Hello, a client left a IP Video intercom indoor station, said it smelled. There is burnt SOT23-6 IC since it's HikVision I highly suspect local chineese production or their entirely in a whole IC. I could tell him that he can buy new one but let's try maybe, someone has a hint. I have checked various SMD catalogues but marking 33=M1P is not existing, searching by 33 or M1P of course gives me chips but none of them could be applied here, there is now way to put SOT23-3 diode in there.

Attachment below, device model is DS-KH6320-WTE1.

Hello,

I have tried myself but I have problem looking in chineese for parts at least what is laser marked here doesn't help me to even find someone from china selling that IC. I have managed to find SOT23-6 power IC which also is burned. For my guess it's probably DC-DC converter of some kind when plugged with known good LCD what comes extremely hot first is SOT23-6 power chip which I have managed to find at Ali and order like 50 of them. For some suggestion this board works from type C PD power supply 20V input.

I could buy another board, they are not particularily expensive...