It Doesn't Turn On!

IntrnalDsK · Member Joined: 23 Jun 2003 Posts: 103

About half a year ago, I was trying to get my TI83+ to work in a wall outlet. It was the wrong voltage, and now the calculator doesn't turn on! is there something inside that calculator that I could replace (without spending $100)? It is not the contrast, and I have tried everything that I know possible, ON+Del, ON+Clear, take all batteries out, get new batteries... :(

Quite similar to my avatar Razz

gorchy · Newbie Joined: 30 May 2003 Posts: 19

i think you damaged a condensator (is that spelt right Neutral

) but it could be hard to find the damaged device. if you haven´t damaged the screen you´re luck because it should be the most expensive device in the calc

NETWizz · Posted: 13 Jul 2003 06:56:59 pm Post subject:

You have probably fried it.

Next time, use a step down transformer to step down to 6v.

Then you will need to filter it with a capacitor, inductor, and zener voltage regulator.

If you do not, you will fry your calc.

BTW, why not use batteries?

gorchy · Newbie Joined: 30 May 2003 Posts: 19

if the AAA batteries are to expensive you could use a battery-extensions shown on my site or use an alternative power-supply instead of the batteries.
there are very cheap and easy to use ICs available to get a voltage of 5 or 6V

NETWizz · Posted: 14 Jul 2003 04:20:36 am Post subject:

Either that, or you could use rechargables.

Either way, AAA's are relativly cheap

especially when compared to the price of a calculator.

Arcane Wizard · Posted: 14 Jul 2003 09:27:59 am Post subject:

I use rechargeables from my cordless mouse, which acts as a rechager for the batteries.

I used to switch the batteries between the calc and the mouse all the time but then I found out the non-recharables wouldn't be charged by the mouse (so they won't blow up or anything) so now I only put them in the mouse them when they need to be charged.

Spyderbyte · Advanced Member Joined: 29 May 2003 Posts: 372

Adm.Wiggin · Posted: 14 Jul 2003 11:26:31 am Post subject:

ya, that was pretty confusing...

Arcane Wizard · Posted: 14 Jul 2003 07:14:58 pm Post subject:

Hehe, it has a neet little wire that is attached to an adapter so it can charge up the batteries when it's not being used. So you plug it in to charge up when you go to sleep or something and then unplug it when you have to use the mouse for something and it will run on the batteries.

Since I have empty batteries in it (from my calc) it get's all the power from the adapter and I can keep the recharable batteries in my calc. When my calc needs to have it's brightness set to 9 to see anything i put them in the mouse for a night and then put them back in my calc again. I still have to keep batteries in the mouse so the circuit won't be interrupted.

So it's not much of a cordless mouse anymore, but it's the best mouse I have ever had (it's even optical, yay) and the wire to the adapter doesn't get in my way so I don't care.

NETWizz · Posted: 15 Jul 2003 01:23:46 am Post subject:

okay, but fyi, it could use inductive charging.

Essentialy, you put AC throuh a coil of wire and you have another coil of wire in the mouse. When the mouse goes over the coil, it will act like a transformer sending energy to the mouse wirelessly.

IntrnalDsK · Member Joined: 23 Jun 2003 Posts: 103

Yea, I can put AA in the AAA, but it is kind of excess weight. So you think I can just get this extra part?

Adm.Wiggin · Posted: 15 Jul 2003 12:20:07 pm Post subject:

i dunno, cause TI doesnt care... maybe! theyed problably charge u an outrageous amount...

IntrnalDsK · Member Joined: 23 Jun 2003 Posts: 103

That's why I hope not to resort to TI. Laughing

NETWizz · Posted: 16 Jul 2003 03:17:59 pm Post subject:

AAA's, AA's, C's, or even D's will work

You will need a fancy battery box, however.

Just connect them the same way you put in the AAA's

If you got your calc to work on D's, you could probably go for 2 years without replacing them, but D's cost twice as much as AA's which would last about a year under severe usage.

Adm.Wiggin · Posted: 17 Jul 2003 11:30:51 am Post subject:

im going to hook my calc upto the wall.... no joke! it will work... i m only sending 4.5 volts to it, so no chance of frying... ive almost got it... just need to talk to my neighbor...

IntrnalDsK · Member Joined: 23 Jun 2003 Posts: 103

Don't forget to ask other people who have done it before Neutral

Don't want to have to buy a new calc

note: The other day, I saw a TI83+ for $10 on EBAY!

Darth Android · Posted: 17 Jul 2003 03:53:39 pm Post subject:

note that the calcs run on DC and the wall is AC. they r different and u could damage ur calc...

IntrnalDsK · Member Joined: 23 Jun 2003 Posts: 103

That was actually the problem I had. I had something AC when it should be about 6 DC.

Darth Android · Posted: 21 Jul 2003 04:14:17 am Post subject:

if it was the wall w/no trans former them it was 120v AC when the calc needed 6v DC, and no, DC is no more powerfull than AC.

Arcane Wizard · Posted: 21 Jul 2003 04:16:49 am Post subject:

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