28S Heat stake size? (Repairing a mostly working 28)

[rprosperi]

(06-07-2018 02:08 PM)wyatt8740 Wrote:  

(05-28-2018 01:42 PM)rprosperi Wrote:  Since you now have a 48SX, it's likely you'll stop wanting to use the 28S. The 48SX is just so much better in every way, it's hard to imagine wanting to go back.

Eh, I'm finding myself disagreeing so far.
The full alphabetic keyboard on the 28S makes programming it much more convenient. I find myself writing my programs on the 28S and then translating them for the 48. I also think I prefer the key feel on the 28S, and I like that it is smaller in my pocket, as well. Additionally, there are some functions that I can't seem to find on the 48SX, such as "RCLΣ", which I have to manually key in.
I also cannot find a 'catalog' button (a very useful feature), and the screen on the 28S is far more legible.
Additional minor annoyances include not having a "roll" button readily available, requiring using the arrow keys (slow) or adding it to the custom menu (takes up space that would be nice for other functions), and that some shifted alpha keys are not printed on the overlay, requiring looking in the manual to find out how to type a "greater than" (>) sign or similar.
The two things I like more about the 48SX so far are its usability in one hand, the fact that it has the "I" part of "I/O", and the ability to recall, edit, and re-store the custom menus rather than rewriting them from the ground up to tack something on the end.

(05-28-2018 01:42 PM)rprosperi Wrote:  And though it would be easy to only use '28s features' on the 48SX, definitely explore the expanded commands, as they offer much more.

I don't own the manuals for the 48SX except as PDF's, but I do own the manuals for the 28S. Having paper copies is really convenient.

(05-28-2018 01:42 PM)rprosperi Wrote:  Bill Wickes book "HP-48 Insights Part I - Principles and Programming" is a great (likely the best) resource for learning the 48SX, even if you already know RPL from the 28s. It's included in the MoHPC Document Set.

Thanks for the recommendation. I really prefer print books, but I am still thinking about getting that CD.
Is there a digital copy/torrent mirror somewhere, like with Linux distributions? Or is it intended to be "physical disc only" to provide revenue for HP Museum?

As for preference of 28 vs. 48 keyboard use and default key assignments, it's hard to appreciate a new machine when you've used another for a long time, but like most, I still think once you adjust to the 48, you won't look back.

I agree that paper books are far easier to read and learn from, though the search feature in the PDF is hard to beat (so, of course, the answer is to have both).

The MoHPC set comes on USB drive these days (outgrew a DVD or CDs) and is very well worth the modest cost. Many user manuals are available online from other sites (some even still from HP), but for almost all of the books, they are not available online as the authors have not granted permission to post their contents online while they have granted permission for distribution as part of the MoHPC Document set.

The Wickes book (start with "HP-48 Insights Part I - Principles and Programming") is often available on eBay and other sites, though the price can vary widely (e.g. currently $50-$435 on abebooks.com). I don't see one listed on eBay now, but I have seen it listed in the past for as low as $25.

You may want to consider having the LCD in your 48SX upgraded to a black LCD, it dramatically changes the ease of reading and overall feel of the machine. If interested, I can recommend someone to do this, it's a reasonable cost, low-risk, and oddly makes your 48sx seem much "better" than it was. Weird but true.