Khempur Repair
Khempur Repair
  • 3 months ago
title
7 tips to dth repairing

About
hello doston khempur repair channel Mein aapka swagat Hai Doston Aaj mere pass mein DTH ki SMPS hai aur is SMPS ko repair karne ke theek karne ke main aaj aapko 7 tips batane wala hun jinki madad se aap apne SMPS ko theek kar sakte hain Chahe aapki SMPS ded condition mein ho shortage Dikhati Ho no signal ki problem ho week signal ki problem ho automatic cut on off ki problem ho Chahe Koi Bhi problem ho aap is video Ko Dekhkar Apne SMPS ko theek kar sakte hain aur yah bhi aapko pata chal Jaega is video mein ke SMPS mein problem hai to aapko kis jagah check karna hai aur kaun sa component aapko repairing karna hai yani ki dekhna hai check Karke yah video Pasand Aaye To like Karen aur video ko aap share Jyada Se Jyada Karen thank u

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Transcript
00:00Hello friends, welcome to Khemper Repair Youtube Channel.
00:04Friends, today I have DTH SMPS.
00:08Friends, I would like to clear you at the beginning of the video that this SMPS is of DD Free Dish.
00:16What are the problems in this SMPS?
00:21If there is a fault in the SMPS, then where do you have to check?
00:26Because you are seeing a lot of components in this SMPS.
00:31And all this is for different types of work.
00:34So it is not that every time this is bad, this is bad, this is bad, this is bad.
00:38That is, after everything is bad, the fault in the SMPS comes of a different type.
00:44So today I will tell you about 7 main faults that come in your SMPS.
00:51And because of which you feel that the card of your setup box is broken.
00:59But no, the card is not broken.
01:01Because of the SMPS, you will feel that the card is broken.
01:04So watch this video till the end.
01:08Now assume that you have this SMPS in your box.
01:13And if your setup box is completely closed.
01:18When you give it power and if there is no power in it, it is completely dead.
01:23So what do you have to check first?
01:26So see, first of all, you have to check the voltage of the main jack of the SMPS.
01:31Keep this in mind whenever you repair or check the SMPS.
01:35Always do it on the series.
01:37Do it on the series board.
01:39And do the other thing very carefully.
01:41If it helps you, then only check it.
01:43Because it is checked directly from the AC board.
01:48So check the supply on the main jack.
01:51If volts are coming here, then it shows that the main lead and the switch are working properly.
01:57If volts are not coming here, then you can check the main lead.
02:01After this, supply comes from one leg to the fuse.
02:05One leg comes directly and the other comes on the fuse.
02:08So if volts are coming here, then you have to check the fuse once.
02:12The fuse opens from this side.
02:14It means it is easy to open.
02:16It opens from this side.
02:18You can check the fuse.
02:20If your fuse is correct, then you can see that its supply will go to the line filter.
02:25This thing is called a line filter.
02:28If there is any problem in your SMPS, the fuse will fly.
02:32If the fuse does not fly, then the line filter is damaged.
02:35You can change it or short it.
02:38You can take supply in both ways.
02:40If you short it, then you will see the lining on your screen.
02:43So try to change it if it burns.
02:47After line filter, supply comes to the bridge.
02:51In this bridge, the diodes get damaged sometimes.
02:55There is a very low chance that all your diodes get damaged.
02:58Mostly one or two diodes get damaged.
03:01After that, you have to check the supply on the capacitor.
03:04The supply from the capacitor comes to your IC.
03:08This is how SMPS works.
03:11In dead condition, you have to check one by one like this.
03:15In the end, you have to check the capacitor.
03:17If there is a voltage of around 350 V, it means that this section is the primary section.
03:27It means that your primary section is working properly.
03:32If your card is not working, then there is a problem in this section.
03:37This is your secondary section.
03:40This is how you have to check the SMPS.
03:43If your SMPS is dead, then you have to check it one by one.
03:46It is not that if the SMPS is not working, then you have to remove the IC directly.
03:50You don't have to do this.
03:51Now let's move to the second fault.
03:54Sometimes in DTH, when we apply DTH in power,
03:58DTH shortens the light.
04:01For example, if we apply it on series, then the series bulb glows.
