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The Mode settings determine how entries are interpreted and how answers are displayed on the TI-84 Plus. At first set option full screen and then folow next:If you cannot see anything on the screen, you may need to adjust the graphing TI 84 calculator contrast : 1.To darken the screen, press and release 2nd key, and then press and hold up-arrow key until the display is sufficiently dark. 2. To lighten the screen, press and release 2nd key, and then press and hold down-arrow key until the display is sufficiently light.
The lcd is connected to a PCB with a driver, you can unsolder the LCD pins from the driver board. I think you are able to unsolder the entire board+LCD from the main calculator board, but I haven't tried that.
Your best bet at finding a new LCD would be to buy broken calculators off of ebay.
Even if it were available from TI, the LCD screen is not generally repairable and is either an integrated part of the mainboard (hardwired) or is attached to the mainboard by a ribbon cable. Either way, desoldering and then resoldering is tough even if you own the equipment to do this kind of work. Next option: check eBay for another used calculator.
I suppose they can be replaced. You should contact the TI Consumer Support Department at [email protected] They will be able to tell you where in your area of residence you can have the calculators serviced and how much It will cost you.
I have heard about a Casio program that gives credit towards the purchase of Casio calculators in exchange of TI calculators. Here is the link to the trade-in program. I believe it is worth investigating this. You may end up replacing the calculators at a lower price. Casio calculators are very good and less expensive than the TI. You will be surprised to hear that Casio is the inventor of the LCD screen.
my son dropped his and cracked the screen 2 days ago.Called TI no replacement parts.Spoke to the head of the math dept.at school he also said they have called for repair and no luck. Solution is we have to write a check to the school for $120 since they supply the calculator
does it look something like the example I gave? Anyways, I don't think that it can be fixed. and you can either:
A.) have the screen fixed (approx. $100)
B.) buy a new calculator (approx. $85)
( the monetary figures are approxamate and should not be taken literally, the $85 is at least what I last saw one for @ a Wal-Mart)