Hey guys, welcome to one more lesson!
on this lesson we'll talk about the components in series
what are they and why I want to emphasize this
the components in series, if we go to the ZXW
taking the previous lesson as an example
we can see this line PP_LCM_BL_ANODE
it reaches a "C", we know it is a capacitor
with one pad to ground
on ZXW we've learned that the grey part is Ground and this is the positive line
after that, it went to a filter, but if you notice, the filter doesn't have, in this case
a grey part
it has a positive and it has a yellow one, what does this means?
This is a component in series, is like a jumper
it got there, went over the bridge and reached another town
if we go to the schematic now
we'll see that here's the same filter that I touched before
is this one exactly
here's the line of the connector
reaches a component that is in series, if you notice
this one is parallel
Why? because it has a pad to Ground, but this one doesn't have any pad to Ground
that means that component is in series
so, what does that mean?
if we go here and make a drawing
imagine the line comes from here, and here's a filter
and go through here
so, this is a filter
this is a filter, it does have one point here and another here
this can have one capacitor to ground here and other capacitor to ground here
if we go up, here could be an IC, these are just examples ok?
and for example, this line could keep going until it reaches an IC
here it could have more capacitors
more and more capacitors
excuse me for how I'm drawing it
this component over here is in series, is like a bridge ok?
from this side is called "Town A"
and the other side is called "Town B"
what you must understand is if a line passes through a component in series, the name
of the line will always change
let's see an example of this line that we can see on the schematic
if you can see, from one side, the line is called
if you notice, from one side is called PP_LCM_BL_ANODE, and reached this
and now, when it goes from here to here, now it's called PP_LCM_BL_ANODE_CONN
CONN is for Connectors ok? We'll see about this once we get on schematics
we're almost there, please be patience
So, the same here, look this line
was called PP_LCM_BL_CAT1
and here it's name changed
When a line passes through a component in series
changes it's name
That's one thing, the second is
the components in series
When ... here I don't want to be too explicit, but
don't confuse a component in serie if this beeps to Ground
we've already explained this in the previous lesson when we were talking about
component or line in short, so
this is very easy, for example, I like to use the capacitors, this one
is shorted, is dead
if this one is shorted, what is going to happen?
The whole line, everything I'm painting green, if I touch it, what's going to happen to this line?
The line is shorted
the whole line, but
a component in series is dividing the two towns
is dividing the town who is shorted, and the town who isn't
I can come here and remove the filter
we remove it, ok?
here I removed the filter
so what is going to happen here?
is like the bridge had been dynamited
BOOM the bridge exploded
I can touch here, and if here, for example
depending on the type of measurement, diode, resistance, continuity
here it will beep
or here, if we're measuring in diode mode, this is the value that will give us
we'll have this value, why? Because here's a sick one
but in this side it will not beep
So, don't confuse the components in series, we'll find
coils in series, capacitors in series
capacitors in series, but
a capacitor in series, we've seen that it is a coupling capacitor
we saw it in a previous lesson, you can see it here in this video above
Now a coil, a resistor, those fusible resistors
this is like a fusible, a coil
are components in series
ok then
1- When the line passes through a component in series, it's name changes
2- Don't get confused if you touch a component in series and it beeps
or if it has a low voltage drop
or if this has a low resistance
remember, these are just a bridge
they're communicating from town A to town B
this bridge connects them
and if there is a problem, we will have to dynamite the bridge to find out which town has the problem
So, we'll see many times, for example, imagine here's the filter again
if this circuit is shorted the short goes its way, it is so large that this will explode to save this
so please, don't get confused with the components in series, don't remove them
Unless we go into diagnostics and verify the component is damaged the, coil exploded
or the filter lost its properties and it's voltage drop is different, but
until we get into measurements
Please, understand what a component in series is so we don't get confused
Previously I had a student
let's go to the ZXW
I will show you what confused this student, it was something very simple
He told me "Edgar, this line is shorted"
this line here, he said me it was shorted
this line, and he told me "I removed the coil
and the short is still there"
no, sorry, he said "I removed the coil, the short is gone, but if I put it back on, the short comes back"
so if I touch this, this goes to a capacitor, and because it is a 2XY capacitor, which is a filter
then this goes again to, who? To the Wi-Fi
If I draw this, this is the Wi-Fi
one pad goes to coil
this is a coiled wire on the inside
then passes through this capacitor
which is 2XY, these pad go to Ground
and this continues and gets into the Wi-Fi again
this is the same line
this is the same line, so the student said
that he touched here and beeped, he found the short
so he removed this
in this case, he removed the coil
and that's it, the short is gone
but when he put it back on, the short came back
Why? Because the short was here
What he did was separate the towns, but when he put the coil back
because it is a coiled wire, the short that was here comes and is also present here
So, don't get confused, I know many of you already know this
and probably you're saying "Edgar, why are you explaining this again?"
but I need to clarify many doubts, I'm reading many comments
and I'm trying to figure out what other topics we could put in so we can understand a lot more things
So, before remove something we have to measure
Guys, I'll see you on the next lesson. Bye!