If the IC becomes excessively hot immediately after power-up, it usually indicates an internal short or a short in the display panel's COF (Chip-on-Film).
If your component is a glass cylinder with two leads and the marking : Inx In518 Ic Pinout Diagram
Understanding the pinout is essential for troubleshooting common display issues like "No Display" or "Backlight OK, No Image". While it is often an internal OE component with limited public documentation, schematic diagrams reveal key connection points: If the IC becomes excessively hot immediately after
: You can find detailed technical diagrams and downloadable pinout zip files on Scribd . Applications & Usage Applications & Usage pins
pins. These capacitors frequently short-circuit, which can cause the IN518 to enter protection mode or burn out entirely.
You have the SOP-20 variant. Pins 19 and 20 are additional power/ground or test pins. Refer to the manufacturer’s addendum – many are no-connects or must be tied to VSS.