I need help with a TI-83 + that has lines / dots on screen

og style · Newbie Joined: 27 Jun 2012 Posts: 6

I am having a problem with my 83 +. When I turn it on I have lines and dots on the screen. The issue gets worse when I try to use it. The images is fine when I hold down the DEL button and put the last battery in. I did a firmware update and it did not fix the problem. Does anyone have any idea on how to fix this?

This is the image I get when I try to use the it.
http://img228.imageshack.us/img228/9171/imag0157ud.jpg

This is the image I get when I hold the DEL button and put the battery in.
http://img542.imageshack.us/img542/2069/imag0158g.jpg

keoni29 · Advanced Newbie Joined: 18 Feb 2012 Posts: 41

Well... do what it told you to do: Re-install the OS Smile

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tifreak8x · Guru Joined: 16 Mar 2005 Posts: 9060 Location: Sol System

KermMartian and BrandonW knows a lot about the hardware of the calculator, once one of them can get on, I'm sure they'll have some suggestions for you to try.
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Projects: AOD Series: 70% | FFME: 80% | Pokemon: 18% | RPGSK: 60% | Star Trek: 70% | Star Trek 83+: 40% | TI-City: 5%

Look here for Assembly Resources.

Ashbad · Posted: 13 Jul 2012 07:36:03 am Post subject:

og style · Newbie Joined: 27 Jun 2012 Posts: 6

I did reinstall the OS, it did not fix it. I tried to resolder the ribbon cable & that didn't help. I will wait to see what the other people say.

thanks

KermMartian · Posted: 13 Jul 2012 10:47:59 am Post subject:

This is classic LCD ribbon failure, unfortunately. I have a news article describing the process of repairing this here: http://www.cemetech.net/news.php?id=418 . Luckily, you have a TI-83+ rather than a TI-84+/SE, so the problem is actually repairable if you (or someone you know) has a very steady hand with soldering. Also, welcome to Cemetech! Please Introduce Yourself, and also feel free to chat with us in the SAX sidebar.
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og style · Newbie Joined: 27 Jun 2012 Posts: 6

thanks for the help. I replaced that ribbon cable & it works fine now. thanks again.

tifreak8x · Guru Joined: 16 Mar 2005 Posts: 9060 Location: Sol System

Glad you were able to find the help you needed. Smile

flyingfisch · Posted: 13 Jul 2012 12:30:08 pm Post subject:

Hmm... funny, never heard of this happening to a casio calc. (I am not being funny, I really have not heard of hardware problems on casio calcs. Besides my prizm problem, of course. But on the 9860... never. )
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og style · Newbie Joined: 27 Jun 2012 Posts: 6

I will stick around. Everyone has been so helpful, and this seems to be the best site for calculators.

Thanks

KermMartian · Posted: 15 Jul 2012 04:27:30 pm Post subject:

parserp · Posted: 15 Jul 2012 09:37:12 pm Post subject:

KermMartian · Posted: 15 Jul 2012 10:52:42 pm Post subject:

og style · Newbie Joined: 27 Jun 2012 Posts: 6

It's not my best work. When you have a 5 year old and 15 minutes, you make it happen.

http://imageshack.us/photo/my-images/580/imag0177d.jpg/

KermMartian · Posted: 16 Jul 2012 10:01:28 pm Post subject:

og style · Newbie Joined: 27 Jun 2012 Posts: 6

I don't know how to tell the year. At the end of the serial number it says s-1204e.
Do I need to get info off the PCB?

KermMartian · Posted: 18 Jul 2012 06:37:51 am Post subject: