HP-65 1333A18516 - [SOLVED] request for advice
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06-17-2024, 05:20 AM
Post: #8
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RE: HP-65 1333A18516 - request for advice
(06-17-2024 02:06 AM)teenix Wrote: Hi Alberto, Hi Tony, thanks for your reply, no IC get warm when the calculator is turned on, also don't look at the values we posted in the previous messages, you need to look at the values we posted in the pictures galleries, are those named Voltages and Tensioni (Italian for Voltages) the Vcc and the Vbsw are all there and correct in both units But you are right, the faulty unit has not RCD, not Step in, not step out and no signals at DISP0 - DISP4 Our guess is that a shortened trace put everything down, let's hope this has not fried anything as the Anode and Cathode drivers from the donor were perfectly working before the transplant Also, we soldered the Anode driver and cathode Driver originally from this board (1333....) back into the donor board and they where not working, but this doesn't prove anything Will be away for a week or so, in the next steps we will remove the Anode and Cathode drivers and we will inspect the traces underneath , also we will check if with the Anode and cathode drivers removed the signals at the logic board will get any better We'll keep you posted on this Take care and thanks for the support 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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