HP50g spins circles around the TI-89

[BartDB]

Having started my HP journey with the HP-28C & S, the 50G was a natural progression for me.

I have worked with Sharps & Casios, but I have never gotten on with TIs (tried several).

I purchased my first 50g in 2006 and in 2009 some lines on the display stopped working. I purchased another one and that has worked fine for 6 years now.

Perhaps it is lasting this long because it has light use. As mentioned elsewhere in this thread, computer and internet based mathematical programmes are starting to take over.

I opened the problem 50g and found it easy enough to open (screen connection is heatseal and not repairable - also I'm not convinced it is a connection problem).

I have repaired a few 48s and the results are quite good, but it is indeed a pain to open. I have never attempted to open a 28 and probably never will.