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Harald · (This post was last modified: 10-12-2015 10:21 PM by Harald.)

(10-12-2015 06:40 PM)Geoff Quickfall Wrote: Further:

Using your example numbers:

#2. Sounds like module/battery block connection, see previous post.

#3. LCD internal zebra strip. Involves removal and disassembly of the LCD panel to access and clean zebra.

Geoff

Hi Geoff,

Thanks for your reply!

I agree with you on #3 and I will attempt to clean the zebra.

On #2 I am not so sure, because I have swapped the main PCB and also soldered wires to the keyboard to power the calculator - still the same behaviour.
What I forgot to mention is that when I disconnect power lots of segments show up before the display shuts down. I think it is more likely to be the display PCB that is causing the problem

Harald

PS: sorry for bugging you - did you have a look for RAM chips? Smile