Author Topic: What is this resistor?  (Read 1875 times)

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Offline sr3323Topic starter

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What is this resistor?
« on: May 26, 2019, 01:11:36 am »
It was out of a PS4 power supply that has no 12V output. The board says "R11" so I assume it is a resistor and not an inductor. This doesn't seem to follow regular color codes. My meter says it's 0 ohms. Thanks!
 

Offline Ian.M

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Re: What is this resistor?
« Reply #1 on: May 26, 2019, 01:51:35 am »
Red 2
Blue 6
Silver *0.01
Gold 5%
Black ???

==> 0.26R 5%

The fifth (black) band is unlikely to indicate a TC of 250ppm/K, as 5% resistors don't usually specify the TC.   Its not a valid colour for reliability or to specify high stability or fusible, so its probably a manufacturer specific code.  As its virtually impossible to determine the manufacturer, that's a dead end.   

It appears to be a non-flammable wirewound resistor, and without a mm scale in the picture we can't estimate its power rating.
 

Online wraper

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Re: What is this resistor?
« Reply #2 on: May 26, 2019, 01:58:23 am »
This doesn't seem to follow regular color codes. My meter says it's 0 ohms. Thanks!
If you know it has low resistance, why would you bother desoldering it? It's obvious it's not faulty.
 

Offline coromonadalix

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Re: What is this resistor?
« Reply #3 on: May 26, 2019, 02:24:36 am »
wirewound resistor

0.265 ohms 1%       the third color is it green ?


once out of the circuit  does it still say around 0 ohms ?

If your meter permis it, can you zero out the probes values ??
« Last Edit: May 26, 2019, 02:27:03 am by coromonadalix »
 

Offline Doogs

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Re: What is this resistor?
« Reply #4 on: May 26, 2019, 02:29:12 am »
Best guess is it's a 26 ohm at 0.5% and they used the black instead of green for the last band for production reasons, 0.5% seems rather specific for just a power supply resistor though. ETA: you could see if there's another one on the board and measure it;
« Last Edit: May 26, 2019, 02:50:40 am by Doogs »
Expensive Tastes and Poor Choices!
 


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