04:05It glows very fast.
04:07This condition always occurs due to the four diodes in the bridge.
04:11If any one of these diodes shortens,
04:14then many times it happens that your diode shortens.
04:19In this condition, you have to check these four diodes on continuity without removing them.
04:24You will know from that.
04:26Whatever diode is bad, you have to change it.
04:31You can easily change it.
04:33The number of this diode is IN4007.
04:36You can check it in your SMPS.
04:38Now let's move to our third point.
04:41If the AC section in your SMPS is working properly
04:46and when you check the voltage,
04:48then you are getting volts on the capacitor here as well.
04:51And you are getting volts on the pins of the IC as well.
04:55When you look at it from the meter,
04:57if you feel that your IC is working properly,
05:01but still you are getting 6 volts and 7 volts in the output.
05:05If you are getting such volts at 12 volts,
05:086 or 7 volts are getting on this pin of 12 volts.
05:18If you are getting 6 or 7 volts on this pin,
05:26not more than this,
05:28then you have to check these diodes.
05:31If one of these diodes is short,
05:34then you will get the same volts.
05:36And sometimes it happens that these diodes are not bad.
05:39If you still have this problem,
05:41then you can check this transistor or the resistance and this PF.
05:46The chances of PF are less.
05:47The chances of transistor are more.
05:49You can do this as well.
05:50But first you have to check the diode.
05:52Because first most of the chances will be of diode.
05:55Even after checking the diode,
05:57if you are still getting 6 or 7 volts,
06:00then you can check this section or this section.
06:03Because of this, there is a problem of 6 or 7 volts in the SMPS.
06:08Now let's talk about the fourth fault of the SMPS.
06:11This fault is such that you will feel that the SMPS is correct.
06:16Your DTH card is bad.
06:18But no, friends.
06:19This also happens because of the SMPS problem.
06:22The problem is that when you supply the SMPS to your DTH,
06:28your DTH runs sticky.
06:31That means whatever channel you put,
06:34you will get less signal on it.
06:36And if you put some other DTH on it,
06:38then the signal comes right on it.
06:40This problem is mostly due to 3.3 volts.
06:45The first wire here, this one.
06:49So this is the 3.3 volt jack.
06:52This one.
06:53If 3 volts come on this 3.3 volt,
06:57or even less than this,
06:59then it will not work properly on your card.
07:02Because of which your card will not work.
07:05The signal will stick.
07:06So this problem is not to be fixed.
07:083.3 volts are made in this SMPS from 5 volts.
07:12Where one diode is here,
07:14and the other diode is here.
07:16For example,
07:19I will show you.
07:21This is 5 volts.
07:22The first pin is of 5 volts.
07:26So for 5 volts, one diode is here.
07:28From 5 volts, one diode is here.
07:30Then one diode is here.
07:32And 3.3 volts are made here.
07:35So if your signal is sticking,
07:37and 3.3 volts is less than the voltage,
07:39as you have checked from the digital meter,
07:41then you either
07:43short this diode here or here.
07:50When you short it,
07:52instead of 3.3 volts,
07:54your volts will increase here.
07:56If your volts increase,
07:58if they are around 4 volts,
08:00even after that if the signal sticks,
08:03then you can assume that your card is bad.
08:05Otherwise, the volt is sticking because of your SMPS.
08:09If the signal is correct,
08:12then you can either short this diode
08:14or remove the diode and make a direct jumper.
08:17So in this way,
08:18you can also fix the problem of sticking signal
08:20with SMPS.
08:22Now let's talk about the 5th problem.
08:24In DTH, the 5th problem is that
08:26your DTH gets cut while running.
08:30Cut means that it will stop suddenly
08:32and then it will turn on again.
08:34Then it will run for a while,
08:35then it will stop and then it will turn on again.
08:37This problem can happen anytime.
08:40It may happen twice in a minute.
08:42It may not happen even once in 10 hours.
08:44It can happen anytime.
08:46If this kind of problem is coming in your DTH,
08:49then it can also happen because of SMPS.
08:51For this, you have to check this section,
08:54especially this transistor.
08:56What is the number of resistances of this transistor PF?
08:59How does it work?
09:00If you say, then I will tell you in detail.
