Remove the USB-C charging cable from the bottom of the controller. Keep the panel connected to the top USB-A port, then press and hold M. A quick tap is different from a long press. If needed, charge through the bottom port and unplug before trying again. If it still fails, tell us whether the screen stays dark, the screen turns on but the panel stays dark, or it starts and stops early.

Check the bottom USB-C port, then try a compatible charging cable and wall adapter. A dark idle screen alone does not prove the battery is dead. If the display stays unclear or no indicator appears, contact us with the controller label and a photo of the display. The port, cable, power source or controller may be involved.

Charging time and runtime depend on the controller and selected settings. If the first recharge fails, the battery drains unusually quickly or the display is unclear, tell us the session duration and settings, and send the controller label. Do not keep repeating long charges or assume one fixed session count applies to every setup.

Remove the charging cable and check the panel connection. If the visible red light stays off or cuts out while the timer runs, contact support. This is different from the controller screen staying dark.

Charge, unplug and check the panel connection. If it repeats, tell us how many minutes it runs, the selected timer and energy settings, and whether NiR is on. If the session ends at 10 minutes, first check whether the default 10-minute timer was still selected.

Near-infrared is invisible. Check the NiR indicator on the screen; switching it on may not make the panel look brighter. A visible red light that used to work, a changed visible pattern or a section that now flickers needs support. Do not look directly into the LEDs to test them.

Check the normal setup, including removing the charging cable and connecting the panel. If a button is stuck or remains unresponsive, contact us. Do not open the controller or force a button.

This is normal. The light turns off automatically when the selected session ends. There is no end-of-session beep.

Check that the hook-and-loop faces meet and gently remove caught hair or lint. If the closure still will not hold, email us for help. Do not keep tightening the straps to compensate for a damaged closure.

Contact us about the damaged strap and include a photo if possible. Cleaning the fastening surface will not repair separated layers. Do not glue, sew or cut the strap as a troubleshooting step.

The two pieces may arrive fastened together. Watch the attachment and removal videos below. If they seem sewn together, fused or difficult to separate without damage, stop and ask us before cutting or modifying them.

Check orientation and gently reseat the accessible controller connector once. Do not force it or pull on the cable. If power changes when the cable moves, or a connector is bent or damaged, stop use and contact us.

Stop use and disconnect power. Email us about the affected adapter, cable, controller or panel, with a photo if possible. Do not keep charging or bending a damaged part to make it work. For persistent odor or material sensitivity, ask us to check the details for your device.

Your setup uses a panel, controller, two straps and a USB-C charging cable. Email us about missing parts or questions about the wall adapter in your package. Remove only clearly identifiable shipping film. If you cannot tell it from the permanent surface, ask us before peeling. Removed shipping film does not need to be reapplied.

Your setup uses the panel, controller, two straps and a USB-C charging cable. Contact us if something is missing. Remove only clearly identifiable shipping film; if you cannot tell it from the permanent surface, ask us before peeling.

Charging time and runtime depend on the controller and settings. If the charge display is unclear, the battery drains unusually quickly, or the first recharge fails, send us your controller label and the symptoms. Do not keep repeating long charges.

This guide covers the Thyro Light neck device. Do not look into the LEDs. Ask us before using a different placement, a cloth barrier, or combining light sessions with a massager or sauna; do not reuse this routine for the eyes, scalp or another product.

For material sensitivities, a persistent odor, adapter ratings, international voltage, country of manufacture, EMF testing or certification documents, email us with the label from your device. We can check the details for your model.

Thyro Light has a 1-year device warranty and a 120-day money-back guarantee. Contact us for eligibility and return instructions, including Amazon and gift purchases. Ask your clinician about lab timing or worsening symptoms; do not extend sessions because you have not noticed a change.

Ask us about the combination and your clinician about your treatment plan before adding sessions. Do not automatically repeat the neck routine on another body area or assume overlapping treatments are interchangeable.

Thyro Light uses LEDs with 630 nm and 660 nm red light plus 830 nm and 850 nm near-infrared light. It is not a laser. For model-specific power, irradiance, adapter compatibility, EMF testing or certification documents, send us the label from your device. The product page Scientific References lists the research.