4.1 Home Theater Repair - 2 Speaker No Work, 2 स्पीकर मे फटी फटी आवाज आना ठीक करे Problem Solution
4.1 Home Theater Repair - 2 Speaker No Work, 2 स्पीकर मे फटी फटी आवाज आना ठीक करे Problem Solution
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00:00Hello Friends, Welcome to HK Electronics World
00:03I hope you all are doing great
00:06Today I have 4.1 Home Data Assembled
00:10This is not made by any company
00:14As you can see the base is quite big
00:17It is more than 6 inches
00:21There are only two speakers running and they are also chattering
00:26You can see 4.1 is written on it
00:30It is quite big, let me show you
00:34It is quite big in height
00:37We have to repair it, let me show you
00:41Let me switch it on
00:44It is in aux mode
00:46This is its volume
00:48It is chattering
00:51Let me play a song
00:55The song has been played
00:59You can hear how bad the sound is
01:02It is only in 2
01:05You can see
01:07There is no sound in this one
01:11Neither in this one
01:15There is no sound in this one also
01:18It is only in this one
01:20Let me check it one by one
01:23I will check my speaker
01:25I will not trust the customer's speaker
01:28Let me remove all the speakers
01:32I have removed all the speakers
01:36Let me check my speaker
01:39Let me check it on all the speakers
01:42Let me increase the volume
01:45You can hear the bass
01:50The bass is quite good
01:53Let me check which one is playing and which one is not
01:57Let me check the first one
02:00It is playing in this one
02:03It is playing in this one also
02:06But the sound is not clear
02:08You can see
02:10The sound is not clear
02:12Let me check in this one
02:15There is no sound
02:18There is no sound in this one
02:21Let me open it
02:24Let me remove the RC lid
02:28Let me put it on the counter
02:31I have put it on the counter
02:34Let me open the page
02:37You have to open the last page
02:40Because there is a board in the middle
02:43Let me set the camera
02:46Let me open all the pages
02:49Then I will show you
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03:14Let me open the page
03:17I have opened the page
03:20Let me remove the back cover
03:23Let me remove the back cover
03:26Like this
03:28The box is opened
03:30Let me bring the camera
03:32Let me bring the camera
03:34Let me show you the system
03:37This is the structure
03:40This is the structure
03:42Let me open it
03:44There is a wire
03:46It is not allowing me to open
03:48You can see the wire
03:50It is not allowing me to open
03:52There is a glue
03:54Let me remove it
04:01Let me remove it
04:04I have removed the base
04:06But the wire is broken
04:08Let me remove the board
04:12Let me show you the 2 IC
04:14It is not working
04:16I am not able to find the TDA
04:18There are 3 different IC
04:20I am not able to find the TDA
04:22Let me find the TDA
04:25Let me remove the board
04:28It does not allow me to open
04:30Let me remove the board
04:32It is not allowing me to open
04:34There is a problem
04:36Let me remove the board
04:39so you have to take a photo of it
04:42after taking the photo you can do like this
04:45so you can put the jigs like this again
04:48so here we will remove all the jigs one by one
04:51let me set the camera
04:54so we have removed all the jigs
04:57I have fast forwarded the video
04:59and you have to remove the jigs by removing the glue
05:02take a tong or cutter like this
05:05cut the jigs and remove them easily
05:08because if you pull the jigs by pulling the wire
05:10the wire will break
05:11so don't do like this
05:13just hold the jigs and not the wire
05:15so let's remove the jigs
05:18so we have removed the board completely
05:22so let me show you the IC number
05:26which IC is used in this board
05:29so in this I am able to see the IC number
05:32it is written TDA7265
05:37so this is the IC number
05:39let's see what is the purpose of this IC
05:41so here you can see the base jigs
05:44it is used in bridge mode
05:47so this is the IC for the base
05:49and this is the IC for the satellite
05:52this is for this IC
05:55and this is for this IC
05:57two satellite speakers
05:58so if we see the IC
06:01so if you see carefully
06:03you can see the IC is broken
06:06our IC is broken
06:08it is obvious that it is broken
06:11because it is broken
06:12so it won't work
06:13you can see the gap here
06:16so you can see it is getting separated
06:18you can see
06:20how nicely it is broken
06:23so this is 4.1 ohm emitter
06:25we will repair it
06:27so this IC is broken
06:28and we can hear the bad sound on the other IC
06:30like this
06:31and if we see the capacitor here
06:34we can see it is outside
06:35so we will check it here
06:37on both the voltages
06:38so we have got the voltage around 13.9
06:41let's check it on the second
06:43see it is almost same on the second
06:46it is almost same
06:49ok
06:50so our voltage is ok
06:52after that you have to check the voltage up to the IC
06:55I have told you the way to check
06:58so you can watch that video
07:00otherwise there is no problem
07:02so we have kept the IC here
07:04and let's check it here
07:11so we are getting the voltage in minus and plus
07:16so we are getting the voltage here
07:18we are getting the voltage properly on both the ICs
07:20so now we have to open the board
07:23so we have to open both the pages
07:26very easily
07:28we have to do it very easily
07:30and then we have to remove both the ICs
07:33because one is broken
07:35and we can hear the bad sound on the other IC
07:37so this is the problem of the IC
07:39so we have to remove both the ICs
07:42by using the soldering iron
07:44and then we have to put the new ICs
07:46so now we have removed the board
