"HELP" finding none existing datasheet ic

Thread Starter


Joined Mar 27, 2023
Screenshot_20230328_110049_Gallery.jpgScreenshot_20230328_110052_Gallery.jpgHi everyone, so i'm currently having trouble finding datasheets for these 2 ic, first one is LM4505B and second is 2623 UY, anyone have any idea what is the function of these ic?
They belongs to a chinese handheld date printer that my customer ask me to fix but there is no datasheet nor anywhere that sells these ic.

HScreenshot_20230328_110049_Gallery.jpgScreenshot_20230328_110052_Gallery.jpgScreenshot_20230328_110049_Gallery.jpgScreenshot_20230328_110052_Gallery.jpgHope for the best anyway ;)