HP-65 1508A04995 restoration and ideas to share
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06-10-2024, 12:25 PM
(This post was last modified: 06-12-2024 05:20 PM by albertofenini.)
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HP-65 1508A04995 restoration and ideas to share
Hello everyone
we have started to restore an HP-65, and I'm attaching few pictures Nothing on the cosmetic side, we have worked more on the functionality side we wanted however share two things and ask the forum about a curiosity inside the unit there were two labels, a bigger one that was loose inside the unit and a smaller one attached to the card reader unit it appears the unit was repaired in the 84, and we were curios to know if the codes on the label can be translated in the equivalent repair work performed, any idea ? we basically have only cleaned the unit and rebuilt the gummy wheel while doing so we have dropped a drop of the spray lubricant that we have pictured (@Administrators we are not whatsoever related to this product and/or its sale, if this is not convenient please let us know and we will remove the picture) this particular product is way better than what we used before (the WD-40) as it is "dry" and has made very very quiet the motor, so we wanted. to suggested also, we have found useful to mark with the tip of pen (red in this case) the position of the pin that keeps the gummy wheel attached to the card reader unit, a correspondent mark has to be done on the card reader we believe it can make easier the alignment procedure also, after the answers we had got about the correct size for the o-ring we had purchased a silicon tube ID 1/8" OD 1/4" which in metrics sets the OD at the value of : 6,35 mm this more or less the equivalent OD of a 006 o-ring which has an ID of 2,90 mm and thickness of 1,78 mm OD = 2,9+1,78+1,78 = 6,46 mm In the pictures you will notice the tubing cut and mounted on the wheel However, even with a drop of glue, the ID is slightly too big for the wheel and it slips without transporting correctly the card We went back to the o-ring (pictures will be updated soon) and it worked fine As anyone ever used the tubing approach and has experienced a similar problem ? Will keep posting, next works to be done is to clean the keyboard plate as the upper row is working intermittently and change we "clutch" Also one of the pins for connecting the external charger is missing and has been replaced with what looks like a needle to ensure the contact necessary for running on battery Take care and thanks for any idea you will want to share ! Pictures can be found here : HP-65 1508A04995 Edoardo & Alberto |
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Messages In This Thread |
HP-65 1508A04995 restoration and ideas to share - albertofenini - 06-10-2024 12:25 PM
RE: HP-65 1508A04995 restoration and ideas to share - albertofenini - 06-10-2024, 06:53 PM
RE: HP-65 1508A04995 restoration and ideas to share - Mike S - 06-11-2024, 02:14 AM
RE: HP-65 1508A04995 restoration and ideas to share - albertofenini - 06-12-2024, 05:30 PM
RE: HP-65 1508A04995 restoration and ideas to share - Mike S - 06-14-2024, 03:21 AM
RE: HP-65 1508A04995 restoration and ideas to share - teenix - 06-14-2024, 03:54 AM
RE: HP-65 1508A04995 restoration and ideas to share - albertofenini - 06-14-2024, 05:06 PM
RE: HP-65 1508A04995 restoration and ideas to share - John Garza (3665) - 06-14-2024, 07:21 PM
RE: HP-65 1508A04995 restoration and ideas to share - JohnRausch - 09-24-2024, 07:00 PM
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