Re: 34C display problem Message #4 Posted by Daniel CLEMENT on 12 July 2011, 3:19 a.m., in response to message #3 by Michael de Estrada
Thank you for your valuable input.
@Dieter: weight is 220+ g, hence not soldered (is it good news?) I did not know that the display itself was clamped. This sure can account for the last digit missing completely, but could it explain the ghosting on the others? I _carefully_ bent the case, but no luck.
@Michael: I'll try improving the contacts. The end of your answer is what I feared. I don't have a spare LED array --only on working calculators... Perhaps on a Woodstock, but I guess it's not the same.
However, a temporary exchange might help.
Yet, don't you like my transistor story? I thought it was pretty consistent with the technology... I have found the hpcc site which has some diagrams, but not the 34C, only the 33C: do you think I could use it instead? I'd like to find out if the display driving is performed by a single chip, or by separate components.
Daniel
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