09:04And friends, I will tell you one more thing
09:06The IC in this transistor is 2 pin short.
09:09How many volts will come on which pin of this?
09:11I am going to tell you right now in this video.
09:14So stay tuned.
09:16So what I mean to say is that
09:18what is the problem in this section
09:20and how does it work?
09:21I will make a separate video on this.
09:23Because a very big video can be made on this.
09:26So if there is a problem of cut in your setup box,
09:29then you can check this section.
09:32Now let's talk about the 6th problem.
09:35Friends, this problem also comes a lot in your DTH.
09:38In this, when you give power to DTH,
09:41then your DTH runs properly.
09:43And after running for 5 minutes, 2 minutes, 4 minutes,
09:46what happens?
09:47It starts sticking.
09:48After that, when you turn it off
09:50and turn it off and give power again,
09:52then your DTH starts running properly again.
09:54But again it runs for 2-4 minutes,
09:55and again it starts sticking.
09:56This problem of yours comes from the main capacitor.
10:00Here it is 47UF 450V capacitor.
10:05If this capacitor weakens,
10:07then you will see the problem of your signal sticking.
10:11In this condition, you will have to change this capacitor.
10:15Whenever you change such capacitors,
10:18do it very carefully.
10:20Because even after the power wire comes out,
10:23volts are stored.
10:25So you don't have to touch it.
10:26First you have to short it like this.
10:28Do not touch it like this.
10:32Now let's talk about problem number 7.
10:35Friends, many times it happens that
10:37there is no power in your DTH card.
10:41But when you check on the supply jack,
10:44you get all the volts here.
10:46But you do not get volts on the card.
10:48The card does not work.
10:50In this condition, you will have to check your jack once.
10:54Because sometimes these legs get damaged.
10:59So in this condition, you have to remove it from here.
11:02Instead of this, you can either put another strip
11:05of any other SMPS,
11:07or you can directly connect it to the card via wiring.
11:10If you connect, then do it very carefully
11:12so that the connection does not go here and there.
11:14If you are putting a jack, then there is no problem.
11:16Just put it as it is.
11:19So friends, these were the problems
11:21that come in your DTH SMPS, not in the card.
11:25And because of these, your DTH does not work.
11:28And it looks like the card is broken.
11:30Now let's talk about the 2-pin short IC.
11:33Friends, there is a 2-pin short IC in this.
11:36The pin here is a 2-pin short.
11:39The 8-pin IC is a 2-pin short.
11:41But in some SMPS, the 8-pin IC is a 4-pin short.
11:45So keep in mind that
11:47you cannot replace your 2-pin short with an 8-pin short.
11:50And you cannot replace the 8-pin short with a 2-pin short.
11:54If you do this, then your IC will get damaged.
11:57It will not be of any use.
11:59Neither will your SMPS work.
12:01How many volts will you get to see on this 2-pin short IC?
12:04Let me also tell you that
12:06when your PCB does not have an IC.
12:08And the PCB is in perfect working condition.
12:12So see, you will get 350 on this pin.
12:14350, 0V, 0V, 0V, 0V.
12:18And here you will get 0V to see.
12:21On this pin, you will get 100 to 120V to see.
12:25Which have come from this resistance.
12:27You will get to see volts like this.
12:30If such volts come, then you understand that your PCB is correct.
12:34You have to check this when your PCB does not have an IC.
12:38Now let's talk about how many volts you will get to see on working condition with an IC.
12:43So if you put an IC, you will get 350V, 350V, 0V, 0V, 0V, 0V.
12:53On this pin, you will get 1 to 7V.
12:56On this pin, you will get 1 to 7V.
12:58If this is from your IC.
13:00And here its primary section is working properly.
13:04So you will get to see these volts on the IC.
13:07If you get to see these volts.
13:10Then only you check the secondary section.
13:13If not, then you check your primary section properly and repair it.
13:19If you want more details than this, then tell me.
13:22On which topic should I bring the video of SMPS?
13:24I will bring the video in more deep detail.
13:27Let's meet in the next video.
13:29If you like this video, then like and share it once.
13:32And you tell us by commenting how you like this video.
13:36Let's meet in the next video.
13:37Till then, thanks for watching.