Question about Texas Instruments TI-84 Plus Silver Edition Graphic Calculator

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Dear Sir/madam: The wire coil that holds batteries in place is corroded and one of them is broken. The calculator works when I put the battery in and the broken coil touches the potion left in the body of the calculator. However, I am afraid that the connection will break during my exam and I shall loose data. Is there a way of changing the coil with another that I have in my old calculator? Thanks, Talat

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As long as there is a small metallic part fixed in calculator body you can find a workaround. Cut a piece of aluminum foil or other thin sheet of metal that you can easily fold and stuff it between the battery and the remnant of the coil. Do not let it touch neighboring batteries.
If the broken coil has enough wire left in it you can also stretch it a bit to improve contact.

Posted on Sep 02, 2010

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Hi, Madan and the usual suspects are:
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1 Answer

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Hi, Greg bad connection or bad coil otherwise the usual suspects are:
1. Fuel tank empty.
2. Fuel supply valve/petcock turned off.
3. Fouled spark plugs.
4. Engine flooded as a result of overuse of the enricher.
5. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
6. Fuel valve/petcock or filter clogged.
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8. Loose or corroded wire connection at the coil, battery or plug between ignition sensor and module.
9. Spark plug cables in bad condition and shorting, cable connections loose, or connected to the wrong cylinders.
10. Ignition timing incorrect due to a faulty ignition coil, ignition module or sensors (MAP, CMP, CKP, O2 and/or BAS).
11. Security alarm needs a reset.
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I have a 49cc miniquad i put on a new carb, i got spark, i have good compression, put in fresh gaz with good oil/gaz ratio and still no start please help


Hi Pat, and the usual suspects are:
1. Fuel tank empty.
2. Fuel supply valve/petcock turned off.
3. Fouled spark plugs.
4. Engine flooded as a result of over use of enrichner.
5. Vacuum hose to fuel supply valve/petcock disconnected, broken, cracked, or pinched.
6. Fuel valve/petcock or filter clogged.
7. Discharged battery, loose, corroded or broken battery terminal connections especially the "NEGATIVE" cable inside the harness at both ends.
8. Loose or corroded wire connection at the coil, battery or plug between ignition sensor and module.
9. Spark plug cables in bad condition and shorting, cable connections loose, or connected to the wrong cylinders.
10. Ignition timing incorrect due to faulty ignition coil, ignition module or sensors (MAP, CMP CKP and/or BAS).
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1 Answer

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Hi, Angiep10 and the usual suspects are:
1. Fuel tank empty.
2. Fuel supply valve/petcock turned off.
3. Fouled spark plugs.
4. Engine flooded as a result of overuse of the enricher.
5. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
6. Fuel valve/petcock or filter clogged.
7. Discharged battery, check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
8. Loose or corroded wire connection at the coil, battery or plug between ignition sensor and module.
9. Spark plug cables in bad condition and shorting, cable connections loose, or connected to the wrong cylinders.
10. Ignition timing incorrect due to a faulty ignition coil, ignition module or sensors (MAP, CMP, CKP, O2 and/or BAS).
11. Security alarm needs a reset.
For more information about your issue, please visit the websites below. Good luck and have a nice day.
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Fuel tank empty
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Battery terminal connections loose or corroded
Leaking fuel injector(s) faulty fuel pump, pressure regulator
Broken or stripped timing belt
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1 Answer

I can't seem to get the correct batteries for my Texas Instruments TI-84 Plus Calculator...can any AAA 1.5v battery use in it? I tried some duracell of that same type and they didn't work


All the AAA batteries whether non-rechargeable alkaline (Duracell, Energizer, Rayovac, Varta, Maxell, Panasonic, Sony, Sanyo, etc) will do. Each of these types of batteries has a voltage of 1.5V
You can also use rechargeable NiCd (Nickel-Cadmium) or NiMH (Nickel-Metal Hydride) 1.2V AAA. However TI Instruments say that under no circumstances should one use rechargeable batteries.

The trivial possible reasons why the the Duracell did not work are:
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  2. The electrical terminals may be broken or dirty or corroded by a previous acid leak.---Clean the terminal even if they appear shiny. The eraser tip of a pencil should be good to rub away any dirt.
  3. You did not place them correctly: Wrong polarity. This is a very common mistake (I know from my own experience).

Sep 12, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

Broken


Here are some steps to perform in the order they are presented. The point A may solve your problem. If it does not, do the others. Please read the post till the end.

