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hello guys this is a video regarding a potential repair
for a 2003 Infiniti g35
with the with the BOSE audio system
and navigation.There are quite a bit of manuals online about removing
to audio unit and the head unit
from the car so won't bore you with that um
I managed to remove everything and got down to
with the fair essentials and this is
a the unit interest I guess that's what this caller
now this face that you're seeing right here
is actually the bottom much just on the vehicle
this is the bottom face I'm it could turn around and show you
yep as you can see this is the cassette player
and the CD rate there the face place in everything is
is removed Oracle face plate but I think they call it
something like
%uh yeah I don't know what exactly is 50 calls a
this is %ah flex PCB or a
yeah for a bit ribbon cable that goes
actually the front in the butt as et cetera now
for more and the stands there's a common issue with D's
units %ah where
the whole system stops and you can't use to %uh the
a track controls the AC doesn't work properly et cetera et cetera the whole
set
think shuts down on so what if
II don't less so they have that issue
rate do half is a happen intermittent battery drain so century some mornings
i'll get in my car
and the coal not start because the battery was straight
I don't like that especially the fact that intermittent
it also made debugging I have a lot more difficult I wanna say
I am because other now there's repair services
that will prepare this for 150 200 80 bucks
including shipping on some them %ah but
considering its 2013 now in this a 10-year-old
car I don't necessarily wanna go that route so
%ah what we do is this plaintive videos and taking
this to this level this is the units
let's look from the back because this is probably the the area interest for us
%ah first they have to do is remove this
there's a whole bunch of small screws up all around
the Sun must've gotten a dealer these are some thanks
0 by the way this is a a clay on %ah
head unit so it is actually Nissan most likely contracts in the Celts to query
on to manufacture
but that aside K the next thing that you have to do is
there are four screws that holds the cassettes
a a mechanism I guess
cassette player on this so once you remove the
the Chicago like so
which reveals the the full circuit board to a in here
this big guys the main now microcontrollers controls the whole
systems this goes to the CD changer this flex course. the sea change on the back
your tutor
contribute for stuff now the area that
unquestioning specifically there was another forum user that
that looked into it %ah is this one right here
let me get some tactics or something to point to it
so there's this *** transistor
back to here much you can't see it I guess from the top Yankees your round
that's that lets quite annoying isn't
think it right see what I can do okay that's better
so this big transistor here
kept which
up just fart at the circuitry that gives the five most the whole unit
and this five oldest active no matter if your system is
on our of the rest to the power supplies such as a
nine volts for the CD nine votes separate for the system
up lost all votes though controls
from this and see you with with a signal
to its search UK opens so yeah
now what was funny is I'm
there's two resistors a their
can focus on their
or wait till five surface mount resistors
I've already looked into the playing with 10 the
in this tournament zoom that's right a yes their ego something happened
area so you see the are 5-10
well let's focus as a co-factor there's focused
I 510 are 509 you'll notice the
are 519 is removed are 5-10 is not
up waded as I removed the resistors they were
kinda tombstones a something similar to what you would see to a bad solder
jobs in the but pick and place machine
if a a it's not done properly in the heat of how was it like
but a just doesn't quite look like that it seems like him
I don't know maybe excessive heat there was a butt a bit of flux residue
honor Indies
sorry around here
and the on the resistors are terry moved I don't think that's that's a problem
for me it could be a problem
overtime but not really the flux residue you see right now
which is dis black stuff from the are
was 510 I just for me so I haven't cleaned up yet
%uh yeah I believe a.m.
I'm going 3 for these resistors as you notice are 5-10 right now has a little
bit too much harder
and efficient be worried about that I did it
up I don't know what's better X technically it's not a proper size
reduction have a little bit less other than that
there's blogs cider on that so it's not perfect
but a that said in a certified in
in any kinda soldering
be its car sorry be it to any other kind I just a
I guess from experience have a general idea what is a good senator into one
isn't
meets try and get this to focus
and it's crap that's good our
you're a I would love to return all that money paid for
from showing this video so yes any complaint
and as I'll keep you updated with that and the
hopefully this resolves intermittent battery drain issue
want to give you a quick
to view where to send it up
so what I've done is to
22 owners resistor as I've replaced with a single
to Nome resistor which means that more powerful
dissipated now the transistor I hear
etc to have a new heatsink on this it's Randy
there so in order to bring down its junction temperature have the heat sink
their
on session that should suffice
actually should be freezin much
bulletproof so yeah on the outside
this sir had does not interfere with anything from the back here we have
20 s that's now but there's nothing there so
overall this should produce a very stable five-fold
rail and do it for long periods of time when
down any issues that overeating really should be sold