4440 emplifier ki ek IC se Awaaz Nahin a rahi hai

Khempur Repair

title  4440 emplifier ki ek IC se Awaaz Nahin a rahi hai   About  hello doston khempur repair channel Mein aapka swagat Hai Doston Aaj mere pass mein 4440 double IC mein amplifier Hai is amplifier mein problem yah hai ki Iske Ek channel mein sound Nahin a rahi hai aur dusre channel Mein sound a Rahi Hai to yah problem aapke amplifier mein bhi ho sakti hai isliye aaj main aapko is video mein is problem ko check karne ka aur repair karne ka Sahi Tarika bataunga jisse ki aap is video Ko Dekhkar Apne amplifier ko bhi aasani se repair kar le is video mein Puri Jankari hai ki Kaise aur kahan Kya aapko check karna hai kaun si problem amplifier Mein Aati Hai Jiski vajah se ek side work nahin karti hai to is video ko aap pura Dekhen video Pasand Aaye To like Karen aur apne doston ke sath share bhi Karen aur Hamare channel ko subscribe Karke support Jarur Karen Chaliye Milte Hain next video mein thank u   Instagram  https://www.instagram.com/khempurrepair/   playlist  4440 amplifier https://dailymotion.com/playlist/x6sf1t   #khempurrepair  #4440amplifier  #amplifier  #4440iccheck

Transcript

00:00Hello friends, welcome to Khempur Repair channel.

00:04This is a 44 amplifier.

00:06The problem with this amplifier is that

00:08the sound is coming from one channel

00:10and not coming from the other channel.

00:12This can also happen in your amplifier

00:14that one speaker is working

00:16and the other speaker is not working.

00:18Whenever this happens,

00:20you can check it yourself

00:22so that you can find out

00:24what is the problem in your amplifier

00:26and you can also

00:28fix it.

00:30Because many times it happens

00:32that there is a small problem

00:34because of which

00:36if you take it to any mechanic or shopkeeper

00:38they charge you a lot of money.

00:40So watch this video

00:42this video is made for you

00:44and is very useful.

00:46Whenever you have this problem in your amplifier

00:48then first of all

00:50you have to do that

00:52suppose this channel is not working

00:54and this one is working

00:56then first of all

00:58you have to check

01:00that your speaker

01:02is not broken

01:04because many times it happens

01:06that the coil of the speaker gets burnt

01:08and the wire gets damaged

01:10because of which we think

01:12that there is a problem in the amplifier.

