Do not assume a motherboard from an HP Ink Tank 115 is the same as an HP Ink Tank 115 Wireless or 115 Plus . The pinouts for the control panel and wireless module differ.
| Component | Details | |-----------|---------| | Main SoC | or similar ARM-based MCU (not disclosed by HP) | | Memory | Winbond 25Q32JV (4MB serial flash) – holds firmware | | Motor driver | Toshiba TB67S109AFTG (stepper driver) | | Printhead driver | Custom HP ASIC (integrated into SoC) | | Power input | 12V DC, 2A (barrel jack) | | USB interface | Type-B (printer standard) – USB 2.0 High Speed | | Reset points | JP1, JP2 (unpopulated test points) | | EEPROM | 24C02WP (2Kbit) – stores page count, error logs | hp ink tank 115 motherboard
If the printer shows absolutely no signs of life—no lights, no sounds, no movement—but you have verified the power outlet and power adapter are working, the motherboard has likely short-circuited. Do not assume a motherboard from an HP