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HP-33E Missing Pin on Memory Chip
05-03-2024, 11:34 AM
Post: #9
mikemorris Offline
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RE: HP-33E Missing Pin on Memory Chip
In case its helpful to anyone, the attached photo shows the identifying codes on the three chips in my HP33E. My HP-33E is one of the earlier models with the pressure assembled PCB sandwhich. Serial Number 1920A96400, made in the USA. The "dummy" chip with the missing power lead is the one on the left which is closest to the power-supply PCB.    
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RE: HP-33E Missing Pin on Memory Chip - mikemorris - 05-03-2024 11:34 AM



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