Almost a Red-Dot. It seems only to lack the hole! - Printable Version +- HP Forums (https://archived.hpcalc.org/museumforum) +-- Forum: HP Museum Forums (https://archived.hpcalc.org/museumforum/forum-1.html) +--- Forum: Old HP Forum Archives (https://archived.hpcalc.org/museumforum/forum-2.html) +--- Thread: Almost a Red-Dot. It seems only to lack the hole! (/thread-163316.html) |
Almost a Red-Dot. It seems only to lack the hole! - Ignazio Cara (Italy) - 02-21-2010 I have got ah HP-35 from a american guy (SF, CA) and this seems to be a red-dot without the hole on the keyboard face plate. Ist serial number is 1143A4799 like you can see on the pictures. It have a battery pack with part code 03501A, the first type released by HP for this kind of calculator. Let me know how do you think about.
Edited: 4 Mar 2010, 10:16 a.m. after one or more responses were posted
Re: Almost a Red-Dot. It seems only to lack the hole! - Michael de Estrada - 02-21-2010 It's an early Version 2. There are other differences between a Version 1 (Red Dot) and a Version 2. Early Version 2's shared a lot of similarities with the Red Dot, whereas later Version 2's were more similar to the Version 3, such as the serial numbers inside the battery compartment. Nonetheless, it's a nice find and looks to be in good condition.
Re: Almost a Red-Dot. It seems only to lack the hole! - Ignazio Cara (Italy) - 02-22-2010 Many thanks for your appreciated contribute. This calculator is in very good working order, after an accurate restore from a very dirty and oxidized state. It hasn't the original ROM bug. I have just ask to the seller the story of this calculator , but He hasn't answered yet. If he does I will inform you.
Ignazio
Re: Almost a Red-Dot. It seems only to lack the hole! - Matthias Wehrli - 02-22-2010 I guess it was a red Dot, but the upper faceplate was changed. Re: Almost a Red-Dot. It seems only to lack the hole! - Ignazio Cara (Italy) - 02-22-2010 As you can read in my latest post, the calculator hasn't the ROM bugs, bu I agree with you about the possibility that the keyboard face plate could be not so old. I'm awaiting for some information by the seller.
Ignazio
my understanding: - Frank Boehm (Germany) - 02-22-2010 It's a factory refurbished red dot. Re: my understanding: - Michael de Estrada - 02-22-2010 Maybe. Certainly the large rear label is not original and different from a Red Dot, but as you said would have been replaced if it had been refurbished by the factory. I am not so convinced by the serial number label, as there were a few Version 2's that had this style label (small numbers), and this serial number is higher than the earliest Version 2. Dr. Michael Eckstein has a database that has this information. You are correct that there is evidence of ROM replacement, and other evidence that the logic board itself is a Version 1 (Red Dot). Whether this was truly a Red Dot that has been factory refurbished or has been cobbled up from various pieces, some Red Dot and some not, is hard to tell, unless a factory work order or work makings can be found.
Re: my understanding: - Ignazio Cara (Italy) - 02-22-2010 Thanks Michael, thanks Frank,
Ignazio
ser# label - Frank Boehm (Germany) - 02-22-2010 The V2 and red dot ser# label differ, so it's actually impossible to falsify a V2 into a red dot. Probably a handful of people do know what to look for, but it's better not to tell ;) Great discussion. I can add...>> - tim m. - 02-22-2010 ...that my '35, #1143A31237, purchased from the original owner, is an early version 2 with bug that was refurbished by the owner. The back label states "HP-35" and one can see faint remnants of the old label. Plus, the original owner provided documentation indicating when the calculator was serviced for the "bug." I'm judging that it is early v. 2 (without opening it) based on lack of red dot and S/N label style. It is conceivable that the faceplate was replaced, but the original owner had the machine serviced within a year or so of purchase, so I doubt this.
-Tim Edited: 22 Feb 2010, 7:31 p.m.
|