Hi,

if you need a replacement for this i would definitely suggest you to buy a new part instead of trying to repair. Check out the DL405 PLC's from AutomationDirect who are compatible with the TI435 hardware.

https://www.automationdirect.com/adc/overview/catalog/programmable_controllers/directlogic_series_plcs_(micro_to_small,_brick_-a-_modular)/directlogic_405_(small_modular_plc)

Regards