Author Topic: CFX-9850GB plus - Broken screen  (Read 6383 times)

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Offline Keoni29

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Re: CFX-9850GB plus - Broken screen
« Reply #15 on: August 07, 2013, 10:00:09 am »
Might not fit. Maybe something a bit smaller.
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Offline TIfanx1999

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Re: CFX-9850GB plus - Broken screen
« Reply #16 on: August 07, 2013, 10:02:44 am »
At least everyone knows that they should never buy a casio CFX-9850GB plus with horizontal missing lines.
Or just cope with it.
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Offline Keoni29

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Re: CFX-9850GB plus - Broken screen
« Reply #17 on: August 07, 2013, 10:04:48 am »
A 4x4 membrane keypad matrix costs more than €4, so I still got a good deal :P
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Offline Jonius7

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Re: CFX-9850GB plus - Broken screen
« Reply #18 on: August 12, 2013, 10:23:56 am »
Ouch, what's the state of the screen now? From what it sounds, desoldering did nothing to make it better (might have made the screen even worse!)

Btw I have the exact model Casio CFX-9850GB+ (white version).
One of my few graphing calculators.
Programmed some CASIO Basic in the past
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Offline DJ Omnimaga

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Re: Re: CFX-9850GB plus - Broken screen
« Reply #19 on: August 12, 2013, 12:34:41 pm »
It sucks how they did it, preventing you from fixing the calc. Otherwise with a normal screen connector apparently it's really easy to fix. Is it true that sometimes it's just because the connection is dirty?

Offline Keoni29

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Re: CFX-9850GB plus - Broken screen
« Reply #20 on: August 12, 2013, 03:41:59 pm »
Ouch, what's the state of the screen now? From what it sounds, desoldering did nothing to make it better (might have made the screen even worse!)

Btw I have the exact model Casio CFX-9850GB+ (white version).
One of my few graphing calculators.
Ribbon is destroyed. Screen entirely dead.

It sucks how they did it, preventing you from fixing the calc. Otherwise with a normal screen connector apparently it's really easy to fix. Is it true that sometimes it's just because the connection is dirty?
The connection cannot be dirty because the ribbon cable is soldered directly to the board, but the solder can dry a bit and crack thus making a bad connection.

So when you get a calc and see there are horizontal lines missing on the screen: it's not an easy fix. It is impossible to service with a normal soldering iron. Do not attempt to fix it because it will definitely brick your calculator.
« Last Edit: August 12, 2013, 03:42:32 pm by Keoni29 »
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