Not everything that beeps is a short
Hey guys! How are you? Edgar here greeting you all once again
with a different video, today we're not going to repair anything, this is just an advice
I made this video because I still see people who are confused about this
and I say "I can't believe that after so many videos we have talked about this, you are still confused"
so we'll make a video exclusively for the title, we'll talk about all of this, so please
do not get confused anymore
share this video so many people don't get confused anymore
it turns out that in our daily measurements we touch a line and it beeps to ground
or sounds in continuity
BEEEEP
and then you remove capacitors, remove circuits, please, leave alone the components
leave the lines alone
when you're measuring continuity, you're measuring resistance
but that's sound resistance
when the line--
"What's resistance? "is the opposition to the passage of the electrons" blah blah blah, so
you're measuring Ohms
is a measure of Ohms but sonorous
what's the difference between measure Ohms and Continuity?
in Continuity, when we find a line with a low resistance
depending on the multimeter that we have
that will sound as if it were in ground
but sometimes it is not in ground
sometimes is because the line has a low resistance
Once again
it is not a short circuit
is a line that has a low resistance
and that's why it sounds in Continuity, because continuity is a measure in Ohms
and when it encounters a low resistance, it beeps
I'll show you a very simple example
Ok, this is an iPhone 8
so, let's see this line, this little capacitor over here
It turns out that in your measurements, one day I tell you "look at all the outputs of the PMIC
look if something is in short, because if there it is a short
the phone will not turn on
let's put the multimeter in continuity and let's do something
touch the tips
we can see it is showing 0.00
that's the lowest resistence of my multimeter
I'll switch it in Ohms
and I'll measure my tips, I'll only touch the tips
What is the lowest resistance in Ohms?
0.2, 0.1
that's the lowest resistance of my multimeter
ok then, now
that's the lowest, if something is as low as that, that means there's a short circuit
in continuity at 0
in Ohms at 0.1
ok then, let's do something
let's touch this line and let's see
in this case, we'll touch this capacitor
Ok? this capacitor over here
I touch it and... 0.0 that's Ground
if I touch the other side
and it has 3.5
this is not the same as this
that's Ground
this is 3.5
that's not Ground, cuz what is the lowest value on my multimeter?
0.0
if I touch here
it has 3.4
now, let's switch the multimeter to Ohms
What is the lowest value in Ohms?
It was 0.1
that's Ground
that is not resistance
We measure
and we have 0.3, that means Ground
now let's touch here and we have 4.1 Ohms
This is not Ground
Now let's make a more normal measurement
In diode mode, positive tip to Ground
and with the negative I touch it, this is Ground 0.001
and now I touch here
and it has 0.007
So, this line, let's put Ohms once again
and measure it
this line has 3.84 and something
if I measure it with continuity it has
3.2
Now, if I see this on the ZXW and touch this line
this is a GPU line
this line is a low resistance line
that's why the multimeter beeps, and that's why you think there is a short
WHEN
IT
IS
NOT
So, please, don't get confused
I have friends that remove a PMIC
when they find a line of these that beeps as if it were short, but it is not
leave the PMIC alone, you can remove the PMIC once you have made a good diagnosis
But, please, don't get confused, I hope this video makes it clear
this video is just a contribution for those who are just starting out
please, understand this measurement
Here I'll leave you our basic course that we have in Youtube
watch it as many times as you need
understand what is continuity and when it is a short is because
it is 0
when it is not a short you'll have a different value
you can measure it in Continuity or Ohms
you'll notice that the value is different when
it is Ground or when it is a low resistance
it has a small value
that's enough to say "No, this line isn't in short, it's just a line with a low resistance"
I hope you found this video useful
share it, leave your comments below
it was a pleasure to greet you all and we'll see you
as always, in the next video
Bye!