Would it work if I swapped a monitor motherboard with a tv panel

Only if the TV has the same electrical and data connection as the original screen from the monitor. You would need the datasheet for both of those and compare the wiring. You may also have to replace the EEPROM on the LCD driver board from the original screen to the TV screen. Comparing the datasheets will be vital. Let is know what make and model your TV as well as your monitor is and let us know what happened to the original monitor screen.