01:14So the first thing you have to do

01:16is to check the speaker

01:18when you check the speaker

01:20and you feel that there is a problem in the amplifier

01:22so the second thing you have to do

01:24is to check the board of the amplifier

01:26the board of the amplifier

01:28the heat sink of the aluminum

01:30the second thing you have to do

01:32is to touch it with your hand

01:34there is no current in it

01:36it runs on DC

01:38so there is no problem in it

01:40if it is in your body

01:42then keep your hand here

01:44and check it after 2 minutes

01:46because this heat sink does not heat up

01:48and it takes 1-2 minutes

01:50if it is normal

01:52then it is ok

01:54but if your hand is getting hot

01:56and you feel that it is very hot

01:58and it is more than normal

02:00then you can understand

02:02that there is a problem in your IC

02:04so you can try this second way

02:06and suppose

02:08that there is no sound

02:10and your heat sink is also not getting hot

02:12so the third way is

02:14that the IC in this

02:16I will show you here

02:18so this IC

02:20because of over voltage

02:22or overload, the IC

02:24breaks

02:26so when the IC breaks

02:28it does not work in this condition

02:30the right IC will work

02:32and the wrong one will not

02:34you can't see anything

02:36and when the IC breaks

02:38the IC will always break from the black side

02:40this is the part of the black side

02:42whenever it breaks

02:44the IC will break from this side

02:46and the white side

02:48the IC does not break from this side

02:50so keep this in mind

02:52that if there is any damage in your IC

02:54then you can see the IC

02:56separately in the board

02:58so you don't need to open the IC

03:00so you can find out from this

03:02that there is no problem in your IC

03:04now suppose that you have done all three steps

03:06but still

03:08your heat sink is not getting hot

03:10and the IC is not breaking

03:12but still there is no sound on your channel

03:14now you have to do this

03:16the wire from the speaker

03:18to the bridge

03:20is this one

03:22and this is the supply wire

03:24of brown color

03:26now you have to check the supply

03:28first

03:30after that whether the supply

03:32is going to both the ICs

03:34because many times it has been seen

03:36that the print gets short

03:38from inside

03:40because the print is very long

03:42and all the boards are like this

03:44from here to here

03:46how long the print is

03:48the same is here

03:50so to check the print

03:52you have to count the pins

03:54from here

03:561,2,3,4,5,6

03:58the pin number 11

04:00is plus 12V

04:02so you have to check the voltage

04:04on this pin

04:06and check both the ICs

04:08so if both the ICs are getting voltage

04:10then you can understand

04:12that if both the ICs are getting voltage

04:14then there can be some problem in the IC

04:16but if one IC is getting voltage

04:18and the other one is not

04:20then only one channel will work

04:22so first you have to check the voltage

04:24to check the voltage

04:26I have turned on the amplifier

04:28and set the meter to DC 20V

04:30ok

04:32one probe

04:34I keep it on ground which is negative

04:36and the other probe

04:38I will keep it on pin number 11

04:40ok

04:42so let's check the voltage

04:44here we are getting 16V

04:46ok

04:48after this

04:50let's check the other pin

04:52pin number 11

04:54here also we are getting

04:5616.2V

04:58means

05:00we are getting the same voltage on both the pins

05:02means

05:04there is a high chance that your IC is not working

05:06because you have checked everything

05:08you have checked the supply

05:10and you have checked the speaker

05:12ok

05:14at last you have to turn on the home theater

05:16and

05:18these are the speaker wires

05:20these are the speaker wires

05:22let me show you

05:24the purple one is for one side

05:26and the white one is for the other side

05:28ok

05:30so you have to

05:32turn on the amplifier

05:34and don't increase the volume

05:36ok

05:38don't increase the volume

05:40and turn on the amplifier

05:42after turning on

05:44this speaker wire

05:46one probe you have to keep

05:48here

05:50and the other probe here

05:52means you have to keep both the probes

05:54on the speaker wire

05:56so here you are getting

05:580.0

06:00some volts

06:02ok

06:040.0

06:060.0

06:080.0

06:100.0

06:120.0

06:140.0

06:160.0

06:180.0

06:200.0

06:220.0

06:240.0

06:260.0

06:280.0

06:300.0

06:320.0

06:340.0

06:360.0

06:380.0

06:400.0

06:420.0

06:440.0

06:460.0

06:480.0

06:500.0

06:520.0

06:540.0

06:560.0

06:580.0

07:000.0

07:020.0

07:040.0

07:060.0

07:080.0

07:100.0

07:120.0

07:140.0

07:160.0

07:180.0

07:200.0

07:220.0

07:240.0

07:260.0

07:280.0

07:300.0

07:320.0

07:340.0

07:360.0

07:380.0

07:400.0

07:420.0

07:440.0

07:460.0

07:480.0

07:500.0

07:520.0

07:540.0

07:560.0

07:580.0

08:000.0

08:020.0

08:040.0

08:060.0

08:080.0

08:100.0

08:120.0

08:140.0

08:160.0

08:180.0

08:200.0

08:220.0

08:240.0

08:260.0

08:280.0

08:300.0

08:320.0

08:340.0

08:360.0

08:380.0

08:400.0

08:420.0

08:440.0

08:460.0

08:480.0

08:500.0

08:520.0

08:540.0

08:560.0

08:580.0

09:000.0

09:020.0

09:040.0

09:060.0

09:080.0

09:100.0

09:120.0

09:140.0

09:160.0

09:180.0

09:200.0

09:220.0

09:240.0

09:260.0

09:280.0

09:300.0

09:320.0

09:340.0

09:360.0

09:380.0

09:400.0

09:420.0

09:440.0

09:460.0

09:480.0

09:500.0

09:520.0

09:540.0

09:560.0

09:580.0

10:000.0

10:020.0

10:040.0

10:060.0

10:080.0

10:100.0

10:120.0

10:140.0

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Transcript

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