First: is it really dead?
Before assuming the worst, check the three things that cause most "dead TV" calls — and none of them are the TV:
- The power strip or surge protector tripped or died — plug the TV straight into a wall outlet
- The wall outlet itself is dead — test it with a phone charger or a lamp
- The remote batteries are dead — press the power button on the TV body itself (most models have one, often under a flap or on the back)
If the TV comes on this way, you just saved yourself a diagnostic fee. If it still shows nothing — no standby light, no click, no response — continue below.
The power reset: fixes more than it should
Smart TVs run a small computer, and like any computer they can hang in a state that looks exactly like "dead." The power reset clears it:
- Unplug the TV from the wall
- Hold the TV’s own power button for 15 seconds while it’s unplugged (drains the residual charge)
- Leave it unplugged for a full 60 seconds
- Plug back in and try again
This alone revives a surprising share of "dead" TVs. If the standby light now comes on but the screen stays black, skip to the sound test below — that’s a different fault.
The sound test: the 10-second diagnosis
If the standby light is on but the screen stays black, turn the volume up. Hear audio? Press the menu button — does anything appear on screen?
Sound with a black screen almost always means the TV’s computer is alive and the **backlight or power delivery to the panel** has failed — a very different (and usually cheaper) repair than a dead set. We cover it in detail in the sound-but-no-picture guide.
A black screen with sound is one of the most misdiagnosed faults in TV repair — shops quote panel replacements for what is usually a backlight fix. A $25 diagnostic with photos of the screen tells you which one you have before anyone opens the TV.
Get a $25 diagnosticWhen it’s a board: what typically fails
A TV with no standby light at all, after the outlet and reset checks, usually has a failed internal board. The two candidates:
- **Power board** — converts wall power to the TV’s internal voltages. Fails after surges, lightning, and simple age (the capacitors dry out). The most common true "dead TV" cause
- **Main board** — the TV’s computer. Fails from the same causes plus firmware corruption. Less common, similar repair cost
Both are board-level replacements: the TV gets opened, the board gets swapped, the set gets tested. It’s a technician job — not because the parts are expensive (they often aren’t), but because identifying *which* board and *which revision* requires opening the set and reading its markings.
Never open a TV to look at boards yourself. The power supply holds lethal charge in its capacitors for minutes after unplugging — this is the one TV repair with a real safety risk for amateurs.
What the repair usually costs
Typical US shop rates for a dead TV that’s worth fixing: the power or main board part runs $40–120 depending on the model, plus $60–100 labor — so $100–220 all-in. A TV worth less than about $150–200 on the used market is usually not worth the repair, and an honest technician will tell you so.
Not sure whether your TV is worth fixing at all? That’s exactly what the diagnostic answers — for $25, with photos you already have, before you pay anyone a $95 house call to find out.
Get a $25 diagnosticCommon questions
My TV has no standby light at all. Is it dead?
Not necessarily. The standby circuit is fed by the power board, so a dead light points at the power board or everything upstream of it — outlet, strip, cord. Do the outlet and power-reset checks first; if the light never comes on, the power board is the likely culprit and the repair is usually worthwhile on TVs worth more than ~$150.
Can a power surge kill a TV instantly?
Yes — a surge or lightning strike can destroy the power board’s input stage in one event. If the TV died during or right after a storm, that’s the classic signature, and it’s also the case where a documented damage report matters for an insurance claim.
Is it worth repairing a 10-year-old TV?
Usually not, if the repair approaches half the cost of a comparable new set. The diagnostic report includes the estimated repair cost next to the TV’s realistic replacement value, so the decision is arithmetic, not guesswork.