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Doubt about resistance value

ELECTRÓNICA FCJ VENEZUELA
hace 5 años
hace 5 años
Good afternoon friends today with a doubt about the value of the resistance that appears in the image is placed in the primary source of a led TV between the cathode of a 5.1 volt zener that goes to the S of the K3673 mosfet and gnd.
neg2013
neg2013
14.048
hace 5 años

Good afternoon: In my sole discretion, I believe that the resistance shown in the figure corresponds to a value of 0.15 (Zero fifteen) Ohms, because of its dimensions it seems to be 2 Watts and correspond to those of metalfim.

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martin villegas
hace 5 años
hace 5 años
electronic: search as a color code for 5-band resistors on the internet
ELECTRÓNICA FCJ VENEZUELA
hace 5 años

Hi Martin I do not understand why two posts appear with the same question, I tell you that the friend already did what you recommend and gives me 15.8 ohms for that my doubt and in a response from fellow Francisco tells me that it is 0.15 ohms he has a lot more experience in that issues why I thank you for your contribution and that of all those who want to clarify the doubt because I do not want to burn components to the TV that I am working on.

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fferra
fferra
8.644
hace 5 años

0.15 ohms; without a doubt

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martin villegas
hace 5 años

Hello friend, look at the picture I see that the first strip is black (0) second green (5) third silver (.01) fourth gold (between 10) and purple (+ - 1%) so I see it

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ELECTRÓNICA FCJ VENEZUELA
hace 5 años

The first strip is brown

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Victor E
Victor E
65.783
hace 5 años

the first strip is brown, it can never be black and as colleagues say the value is 0.15 ohm.

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martin villegas
hace 5 años

you see why just post the comment without giving value greetings victor

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franciscovallarta
hace 5 años
hace 5 años
The configuration is widely used in switched sources, using a very low resistance to ground and a protection zener in the dispenser, there cannot be a resistance of 15 ohms, disconnect at least one pin to measure it and check the continuity of the tester touching the 2 tips, sometimes the tips when touched mark a resistance, either by dirt on the tester contacts or a fault in the same tester, if you check different diagrams, it is always a low value, see the scheme.
ELECTRÓNICA FCJ VENEZUELA
hace 5 años

That was my doubt, my friend Francisco, because when I connected the TV to the series, it illuminated all the spotlights and I thought here there is a short film, then I measured the zener and it measured me in short and there my doubt arose with the resistance because when I took out the zener, it was good.

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ELECTRÓNICA FCJ VENEZUELA
hace 5 años

And also that the mosfet heatsink heats up but super fast only when connected to the mains, I comment that you put the P10NK60ZFP instead of the K3673, so I did not want to connect directly to the network to prevent the mosfet that came to burn again in short along with the zener that already replace with one of 5.1 volts at 1 watt too.

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franciscovallarta
hace 5 años

If the series spotlight illuminates too much you can also have the mosfet oscillator circuit damaged, it is not uncommon for them to be damaged, along with the mosfet.

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