduce stress, but damage can still occur from pulling, crushing or repeated sharp bends.

Safe checks

Watch whether disconnection happens when the cable is moved or bent in a particular spot.
Inspect the full cable length for kinks, crush marks or cuts.
Check the USB end for looseness.
Rule out power-saving settings that switch off USB ports.

If disconnection follows cable movement, stop using the sensor and seek assessment. Do not tape or splice the cable.

Symptom Three: Images Are Noisy, Blank or Distorted

DEXIS describes the Ti2's CleanCapture technology as reducing noise and enhancing anatomical detail, and says the sensor adapts to varying exposure levels, generators and techniques. When image quality drops noticeably, look at technique and settings before the sensor.

Confirm the correct sensor is selected in the imaging software.
Check positioning: is the active side facing the X-ray source?
Confirm exposure settings match your practice's normal protocol. Do not change generator settings beyond your established protocol to compensate.
Compare with images taken on another sensor in the same operatory.

Persistent lines, consistent blank areas or artifacts that appear on every image regardless of technique suggest an internal fault.

Problems That Appear After an Update

DEXIS lists automatic software updates and device health monitoring for the Ti2. Updates usually improve reliability, but a workstation update, a new imaging software version or a change to the operating system can occasionally interrupt detection on one computer. If the Ti2 stopped working on a single workstation right after an update, while it still works elsewhere, the update is the most likely starting point. DEXIS remote assistance is the natural route for software-side problems.

Keep a Simple Fault Log

Intermittent sensor problems are hard to diagnose from memory. A short log helps any support team:

Date, operatory and computer used.
What happened: not detected, disconnected or poor image.
What the team was doing at the time, such as moving the cable or switching patients.
Which checks were tried and what changed.

Troubleshooting Summary

Symptom	Check first	Points to the sensor if…
Not detected	Driver, software, USB port, another PC	It fails on every correctly set-up computer
Disconnects	Cable movement, USB end, power settings	It drops when the cable is moved
Noisy or poor images	Software selection, positioning, technique	Artifacts appear on every image
Blank image	Sensor orientation, exposure trigger	Blank images persist with correct technique
Visible damage	None: stop use	Always

When Every Sensor in the Practice Has the Same Problem

If several sensors fail in the same way at the same time, the cause is almost certainly shared: a software update, a network or database issue, or a workstation image rolled out across operatories. In that case, focus on the software side and contact DEXIS support before assuming multiple sensors have failed together.

Signs to Stop and Seek Service

A cracked or deeply bitten housing.
Exposed fibers or wires anywhere on the cable.
Repeated failure on multiple correctly configured computers.
Image artifacts that persist regardless of technique.

Never open the sensor housing or attempt cable repairs yourself. If you are new to sensor service, the Repair.Dental FAQ explains how the process works.

Getting the Right Help

In the first year, DEXIS lists next-day replacement for performance issues. DEXIS also offers remote assistance and Connect Pro monitoring. Outside coverage, you can contact Repair.Dental to discuss your Ti2 and what an assessment would involve, or read about Repair.Dental's X-ray sensor repair services. For additional DEXIS-wide checks, see our DEXIS sensor troubleshooting guide.

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DEXIS Ti2 Not Detected or Poor Images? Fixes | Repair.Dental