**TENS Unit Not Shocking? Quick Fix & Troubleshooting!**
**Quick Fix:** Immediately check your TENS unit’s battery level and replace with fresh batteries if low, then slowly increase the intensity dial/button.
* **Power Check:**
* Is the TENS unit definitively ON?
* Are batteries inserted correctly, observing polarity (+/-)?
* Replace old, weak, or dead batteries with brand new ones.
* **Pad & Placement:**
* Are the electrode pads firmly adhered to clean, dry, unbroken skin? (Poor contact means no sensation).
* Are the pads still sticky and conductive? Replace dry, worn, or non-sticky pads.
* Are the pads securely snapped/plugged into their lead wires?
* **Lead Wire Integrity:**
* Are the lead wires firmly plugged into the TENS unit’s output ports?
* Inspect wires for any visible cuts, frays, or damage. Replace if compromised.
* Ensure a solid connection where wires connect to the pads.
* **Unit Settings:**
* **Increase Intensity:** Slowly turn up the intensity level. It might be set too low to feel.
* Try switching to a different mode or program.
* Check if the session timer has expired or if the unit is in a paused state.
* Verify no “key lock” or safety features are active on your model.
* **Isolation & Testing:**
* If your unit has multiple channels (e.g., A/B), test the pads and wires from the “non-shocking” channel on the *working* channel to pinpoint if the issue is with the pads/wires or the unit itself.
* Consider swapping out all current pads and lead wires for a brand new set; these are common wear items.
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