Resistor color

[yavuz]

I have a DMM and I am trying to measure some of the resistors since I can not seem to find the color codes.
But, the values are like 3r3 on BOM.
How do I measure them with DMM.

Could the colors be different than listed ones but value of the resistor would be right?

I am a complete beginner.
Help????

[robboy1]

I found that the colors are correct but they can be hard to distinguish. I. E. red vs violet or blue vs black. I checked each one with a meter. Make sure that you have a good strong light and maybe a magnifing glass. I have a one that fits on my head and lets me look not only at small things like resistors, but also lets me examine solder joints. To measure 3r3 put your dmm on it's lowest setting and look for 3.3 ohms. If the listing on the bom is 3k3 set your range on the dmm for greater than 3.3 k and measure 3.3 k. And so on. Good luck!

[yavuz]

Thanks....

I had a couple wrong color banded resistors sofar.
Measurement was right though.

[dkatz42]

I had a couple wrong color banded resistors sofar.
Measurement was right though.

Seems quite curious--I've looked at a lot of resistors over the past 40 years or so and I've never seen one mismarked.

I've been confused a few times by 1% resistors as the color bands can parse in either direction. Sure you're reading the bands from the right end? Can you give us an example?

[Sean Halley]

The colors can be very difficult to distinguish even in bright light - so get a white light (I use this battery-powered light designed for barbecueing outdoors - it's a white flourescent bulb that comes on a gooseneck). The fact that the light is white makes it easier to determine the gray bands, which look about the same as a couple of other colors under a normal light bulb.

Definitely check out the direction of the bands - if you're having problems, you could go through and measure each one, and see which ones you're supposedly missing or are mismarked. I agree with Katz on the rarity of mismarked resistors...out of spec resistors is another issue....


Hope that helps...

S..

[yavuz]

Actually it was missing 1 color.
But, DMM read the correct resistance and I thought it would be oK to solder so did I.
Was I wrong?

[yavuz]

Egzample R12 on C84 says Green-White-Black-Gold
when the resistor I measured that reads that value has Green-White-Black-Gold + a Brown band at the end.

One other question, It does not matter which side I put to the right or left as long as they are at the printed (silk-Screened) side of the board right?

For resistors I mean.

[tele_player]

That's not mismarked, it just has a band that specs something other than resistance and tolerance, maybe 'quality'

It's been a while since I got any 7th Circle kits. Mine came with all the parts in plastic bags with the DigiKey part numbers. Has that changed?

It made it quite easy to select the parts, and verify them against the BOM and schematic, without requiring much use of the color code.