HP 48SX screen annunciator area smear

[striegel]

(06-05-2016 02:49 AM)Raymond Del Tondo Wrote:  

(06-05-2016 01:26 AM)striegel Wrote:  It's only apparent when power is applied, so it's not LCD leakage.

I think it's LCD bleeding. I have seen this on several SX units, mostly on pre-E and some early E units.

So, if this bleeding is confined to the annunciator area at the top of the screens, have you got a theory of why it happens this way? Factors like heat or vibration?

This particular machine came from Texas, where it gets considerably hotter for longer than around here (northeast Ohio).

Also, where is the dividing line for the early units? Mine is from 1990, week 35.