IR Board Fried?

[JCODER]

we accidently reversed the positive and negative wires on the IR board(pins 1 & 3). Unfortuantely we had a burning smell and when we tried it the correct way we get no response from our board. I think the board is fried....but this also seems like a common mistake and I thought the board would have protection against this. Please help!!!!!!!

[robbrad]

What exactly are you looking for? You need to include a question. Are you looking for a new one, or how to repair yours?

[JCODER]

well it seems to us that our only option is to get a new one which no one seems to know how to do. If you know of a way to find how to repair it, it would be appreciated.

[Phalanx]

Originally Posted by JCODER

we accidently reversed the positive and negative wires on the IR board(pins 1 & 3). Unfortuantely we had a burning smell and when we tried it the correct way we get no response from our board. I think the board is fried....but this also seems like a common mistake and I thought the board would have protection against this. Please help!!!!!!!

We too had a burning smell and got no response. We used a 9V battery.
We confirmed and doubled checked that the wiring was done correctly.
I did the wiring myself and had it doubled check by another Mentor.
We did find the the voltage regulator was lose when we first smelled it.

So we are assume the voltage regulator is fried, faulty or installed faulty.

SO if anyone knows how to get a replacement, or repair let us know.

[sayso_411]

Seems like the IR Board is not available online so the only other option i guess is to try to fix it somehow
sorry i tried to find one for u
other option could be to try to contact FIRST and get a replacement

[Pat Fairbank]

We looked into acquiring replacement/extra IR boards.

The word from FIRST is that their supply of boards is limited. Seems that they are going to first take care of the teams whose boards were genuinely defective when they got them. After that, if there are enough remaining, they are going to consider putting them up for purchase.

[keen101]

Just get a new 5V regulator.


I can't tell you where to get it. I just used an old one from another old board.

Try and get a L805 if you can, if you can't... improvise.


I have already repaired our board twice. Both times it was because the 5V regulator died. It's too bad FIRST did not design the board with a diode to protect it from accidental reversed polarity.

[JCODER]

Thanks everyone for their comments
We will be getting a new 5v regulator

[popo308]

We burnt are board up pretty bad and we contacted FIRST support through E-Mail and got a new one no problem...

[Bochek]

The same thing happend to us, a quick trip to the electrical supply shop and for $1.40 Canadian we got 2 new 5V regulators A quick solder job (sarcastic) and it works perfect.

- Bochek

[Klake]

Yeah, your safest bet is to add another 5V regulator (make sure it is the same type or a generic brand of it) and if you want to, see if you can cut a trace and insert a diode to protect from reverse voltages (check the flow chart)

[Phalanx]

Well we just replaced the voltage regulator today.

And the IR Board still doesn't work.
I'm going to assume that this board never worked.

[popo308]

Originally Posted by Phalanx

Well we just replaced the voltage regulator today.

And the IR Board still doesn't work.
I'm going to assume that this board never worked.

Contact FIRST you can get a new one.

[Blair Frank]

Did you get a new IR board after emailing FIRST? We've emailed them at least twice and haven't heard a peep. Is there some super-secret email address we don't know about, or more likely, haven't found?

Thanks.
-Blair

[Jonathan S]

Hi, my name is Jonathan and I am from team 1660 the Harlem Knights. The same thing happened to our IR board to. But we got a solution. Our voltage regulator was reducing 9volts in to 5volts. But no signal was being sent. So we diagnosed that the voltage regulator was electricly burned. So we went online and searched for voltage regulators and we found it at www.digikey.com. We found a Regulator TO-92. The part number is 296-1365-ND.

http://search.digikey.com/scripts/Dk...keywords=78l05

If you have any questions email me at johnnyrocksursocks@gmail.com