**English Translation:**
For the KANGJA T2916N TV, there is no raster, no image, and no sound when powered on. Beijing Sony TV Repair Center.
**Analysis and Maintenance:** Upon turning on the TV, the instantaneous measurement of the +B (140V) terminal voltage was normal, but after a while, the voltage dropped to 0V, suggesting that the protection circuit had been triggered. After disconnecting the load and removing V912, then forcibly turning on the device, it was found that the +B voltage was normal, leading to the suspicion of a false activation of the protection mechanism. The voltage at the c-terminal of V911 was measured to be around 3V, whereas it should normally be 0V. After shutting down the device for inspection, it was discovered that the sampling resistor R927 (165kΩ/0.5W) in the protection circuit was open-circuited, causing the protection circuit to activate.
**Solution:** Reinstall V912 and replace R927, which resolves the fault.
**Maintenance Tip:** When forcibly shutting down the device, it is essential to disconnect the load and connect a dummy load; otherwise, other components may be damaged. Beijing LG TV Repair.