I really cannot understand why always i look at right place and think right but cannot go to success.



thanks...

 

Do you have a mulitmeter to measure it with?
Sometimes, odd colours are on inductors.
http://www.instructables.com/id/Inductor-Color-Code-Guide/

 

this is not inductor. the idea is to know it should be and when measure it make some conclusion

 

Here's an online calculator for you: https://www.digikey.com/en/resource...version-calculator-resistor-color-code-5-band

The lighting in your photos is so poor, can't tell the colors, but probably you can in better light.

 

the problem is that i see color Black at first or last position and there is no color black on first or last position in calculators...

the pictures are not so bad. the colors are : Black red Purple silver Gold.

i now saw that the resistance is kinda broken. Are they failed that way or they only look burnt?

 

In my experience, the color bands black, brown, and violet can look the same without careful examination in bright sunlight. Of those, I find violet and brown very hard to differentiate even with new components. True, a first band of "black" is indeed unusual and unexpected. That is why it is often useful to use a meter to tell what it is.

 

Ir you have not measured it, how do you know it is not an inductor? those colours are consistent with the markings of an inductor and they do come in that sort of package some times.

 

The reason i am shocked is that if that is not black i should be really daltonist

It`s desoldered from point labeled with R.

My esr meter does show 115.3 K and symbols are 1-Resistance-3

The idea ...

I am trying to find the "bad and faulty" from one power switch unit

I dont find schematic so i should read color codes to understand the value and then compare with measured.

Here`s picture of that crack

 

The problem is resistors do not have the first band as black. Inductors do.
Is there any place where there is another the same?
That crack in the body of the part will render any measurement invalid.
What is it from (brand and model)? Do you have any chance of getting a schematic?
More info may help. As it is, there is nothing more can be done as you have not given enough info. And just because the board has an "R" label, it may not be a resistor. The board may have been designed for a decoupling resistor but production could have found an inductor gave better results. Can you trace out the circuit or post some pictures of the board?

 

The problem is resistors do not have the first band as black.

Uncommon, but not non-existent. Here is a 5 mohm 1% resistor from Ohmite/Digikey:


On searching for examples, some calculators omit black from the first band. Others include black as an option,

 

Well, That is a new one for me. So you just take off a decimal places for the blacks? I'm still unsure how to read that to get 5Mohms.
I wonder why the manufacturer decided to go with their own "standard"
That is the thing about standards. They are good, that is why we have so many
So, the original resistor in question may be 0.027R ???

 

For that particular series, Ohmite uses a white multiplier band to mean 10^-3 (http://www.ohmite.com/assets/docs/res_wl.pdf?r=false). I guess the theory is that one is unlikely to confuse a gigaohm resistor with a milliohm one. And if you did, you might get a real surprise.


The TS's resistor is may well not be Ohmite. In fact it does not look like the Ohmite examples. However, if the black band for some reason is meant as a leading zero, one could read its value as 0.26 ohm too -- the multiplier band certainly looks like silver instead of white..