Resistor Identification?
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Fleet Mechanic
Joined: Oct 2002
Posts: 1,385
Likes: 1
From: Mercer County, OH
Resistor Identification?
I need to replace a resistor in a controller for a back massager but I'm not sure how to identify it. The resistor is about 3/8" long, about 1/8" in diameter and it's tan in color. The color rings on it are, gold-black-white-orange. I know those markings mean something but I don't know what. I can probably pick one up at Radio Shack but I'd like to know what to ask for. Any electronics gurus here that can help me out? Thanks!
Post Fiend
Joined: Jun 2003
Posts: 5,983
Likes: 2
39 Ohms 5% tolerence and it's actually Orange (3) White (9) and Black (0 zeros). Based on the diameter specified, it's 1/2 watt.
For future reference: Resistor Codes - Transwiki
For future reference: Resistor Codes - Transwiki
Senior User
Joined: Sep 2003
Posts: 184
Likes: 0
From: Ohio
The base color of the resistor is of no importance. From what you describe it sounds like a 1/4 watt resistor. The colored bands indicate a 39 ohm resistor with a tolerance of +/- 5%.
I build electronics components, but am no expert on this. Here is a link that I used for deciphering your info.
4 Band Resistor Color Codes
You can always take it to RadioShack and they can give you the replacement you need.
I build electronics components, but am no expert on this. Here is a link that I used for deciphering your info.
4 Band Resistor Color Codes
You can always take it to RadioShack and they can give you the replacement you need.
Post Fiend
Joined: Jun 2003
Posts: 5,983
Likes: 2
I don't know, it's one of the two. But I'd rather use a half watt in a quarter watt application than the reverse.
The think I want to know is how was he able to diag the problem without knowing how to decode the value.
The think I want to know is how was he able to diag the problem without knowing how to decode the value.
Senior User
Joined: Sep 2003
Posts: 184
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From: Ohio
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Fleet Mechanic
Joined: Oct 2002
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From: Mercer County, OH
Actually it was pretty easy. It was the only one that was black and crispy and smelled like, well you know.
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Cargo Master
Joined: Jan 2004
Posts: 2,512
Likes: 8
From: Cook Forest and Irwin PA
Bad Boys Rape Our Young Girls But Violet Goes Wild
Black Brown Red Orange Yellow Green Blue Violet Gray White
no 4th - 20%, silver - 10% Gold 5% tolerance
as pointed out 39 ohmages. Id use no less than 1 watt tho.
black and crispy indicated it got hot.
now why did it get hot? did the voltage presented climb because a regulator went south? without a schematic or serious ability to read a PCB, you are shooting in the dark...
Black Brown Red Orange Yellow Green Blue Violet Gray White
no 4th - 20%, silver - 10% Gold 5% tolerance
as pointed out 39 ohmages. Id use no less than 1 watt tho.
black and crispy indicated it got hot.
now why did it get hot? did the voltage presented climb because a regulator went south? without a schematic or serious ability to read a PCB, you are shooting in the dark...
Posting Guru
Joined: Jun 2008
Posts: 1,124
Likes: 0
From: Buckeye, AZ
I hate to discourage but so many things affect the components on a printed curcuit board such as a shorted diode, or higher than allowed load, even down to a micro proccesor gone south. I' am really not all that much when it comes to this stuff but I had a electronic controlled washer that was not very old when the curcuit board went out and was told this happened fairly often to these type's of machine.
After a failed attempt (lasted about a week) to repair the board I cross referenced the machine and found it also came out with manual controls to which I changed it out to. All I know for sure is that washer worked for a long time and still worked when I sold it.
After a failed attempt (lasted about a week) to repair the board I cross referenced the machine and found it also came out with manual controls to which I changed it out to. All I know for sure is that washer worked for a long time and still worked when I sold it.
Posting Guru
Joined: Jun 2008
Posts: 1,124
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From: Buckeye, AZ
I hope I did not come across saying you should wire your back massager different then intended, I was letting my brain spill out on the floor over some thing that really didn't have any thing to do with your problem.
All this to agree with what has been said about something else probably causing over load and burning of this resistor. Good luck hope it is still fairly simple and not costly.
All this to agree with what has been said about something else probably causing over load and burning of this resistor. Good luck hope it is still fairly simple and not costly.
Postmaster
Joined: Mar 2003
Posts: 4,513
Likes: 0
From: La Tech University, La
yeah, unlikely that is it is the resistor. chances are that the voltage or amperage jumped in the system by either another resistor going out (normally the bad resistor looks fine, it just fries all the other ones by increasing their load) a diode allowing reverse current, capacitors, regulators, transducers...who knows :P need to see the system, but it is unlikely that a burnt resistor is the original problem (it will need to be replaced though)
Laughing Gas
Joined: Aug 2007
Posts: 1,107
Likes: 32
From: Spokane, WA
Bad Boys Rape Our Young Girls But Violet Goes Wild
Black Brown Red Orange Yellow Green Blue Violet Gray White
no 4th - 20%, silver - 10% Gold 5% tolerance
as pointed out 39 ohmages. Id use no less than 1 watt tho.
black and crispy indicated it got hot.
now why did it get hot? did the voltage presented climb because a regulator went south? without a schematic or serious ability to read a PCB, you are shooting in the dark...
Black Brown Red Orange Yellow Green Blue Violet Gray White
no 4th - 20%, silver - 10% Gold 5% tolerance
as pointed out 39 ohmages. Id use no less than 1 watt tho.
black and crispy indicated it got hot.
now why did it get hot? did the voltage presented climb because a regulator went south? without a schematic or serious ability to read a PCB, you are shooting in the dark...
Bad Black
Boys Brown
Rape Red
Our Orange
Young Yellow
Girls Green
But Blue
Violet Violent
Gives Grey
Willingly White
Get Gold
Some Silver
Now! No Color
Yes, we jarheads were socially repugnant, but we remembered our resistors, dang it!
Logistics Pro
Joined: Nov 2004
Posts: 4,562
Likes: 2
From: Southern MD
The way I learned it was almost the same:
Bad Black
Boys Brown
Rape Red
Our Orange
Young Yellow
Girls Green
But Blue
Violet Violent
Gives Grey
Willingly White
Get Gold
Some Silver
Now! No Color
Yes, we jarheads were socially repugnant, but we remembered our resistors, dang it!
Bad Black
Boys Brown
Rape Red
Our Orange
Young Yellow
Girls Green
But Blue
Violet Violent
Gives Grey
Willingly White
Get Gold
Some Silver
Now! No Color
Yes, we jarheads were socially repugnant, but we remembered our resistors, dang it!
Dragging up old memories, here.
My electronics teacher in High School was a retired Navy E-9.
His rendition was:
Bad = Black = 0
Boys = Brown = 1
Rape = Red = 2
Our = Orange = 3
Young = Yellow = 4
Girls = Green = 5
Behind = Blue = 6
Village = Violet = 7
Garden = Gray = 8
Walls = White = 9
Get = Gold = 5%
Some = Silver = 10%
Now = None = 20%