If your Vizio TV won’t turn on; no lights, no logo, no response to the remote, don’t throw it away just yet. In many cases, the problem is a failed power board, and the fix is far easier and cheaper than replacing the entire TV.   In this guide, I’ll walk through exactly how I diagnosed and fixed a Vizio V‑Series 50‑inch TV that appeared completely dead. This same process applies to many Vizio models and is one of the most common TV failures I see. Watch the full step-by-step