07:49so we have to open the board
07:52we have to open it here
08:00and remove the board
08:14so we have to remove both of the ICs
08:18don't tear the print
08:20if you don't have the expertise
08:22you can use the soldering iron
08:24but if you have the expertise
08:26you can use the iron
08:28so friends, first IC soldering is done, now I am going to remove the second IC
08:34I fast forwarded the video so that you don't waste your time
08:39so we have to remove the second IC as it is getting too hot
08:45so we will remove this too
08:48friends, remember to put the same number of IC that you have removed from this
08:55you can put good quality IC but don't put any other number
09:00so let's remove this, both ICs are removed
09:05so friends, as you can see the print is clean and no print is torn
09:11we have removed it very well
09:13ok friends, now we will put the new IC
09:17so friends, we are going to put the new IC in this, this is our B30 IC
09:21as you can see the number is B30
09:29so friends, when you put the new IC, you have to put the heat compounder at the back
09:36you have to put the heat compounder at the back
09:40so that the heat sink will stick to the IC
09:43and the proper heat sink of the IC will go
09:47so we have to put it at this area
09:51so we have to put it like this
09:55so friends, we have put it
09:57so if you are wondering where to get the heat compounder
10:01so friends, you can get it from the electronic shop, it costs 10 rupees
10:05so it looks like this
10:07heat sink compound
10:09cello chamber, it is written like this
10:12ok friends, now we will put this IC
10:16we will put it where it was
10:18so friends, you have to remember one important thing
10:21when you put the IC in this
10:24before soldering the IC, you have to take the page cut
10:29what will happen if you soldered it first
10:32the pin will not sit properly
10:35so first you have to put the IC and take the page cut
10:39you have to do the soldering later
10:41you have to take care of this
10:43you have to take care of this
10:45you have to take care of this
10:47you have to take care of this
10:48and you have to do the soldering later
10:49first you have to take care of the IC
10:51so you have to work like this
10:53so I will do the soldering of the skin
10:55I will cut the big legs
10:58I have fast forwarded the video a little
11:00because the work will be the same as I am telling you
11:03ok friends
11:04you have to do this
11:06I am telling you this
11:08so keep this in mind
11:11because you have to cut the IC first
11:14you don't have to do the soldering
11:16you have to take care of the IC where you put the page cut
11:19you don't have to take care of the IC where you put the page cut
11:20you don't have to take care of the IC where you put the page cut
11:22so I will clean it and let's see
11:24so friends, the board is clean
11:26you can see the print here
11:28so let's put the jigs
11:30this is the output of both the ICs
11:32and let's turn on the board
11:34so I have already turned on the board
11:36so let's check
11:38so we will put it here
11:40we have put it here
11:42if we check it
11:44we have to put the pin number 1 like this
11:46we have to put the pin number 1 like this
11:48it didn't come on this
11:50this is the other channel
11:52see, we can see the sound like this
11:54see, we can see the sound like this
11:56so this is ok
11:58this is ok
12:00it is not coming on this IC
12:02because this channel is different
12:04so let's change it to the other side
12:06there are two ICs
12:08there are two ICs
12:12friends
12:14this is the sound of this IC
12:16you can see
12:18this is the sound of this IC
12:20so friends
12:22we have cleaned it
12:24now we will pack it like this
12:26so let's put the page
12:28so let's put the jigs
12:30so let's put the jigs
12:32so let's put the jigs
12:34so let's put the jigs
12:36so friends
12:38the jigs are removed
12:40in a strange way
12:42this is the input jigs
12:44but this is the base jigs
12:46but this is the base jigs
12:48because it should be put according to the color code
12:50if you are doing any work, do it properly
12:52this is the speaker jigs
12:54and this is
12:56you can guess
12:58these two pins
13:00these two pins
13:02are meant to give 5v
13:05you can see these two pins are the volumes
13:07we have changed them
13:15but we will fix it
13:17our subscribers
13:19can face too much fever
13:21we will fix it
13:23ping voltage
13:25and volume
13:27and volume
13:29and volume
13:31and the 2 pin one is for 5V
13:34means the one you have removed the jigs from
13:36from where you have to put it
13:38if you have checked the photo it is good
13:40if not then you can track
13:42which jigs where you have to put
13:44so we have put all the jigs
13:46and now we will bend it from the back
13:51turn it on
13:53friends we have turned it on
13:54let me show you the panel
13:56the light has come
13:58you can see it
14:00let me show you
14:02you can see it
14:03so it is turned on
14:05now we will
14:07friends I was holding the camera
14:09so we will
14:11remove the socket
14:13and see the input
14:15I think the bass is coming
14:17now we will check the speaker
14:21see it is working
14:23this one is also working
14:27this one is also working
14:30this one is also working
14:32so all of them are working
14:34so I will show you the song
14:36on the other side
14:38see it
14:40and the sound is very clear
14:42now
14:44I am increasing the volume
14:50I have put it on the series board
14:52the bass is also good
15:00I have turned off the sound
15:02I have turned it off
15:04so now it is playing very good
15:06so Jai Hind Vande Mataram
15:08Like it