A Try this before thinking of repairs.
  1. Push the ON button.
  2. Even if you see nothing, press the [2nd] key and release it.
  3. Press and HOLD the UpArrow key until the screen darkens.
  4. You may have to keep pressing UpArrow for a little while before you see anything.
B If that does not work
  1. Remove one of the AAA batteries.
  2. Press and hold the [CLEAR] key.
  3. While holding [CLEAR], reinsert the AAA battery and then
  4. turn the calculator on.
  5. The calculator should display the message "RAM Cleared".
  6. Release the [CLEAR] key and then press it one more time to remove the message "RAM Cleared".
C. Third option
  1. Remove batteries including the backup battery for 5minutes.
  2. After the 5 minute period, reinsert all of the batteries and
  3. turn the calculator on.
  4. Adjust the contrast if necessary.
D. Last option

The last option requires the reinstallation of the system. So to use it you must download the TIConnect 1.6 software from education.ti.com. You must have the TI USB SilverLink or the TI Black serial cable ready.You must be connected to the Internet.
  1. Remove one of the AAA batteries.
  2. Press and hold the [DEL] key.
  3. While holding [DEL], reinsert the AAA battery and then
  4. turn the calculator on.
  5. The calculator should display "Waiting...Please install calculator software now".
  6. Connect the TI Connectivity cable between the computer and the calculator.
  7. Click on Start >> Programs >> TI Tools >> TI Connect >> TI OS Downloader.
  8. Follow the on-screen directions to reinstall the calculator's OS.
If the message "Error! Press any key to turn unit off. Then turn unit back on." appears on the graphing calculator, quickly, remove one battery from the calculator and reinstall it while the transfer is taking place.

You have several ways to connect the calculator
  • Serial Black cable that used to ship with the TI 83 Plus. It connects to a serial port on a computer and to the I/O port on the calculator. It requires the Graph Link software available on the TI web site (Downloads, Software and Apps, Connectivity)
  • USB Silver Link cable. It connects a USB port on the computer to the the I/O port on the calculator. It requires the TI connectivity software, also available on the TI Web site.
  • A USB mini A to mini B cable to connect two units.
  • An I/O cable to connect two calculators through their I/O ports.

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2 Answers

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1 Answer

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Hi, Pki17308 and the usual suspects are:
1. Fuel tank empty.
2. Fuel supply valve/petcock turned off.
3. Fouled spark plugs.
4. Engine flooded as a result of overuse of the enricher.
5. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
6. Fuel valve/petcock or filter clogged.
7. Discharged battery, check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
8. Loose or corroded wire connection at the coil, battery or plug between ignition sensor and module.
9. Spark plug cables in bad condition and shorting, cable connections loose, or connected to the wrong cylinders.
10. Ignition timing incorrect due to a faulty ignition coil, ignition module or sensors (MAP, CMP, CKP, O2 and/or BAS).
11. Security alarm needs a reset.
For more information about your issue, please visit the websites below. Good luck and have a nice day.
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2001 2006 BMW R1150R ABS Service Manual Moto Data Project
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1 Answer

My 97 chevy cavalier want start with key


sounds like a bad alternator try this list too 1 Inspect Battery Damaged or faulty battery and/or connections. grey_line.gif 2 Inspect Coil - Ignition Damaged or faulty ignition coil or ignition coil circuit. grey_line.gif 3 Inspect Fuel Filter Clogged or dirty fuel filter grey_line.gif 4 Inspect Fuel Injector Pressure Regulator Faulty fuel injector pressure regulator or circuit. grey_line.gif 5 Inspect Fuel Pump Improperly functioning fuel pump or circuits. grey_line.gif 6 Inspect Wireset Damaged, worn, or deteriorating spark plug or coil wire(s). grey_line.gif 7 Inspect Control Module-Ignition Faulty ignition control module or circuit. grey_line.gif 8 Inspect Solenoid Switch Damaged or faulty solenoid switch or solenoid switch circuit. grey_line.gif 9 Inspect Starter Damaged, worn, defective, or faulty starter or starter related circuit. grey_line.gif 10 Inspect Neutral Safety Switch Damaged or faulty neutral safety swittch or circuit. grey_line.gif 11 Inspect Fuse Corroded, burned, or shorted fuse may be interupting power source. grey_line.gif 12 Inspect Fusible Link Corroded, burned, or shorted fusible link may be interupting power source. grey_line.gif 13 Inspect Battery Cable Corroded, broken or poorly connected battery cable. grey_line.gif 14 Inspect Spark Plug Wire Loom - Performance Improperly adjusted or worn/malfunctioning carburetor. grey_line.gif 15 Inspect Distributor Cap Loose or cracked distributor cap grey_line.gif 16 Inspect Distributor Cap And Rotor Kit Loose, cracked, or worn distributor cap and ignition rotor. grey_line.gif 17 Inspect Fuel System Pressure Incorrect fuel pressure being delivered to carburetor or fuel injection system. grey_line.gif 18 Inspect Fuel Injector Plugged, dirty or poorly connected fuel injector. grey_line.gif 19 Inspect Ignition Switch Worn, damaged or faulty ignition switch or circuit. grey_line.gif 20 Inspect Spark Plug Fouled, damaged or broken spark plug(s). grey_line.gif 21 Inspect Belt Incorrectly routed, adjusted(tensioned), missing or worn drive belt(s). grey_line.gif 22 Inspect Timing Belt Slipped or broken timing belt. grey_line.gif 23 Inspect Timing Set Slipped timing chain or worn timing gear(s). grey_line.gif 24 Inspect Fuel Tank Contaminated fuel from rusted or deteriorated fuel tank. grey_line.gif 25 Inspect Ignition Timing Incorrectly adjusted engine timing.

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