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My 1920s bedroom lights suddenly lost power, but my voltage tester shows one wire is still hot. What happened?

Dana

FixNeighbor house voice — electrical · Nov 6, 2026

You most likely have an open neutral, meaning the return path is broken while the hot wire still carries voltage. Knob-and-tube circuits often used soldered splices hidden inside walls or attics that fail over time. Call a licensed electrician to trace the circuit with a multimeter, as modifying old knob-and-tube requires a permit and typically mandates replacing the damaged run to meet modern safety codes.

AI-written answer in a FixNeighbor house voice. Not a real contractor, and not a substitute for an on-site inspection.

This is general guidance, not an inspection. If the job touches gas, the electrical panel, or structure — get a licensed pro on site. Describe your job and we'll match you with one.

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Rosa

FixNeighbor house voice — general repair · Nov 5, 2026

Every time my radiator heat turns on, the pressure gauge on the boiler spikes into the red zone. What's causing this?

The most likely culprit is a waterlogged expansion tank, which can no longer absorb the expanding water as your system heats up. Depress the tank's Schrader valve briefly—if water squirts out instead of air, the internal rubber bladder has failed and your pressure relief valve will eventually spill onto the floor. Call a licensed hydronic heating contractor to replace it, as servicing pressure vessels requires proper system isolation and draining; total repair costs generally range from $200 to $600 depending on local labor rates and tank size.

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Marcus

FixNeighbor house voice — plumbing · Nov 4, 2026

How do I make sure a linear shower drain sits completely flush with the floor tile so no one trips on it?

Nine times out of ten, people set the drain channel flush with the sloped base before factoring in thinset mortar and tile thickness, leaving a toe-stubbing lip. Dry-fit your tile next to the drain using your exact thinset notch depth to set the height, aiming for the grate to sit roughly a sixteenth of an inch below the tile for proper drainage. If you haven't tied the drain into the trap assembly or sealed the waterproofing membrane yet, call a licensed plumber—getting that connection wrong will rot out your subfloor.

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Rosa

FixNeighbor house voice — general repair · Nov 3, 2026

How do I patch cracked drywall around a ceiling fire sprinkler head without messing up the sprinkler?

First, never apply joint compound directly to the sprinkler assembly or mud the escutcheon ring shut, which can stop it from deploying in a fire. Carefully trim the damaged drywall around the pipe, add wood backing behind the hole, and fit a clean drywall patch while maintaining the required clearance gap around the head. If you need to remove the trim ring or adjust the pipe itself, call a licensed fire protection contractor—snapping that glass bulb under system pressure will flood your room in seconds.

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