Jump to content



Photo
- - - - -

CP400 Display disturbed

cp400 display

  • Please log in to reply
5 replies to this topic

#1 kassio

kassio

    Newbie

  • Members
  • Pip
  • 3 posts

  • Calculators:
    CP400

Posted 11 January 2020 - 08:30 PM

Hi there,

 

when I switched my Classpad II cp400 on again after a while, the display only showed lines. Also a reset or the exhaustion of the batteries did not help. Does anyone have an idea? Here' how it looks like as video and as picture.

 

The YT-Video v=QuiJxEGkFHA shows a repair with the hair dryer. But probably my device has another problem?

 

Does anyboda has an idea how to fix it?

 

Tnx in advance,

kassio



#2 sentaro21

sentaro21

    Casio Technician

  • Members
  • PipPipPipPipPipPip
  • 369 posts
  • Gender:Male
  • Location:JAPAN

  • Calculators:
    FX-603P fx-4800P fx-5800P
    CFX-9850GC PLUS
    fx-9860G
    fx-9860GII
    fx-9860GII-2
    fx-9860GII-2 SD
    fx-CG10
    fx-CG20
    fx-CG50
    HP-Prime
    HP 50G
    TI-Nspire CX CAS
    TI-84+CE

Posted 12 January 2020 - 10:49 AM

It is probably malfunction of the LCD driver LSI or  bad connection between the main board and the LCD unit.
If warranted, I recommend that you submit for maker repair. :)


#3 kassio

kassio

    Newbie

  • Members
  • Pip
  • 3 posts

  • Calculators:
    CP400

Posted 13 January 2020 - 09:32 PM

Oh, can I take a look inside to check the connection? I tried to get in, but the body seems to be stuck together?! :o 



#4 Krtyski

Krtyski

    Casio Freak

  • Members
  • PipPipPipPip
  • 132 posts
  • Gender:Male
  • Location:Tokyo, Japan
  • Interests:programming, smooth Jazz and 4-wheel driving.

  • Calculators:
    FX-502P, FX-602P, FX-603P,
    fx-4000P, fx-7000G,
    fx-4500P, fx-4800P
    fx-5800P,
    CFX-9850G,
    CFX-9850GC PLUS
    fx-9860G,
    fx-9860G AU,
    fx-9860G Slim
    fx-9860GII SD,
    fx-9860GII-2,
    fx-9860GII-2 SD,
    fx-CG20, fx-CG50,
    fx-CP400
    fx-9860GIII
    fx-9750GIII
    fx-7400GIII

Posted 31 January 2020 - 03:02 AM

If your warranty is still valid, I DO NOT recommend opening and checking inside around which may be a good reason for CASIO to refuse repair at free of charge. 

 

Please be careful!



#5 kassio

kassio

    Newbie

  • Members
  • Pip
  • 3 posts

  • Calculators:
    CP400

Posted 31 January 2020 - 07:58 PM

If your warranty is still valid, I DO NOT recommend opening and checking inside around which may be a good reason for CASIO to refuse repair at free of charge. 

 

Please be careful!

Thanks for your hint. But it's over already. Nothing to loose -_-  ...



#6 Krtyski

Krtyski

    Casio Freak

  • Members
  • PipPipPipPip
  • 132 posts
  • Gender:Male
  • Location:Tokyo, Japan
  • Interests:programming, smooth Jazz and 4-wheel driving.

  • Calculators:
    FX-502P, FX-602P, FX-603P,
    fx-4000P, fx-7000G,
    fx-4500P, fx-4800P
    fx-5800P,
    CFX-9850G,
    CFX-9850GC PLUS
    fx-9860G,
    fx-9860G AU,
    fx-9860G Slim
    fx-9860GII SD,
    fx-9860GII-2,
    fx-9860GII-2 SD,
    fx-CG20, fx-CG50,
    fx-CP400
    fx-9860GIII
    fx-9750GIII
    fx-7400GIII

Posted 05 February 2020 - 12:26 AM

Hi Kassio

 

OK, now you can do whatever you want.

Just for sure, heating up and pushing may be good to recover adhesion of flexible flat tape (from LCD) to main board.

Please do not give heat too much.

 

Good luck.






0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users