HP15C displays gibberish. Is it broken?

[sebi]

(10-03-2020 05:16 PM)Valentin Albillo Wrote:  This person says that he/she has "the opportunity to buy" the calc so I take it he/she doesn't have the calc available to perform the manipulations you and Maximilian suggest.

Indeed, I have to possibility to buy it "as it is" based on this picture only, without having the possibility to test it first.
I doubt the vendor wants to make any manipulations for me as he is a secondhand goods dealer...
I might ask but depending on the result I won't be able to negotiate the price anymore.

BTW: I am a "he", I am Sébastien. Nice to meet you.

I would like to know my chances of being capable of fixing it.
I am not that bad at fixing electronics stuff but I have no experience with such calculators.