How to fix a JRC JCY-1850 Data Loggers POWER LED that fails to light?
- SSamantha WilkinsonAug 3, 2025
If the POWER LED on your JRC Data Logger isn't lighting up, several things could be happening. First, make sure the switchboard is supplying power. Next, check that the POWER SWITCH is turned on. Also, inspect the AC-line fuse in the Power Supply Unit and replace it if it's blown. If none of these steps work, there may be a fault in the Power Supply Unit.