No lamps indicate that the tester is not seeing normal supply at the receptacle. Possible causes include an upstream protective device or an open conductor, but the tester does not locate the interruption.
source-governedDiagnostic estimate. Not a quote, not a substitute for a licensed electrician.source pack dated 2026-09-13 · authority hashes pending
Where to stop. Reading a plug-in tester and using its TEST function as directed by the manufacturer are homeowner-safe observations. Do not open a receptacle box, move conductors, or attempt wiring correction; those are licensed-electrician tasks. The cited RT250 does not indicate ground quality, multiple hot wires, neutral/ground reversal, or most combinations of defects. This is general information, not a quote and not a substitute for a licensed electrician.
Electrical Fault Check provides general diagnostic information only. It is not professional advice, not a quote, and not a substitute for a licensed electrician. Do not work on live wiring. If you see smoke, sparks, burning smell, heat, shock, water exposure, or repeated tripping, stop using the circuit and contact a licensed electrician or emergency services as appropriate.