HP-65 1333A18516 - [SOLVED] request for advice
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06-15-2024, 07:25 PM
Post: #5
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RE: HP-65 1333A18516 - request for advice
(06-15-2024 05:35 AM)teenix Wrote: Pin 8 of the cathode driver is the Reset Pin (1820-1226) Hi Tony before take any signal with the scope we checked the voltages (please note that the card reader was not connected) Vbatt is 3,8 Vbsw @ the logic board (pin 12) is 3,8 1820-1226 Cathode Driver Vbsw @pin 4 : 0 V Vcc @pin 10 : 1 V Vbsw @ pin 15 : 0 V 1820-1029 Anode Driver Vbsw @ pin 11 : 7 V 1810-0147 Vbsw : 3,8 V 1810-0146 Vbsw 3,8 V We have also found three traces that looked like had been cut but continuity has been verified (you can find them in the updated gallery) However withe ICs and LDEs and Inductances mounted is pretty hard to check more traces Thanks for the support !! Updated gallery : HP-65 1333A18516 Edoardo & Alberto |
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Messages In This Thread |
HP-65 1333A18516 - [SOLVED] request for advice - albertofenini - 06-14-2024, 11:29 PM
RE: HP-65 1333A18516 - request for advice - teenix - 06-15-2024, 01:00 AM
RE: HP-65 1333A18516 - request for advice - albertofenini - 06-15-2024, 01:33 AM
RE: HP-65 1333A18516 - request for advice - teenix - 06-15-2024, 05:35 AM
RE: HP-65 1333A18516 - request for advice - albertofenini - 06-15-2024 07:25 PM
RE: HP-65 1333A18516 - request for advice - albertofenini - 06-16-2024, 06:21 PM
RE: HP-65 1333A18516 - request for advice - teenix - 06-17-2024, 02:06 AM
RE: HP-65 1333A18516 - request for advice - albertofenini - 06-17-2024, 05:20 AM
RE: HP-65 1333A18516 - [SOLVED] request for advice - albertofenini - 06-30-2024, 07:11 PM
RE: HP-65 1333A18516 - [SOLVED] request for advice - teenix - 06-30-2024, 11:44 PM
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