Lx1692 Protection Pin 【2025】

If you are repairing an LCD TV or monitor and suspect the protection circuit is being triggered:

Note: Pin numbers above are referenced from the standard SOIC-20 package versions of the LX1692 (such as LX1692E). Always confirm the pinout against the specific datasheet for your chip version. lx1692 protection pin

Sometimes, the chip is the problem. The protection pin can develop an internal short to Vcc due to a power surge or a lightning strike. If you are repairing an LCD TV or

If one of the backlight tubes is cracked or its solder joints have failed, the transformer sees an infinite impedance. The voltage skyrockets, the over-voltage protection (OVP) circuit triggers, and the protection pin is pulled high. Fix: Replace the CCFL tube. Note: Pin numbers above are referenced from the