My first HP-35 and a happy end

[jebem]

(09-23-2014 11:54 AM)Jeff O. Wrote:  Did you carefully remove the back label with heat and patience, or just poke holes to get at the screws? Which version is it? (Some experts can probably tell by looking at the circuit board and other evidence in your pictures, but I cannot.)

Hi Jeff,
Thanks for your reply.

Well, usually I'm not a patient guy (like I should be on these nice rarities), only because I couldn't wait... although later I really regret by being like this.
So, I should have used a hair dryer, but this time I have just have used this old technique of breathing into the label while using a X-acto knife to carefully lift the label in order to access the screw holes.
I believe the label was not damaged in the removal procedures. I will see later when reassembling the unit after cleaning it.

Concerning the calculator generation, from what I've been reading, I came to the conclusion that there are 4 different generations (at least...?).
Mine should be a generation 3, made in USA yr 1973, because it already sports the "HP 35" logo in the front label, but the keyboard legends are still printed on the overlay.

I will upload full photos of the inside and outside as soon as I have time to do it.