Question about Texas Instruments TI-85 Calculator

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Dusty TI-85 screen

My TI-85 is ancient (approx. 15 yrs old) and has some dust between the LCD and the protective cover. What's the best way to clean out that dust?

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Take a box cutter blade, use it to lift up the plastic protective screen cover, wipe it clean, then press the screen down again

Posted on Oct 10, 2009

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Remove the battery, than wash under cold watter,and blow it out with compressed air. make sure there is no back up battery. let it dry for about a couple days then it hould be safe to plug the betterys back in.

Posted on Sep 11, 2009

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How To Clean Laptop Screen With Household Products?


<p><b>Cloth</b> - Only use a 100%-cotton cloth that is soft and absorbent, either an old T-shirt, sock, or Turkish towel. Make sure you're not using a cotton/polyester blend that contains stiff filaments which can scratch an LCD's surface.<br /> <p><b>Note:</b> Paper towel or facial tissue should never be used because they contain wood fibers, also hazardous to LCDs, and definitely are not how to clean a laptop screen. Also remember to never use a dry cloth on your LCD monitor. Dust particles moved around with even the softest cloth could create scratches.<br /> <p><b>Liquid</b> - The best way to get a really clean laptop screen is to use isopropyl alcohol, containing 91% pure alcohol, with 9% de-ionized water, readily available at any drugstore or supermarket. It's perfectly safe for use on electronic equipment and LCD screens because it evaporates quickly and does not leave a residue. The lesser strength isopropyl alcohol 70% is used primarily for massage and muscle pain.<br /> <p>A 1:1 solution of distilled water and isopropyl alcohol 91% can be used to clean a laptop screen that is not heavily dusty or soiled with greasy fingerprints. Vinegar and distilled water in a 1:1 solution can also be used for light cleaning.<br /> <p>Certain household liquids should never be used on LCD's. These include ammonia and tap or mineral water, which leave permanent white spots and streaks. Household window cleaners should be avoided because they might contain ammonia, or other harmful chemicals which also can cause irreparable damage.<br /> <p>Another caution is to never spray a solution directly onto an LCD. Always spray the liquid on a cloth, only enough to moisten it slightly, and then apply to the screen in gentle, counter-clockwise motions.<br /> <p><b>How To Clean Laptop Screen With Special Cleaners?</b><br /> <p><b>Kits</b> - Micro-fiber cloths and anti-static solutions are packaged together and sold at office supply or electronics stores. The special solution leaves a slight film that protects a clean laptop screen, repels dust and smudges, and keeps it clean longer. The liquid should be sprayed onto the cloth, which only needs to be slightly wet, not dripping, when applied to the screen. There's a slight disadvantage to these kits. Certain solutions cause streaking, so it's best to do a little research before investing in this method.<br /> <p><b>Micro-fiber</b> cloths can be purchased separately and used with isopropyl alcohol 91%, and/or distilled water. Whether using the complete kit or the cloths alone, make sure the packaging designates the product is ''safe for laptops and LCD screens."<br /> <p><b>Anti-Static Cloths</b> - Many computer manufacturers, when asked how to clean a laptop screen, recommend anti-static cloths made specifically for cleaning without liquid of any kind. These cloths are formulated for advanced optical technology and are considered the best way to clean, polish and protect a laptop screen. Even greasy fingerprints can be buffed off using these cloths, readily available at electronics or office supply stores.<br /> <p>Similar cloths are made for cleaning camera or eyeglass lenses, and these can be found at any drugstore, optometrist or camera shop. Anti-static cloths are the quickest and easiest solution when you want the most advanced and easiest method to both protect and clean a laptop screen.<br /> <p>The above options offer a variety of easy and safe ways to care for your LCD monitor. With simple maintenance on a regular basis, a laptop screen will last for many years.<br />

on Mar 14, 2011 | Computers & Internet

1 Answer

We need to clean our Sony KP-53N77. We have some spider webs inside the protective screen and our color is a little fuzzy. We have never had the mirrors cleaned. How do we access the areas to clean and...


Remove the back hardboard cover by removing all the screws and lifting the cover up and toward you.

Mirror will be above but usually doesnt get dusty. Try not to touch it if you can. Same with back of screen. If you have a spider web just use a soft dry cloth to wipe it away.

You will likely find the upward facing lamp lenses covered in dust. Clean these with a soft cloth moistened with glasses cleaning solution. Glass cleaner works too.

Mar 20, 2011 | Sony KP-53N77 TV

1 Answer

Hi, My name is Ana and I'm still using my old TI-85 calculator for abt 13 yrs. The thing is last yr the screen started having the big black spot inside and covering almost entire scree. The calculator...


Hi
I fix all the TI calculators but i am in NY
its very hard to find parts for this model
it wil be better for you to buy a new
or used calculator in good condition
if you still want to fix the Calculator let me know

ecrdn@yahoo.com

Jack

Oct 11, 2010 | Texas Instruments TI-85 Calculator

2 Answers

Would not power up.


Having gone over a month with no response, I assume this is no longer a problem.

Apr 26, 2010 | Texas Instruments TI-85 Calculator

1 Answer

Phillips 52" tv


It might be simply a matter of having someone adjust the magnetic rings on the yoke of your picture tube to refocus it - a lost art.

A 15 minute job for a seasoned veteran, perhaps, but expect to pay a minimum charge of 1 hour's labour, at $85-90 CDN.

Sep 18, 2008 | Philips Magnavox 27MS343S 27" TV

2 Answers

Spots on the screen


The dust is on the lcd located inside the optical block. It requires quite an extensive tear down and if you're not at the minimum a CET don't attempt this one yourself... Most shops won't even do this cleaning in the home and any repuatble shop that does it has a clean room they will put it in to do the work..
A single speck of dust no larger than 25 microns on the lcd can shadow in the picture. To give you some idea how small that is a blood cell is 7 microns wide...
Bill

Feb 03, 2008 | Sony Grand WEGA KDF-42WE655 42" Rear...

1 Answer

TI-85 Display Has Missing Lines


have u ever modded it? it can (and probably will)damage the screen (graphics driver)

Oct 26, 2007 | Texas Instruments TI-85 Calculator

3 Answers

TI 85 Screen is too dark


Press the 2nd key and the down arrow to lighten the screen.

Oct 06, 2007 | Texas Instruments TI-85 Calculator

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