Question about Texas Instruments Voyage 200 Calculator

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Blank vertical lines are appearing on the screen.

My texas instruments voyage 200 was perfect the year i used..
then suddently i saw 2 vertical blank lines appearing on my screen..
after one more year, i have around 30 blank lines that are hiding what i write on it.
ANY HELP TO TAKE THEM OFF??

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  • Anonymous Jan 07, 2008

    there are lines on my ti89 that block the stuffs i input.

  • duca_87 Jan 08, 2008

    I also have about 10 blank lines on the screen. I beleive it is a loose connection, becuase at different occurances, different lines are missing. If I push a little on the screen, sometimes they reappear. (Maybe some ribbon cable?)

  • Anonymous Jun 28, 2008

    vertical lines on the screen

  • Marvin Ray B Oct 18, 2008

    I have two voyage 200's they both have those lines too.

  • Melon00 Oct 23, 2008

    Mine has the verticle lines as well. They appear on and off in different spots. I talked to TI, and they wanted like $100 to fix it. I went to Radio Shack, and they wanted like $120 to fix it. I would like to know if there is a simple solution to this issue, such as cleaning or re-soldering it.

  • Anonymous Dec 16, 2008

    in my ti V 200 i have white lines. i don't know where to replace the screen.

  • Anonymous Mar 01, 2009

    10 vertical lines on screen as well happened with in a year, but you know no company will stand behind there product.

  • Anonymous Mar 05, 2009

    I have a same problem. So I opened it up and it looks like connector from the screen to board has contact issues, I am not sure how to fix it because this tape kind of connector is glued to the board. If someone knows how to clean the connector and re glue it let me know!

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Hi, and sorry for my english !
Maybe the LCD driver voltage is wrong or noisy. I had the same problem: some vertical lines (not constant), pulsing contrast after powerup, pixel crosstalk, sometimes no screen

Solution: Try to replace the LCD power negative voltage buffer capacitor.
In my hardware version it is in the middle of the two T6B07 column driver IC (U3&U4) on the right side. Colored black, electrolytic type and the Value is : 10uF/25V. Chage it to around the same type.
There is enought space, so you can use a small sized non smd type capacitor. Be care of the polarity.

I hope it will help... ;)

Greetings from Hungary!

Posted on Mar 23, 2009

  • zerrick_k Nov 03, 2010

    My calculator has 10 vertical lines when the contrast is turned all the way up, and 12-13 lines when the contrast is set to a normal level. So, I tried the solution suggested by Frankie_01. When I opened up my calculator, the location he described had markings and pads for a capacitor, but there wasn't one there.

    Since he gave some specifications as to what type could be there, i went ahead and soldered the type and size he suggested. My calculator still turned on and everything worked, but the lines were still there, so there was no improvement with or without the capacitor in my case.

    I also called TI. They said they would send me a replacement, refurbished unit for $100. At this point, I may go that route, just not during school because I'm not sure what the turnaround time is going to be and I use my calculator for the majority of my classes this year.

  • carlos2020 Feb 25, 2011

    the problem isnt in the capacitor, the problem is the flex that connect lcd to mainboard, the big problem is that you cant get on it, horizontal lines are easy to solve, only need a hot iron of low power, 14watts max and pass over the flex, but vertical lines are in upper flex behind lcd and to get it you need to take the left flex(horizontal lines) and you cant test while "solder it" because display gets all white and you cant know which lines are bad connected

    i hope that all understand what i´m trying to say

    regards for Portugal

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I can't be sure... but that problem seems to be very common to this calculator; and I doubt that a capacitor would go bad on all the calculators.

There was a built-in obsolescence to these calculators because they were using rubber impregnated with carbon to connect the barely discernible pads on the glass to the circuit board. I can't prove, yet, that this is the problem - because I don't yet have one... but I suspect that that is what is happening. The rubber dries out, and as the rubber dries out the contact with the screen goes away.

I would guess that every calculator of this type will eventually be that way. Look at E-Bay and you will see that they are selling them at lots of 5 for $99, all with that problem. And, the ones which don't have the problem are going for $200.

Well, I wouldn't expect that to last long. The $200 will probably have missing lines in a few years, too.

I don't think any capacitor is the problem. Capacitors don't all go bad at once on every calculator ever manufactured.

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Posted on Mar 25, 2008

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