510 resistor missing alltogether

My compass stopped working and I found the fix to it on this forum. I removed the console and found the circuit board only to find one of my 510 resistors is completely missing. I did a search for a new resistor and they are rated for different wattages. How do I know which one is the right one? Does anyone have the answer to that? Thanks

 

No doubt others will chime in here. If there is 12 vdc running through the resistor, the current would be 12/510 = ~0.024 amps...(current = volts/resistance).
Then watts can be figured as....watts = voltage x current
In your case 12vdc x 0.024 amps = 0.288 watts

half watt would be good starting point

 

Thanks for your help. I have a 1/2 watt resistor on order; that appears to be what I need.

 

No problem, let me know if it works out.

 

this happened to me too, did you fix it?

 

Actually it is not a 510 ohm resistor.

SMD (surface mount) resistors are noted in the first 2 digits as a value, and the last one is

x10^(last digit)

So 510 would be 51x(10^0) or 51 ohms.

Assuming there is 12 volts running thru that resistor for current calculation would be a big mistake as well as, depending on the circuit, there could be a ton of different voltages running thru it. Maybe even diff voltages at different temps or compass directions.

It is not a very high power resistor though. which you can tell from looking at it.

If you ordered a 51 ohm half watt resistor you'd be safe enough.

Actually that is almost certainly what is causing his issue. The 510 resistor there is well known here to cause the display not to work. Usually its just badly soldered, but in my case it was totally desoldered on one side, and barely holding on to the other, so I can see how it would be missing.

I'm sure if you put a 51 ohm resistor in there, it will work just fine.

 

^^ correct 51 ohms.

mine was almost missing. it was turned up 90 degrees, pointed straight up. did you look around in the console? couldnt have gone far.

i had my friend really solder it in. he had to turn it the other way to get a good weld. 510# facing down.

 

Local electrionic repair shop replaced 1/2 watt resistor and re-soldered companion resistor - $18.00 fix. Compass is working great.

 

I'm in the same boat, my 510 is missing also. Where did you order yours from? Part#?

I've googled the description of the resistor, but I get a couple of different results, and I'm not sure which one is correct.

For instance...part of the "description" 1210 or 2010 SMD..."special features"=anti-surge or field is left blank..."temp coefficient"= ±200ppm/°C or -400/ +150ppm/°C.

 

i took out my 510 resistors(one fell off) and put in 2 51 ohm resistors. bent the wires at the resistor and soldered each end of the metal wires to the spots where the 510's were soldered to the board. works great. i got a whole pack of the 510 resistors at fry's for a couple bucks. if you live in the seattle area i can do the fix for you....i got a bunch of extra resistors.

 

by the way, the resistors are 1/4 watt 51ohm. the color in order are green stripe, red stripe, black stripe, and on the opposite end is a red stripe. shoot, i could even mail a couple extras in the mail if you are not in the seattle area........im never gonna use the others. ive got 23 of em.

 

The watt value is the rating of how much current it can carry. As long as you get the Ohm rating right, you won't kill anything. Too small a watt rating and the resistor won't last long, too high is overkill, but won't effect anything. Too high will probably be too large, though.

 

lol...already did "the shake and look for". I'm thinking it fell out of the console someplace when I pulled the headliner for the deadening project. It's probably in the yard or in the dump(where the contents of my shop vac are).

Wish I was in the Seattle area...I hear the weather is a lot cooler than it is here in Texas...

 

Do you have any more? I am in Colorado and could use one!! Or any idea where I could get one? Not even sure how to search for that. Tried "510 resistor" but doesn't really bring anything up that looks correct.

Thanks

 

Can anyone tell me where I can get an extra 510, I also somehow lost one and really don't feel like getting suckered by toyota anymore...

 

Tons of places sell resistors. Maybe a local radio shack, that guy said frys, etc.

They cost almost nothing, so ordering them online will cost way more in shipping than what the resistors cost.

If you're totally stuck here is digikey.

http://search.digikey.com/us/en/products/CFR-25JB-51R/51QBK-ND/2406

41 cents for 5!

Shipping will probably be like ten bucks, but its either next day or day after, and digikey is a fantastic company.

These are not like the originals, they are through-hole resistors you will just need to solder to the pads where the missing one was, like the guy above did.

Good luck!

 

Just in case you lost one,,,,,,,,,
http://www.ebay.com/itm/281900618235?_trksid=p2055119.m1438.l2649&ssPageName=STRK:MEBIDX:IT