1,8t 24c02 immo reading problem

[Sumali]

Hi, i was able to read my immo chip yesterday. Today when i read or write chip every value is 00. Can anyone tell me wheres the problem. using ch341

[kiszka]

Hi, i was able to read my immo chip yesterday. Today when i read or write chip every value is 00. Can anyone tell me wheres the problem. using ch341

you read when the eeprom is on the PCB or desoldered