Let s talk about how long the replaced tube socket lasts

Is it that users don't dare to come to you anymore, or which tube socket you changed has never had a problem? :yw::d::d: View original post

I found some interesting problems in maintenance, the same header is used on different brands of TVs, and the time of use is different, some can be used for two years, and some can only be used for one year. We're in the south, and we change tubes from time to time, but this year it's a lot less than usual. View the original post

…We are in the southern region, the air is humid, and the pipe seat is changed ...... a yearI can't remember, but the business ......It's just one word - good: check out the original post".

The same header has different times on different machines. This is related to the voltage of the focusing pole of the machine. Second, it is related to the speech voltage of the TV.

If the feedback capacitance capacity of the base of the TV power tube decreases, the main voltage rises when the machine starts, and the seat tube is also one of the causes of damage. View the original post

I've tried before, a machine has changed three pipe sockets a month, eh, you say a lot of grievances, and it has been counted down by users. I'm also in the south here, and I don't want the moisture-proof technology of the tube seat to be too good. Otherwise, what are we going to do? View the original post

But it's true that there are very few such lives for us! If you use it well, it will be hard to spoil! You won't be able to use a poor header. View the original post

In our case, the "guerrillas" charge only five yuan for a pipe seat. It's so hard to do our business? View the original post

Go find a No. 14 nozzle (available at the veterinarian), solder the socket pins with a soldering iron, and use the nozzle to separate it from the circuit board. Replace with a header of the same specification. Soldered. Call it a day.

Solder the pins on the header with an electric soldering iron, and then use a needle to separate the pins from the circuit board (the pins are usually 7 or 9 pins). Do it one by one, and it will be done in 3 minutes, but be careful not to pull hard, and be careful that the picture tube is fragile.

Correct a point, steps 1 and 2 must be reversed, first pull out the tube socket and then move the soldering iron to disassemble the tube socket, can not first use the soldering iron to disassemble the tube socket and then pull out the tube socket, now most of the picture tube pins are directly led out from the glass tube neck, if it is heated it is easy to break, causing air leakage and causing the CRT to be scrapped. Here's what has been modified.

Replacing the header is the easiest thing to do, first you determine the header for this part, (see ** for the white part where the kine pins are connected).

1.Pull the tail plate of the picture tube and the tube socket from the picture tube, and pay attention to the action to be lightThe header is the part that connects the release plate to the picture tube, and the header is removed from the board with a soldering iron.

3.At this time, there is a wire on the tube base and a wire connected to the high-voltage package on the board, carefully observe, open the upper cover of the pipe base, this wire can be welded down. And just like that, the tube seat was dismantled.

Take the old one and buy one that is exactly the same. Come back and solder it according to the steps just now, and put the picture tube back on.

4.There is no technical content, it is welded, just be careful not to touch the picture tube, just handle it gently.

First cut off the power supply of the TV, disassemble the back cover, carefully unplug the circuit board behind the picture tube, use an electric soldering iron and multiple strands of wire to suck off the solder solder of the picture tube holder one by one, take out the picture tube holder, and take it to the electronics market to buy a same picture tube holder and solder it again.

Note that some CRT sockets have vacant solder pins, if the purchased CRT sockets are connected, you should remove this pin, or cross out the copper foil on the circuit board with a blade.

First, remove the VCB from the CRT neck, remove the solder from the tube seat foot with a soldering iron and a solder extractor, and the tube seat can be taken out, and the new tube holder can be inserted and soldered firmly.

There are also 7 legs in the pipe seat! It's easy to disassemble and assemble the headers! Use a solder extractor and soldering iron to get the solder off, and then break it off by hand! Choose the right header according to the number of feet!

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** As follows: $(

1.Remove the tube socket from the picture tube.

2.There are 9-11 pins in the CRT base, add tin to each foot with an electric soldering iron, and use a soldering gun to suck all the tin dry at one time when the tin point melts, so that the pin can be.

3.Repeat the second part and remove all the other header pins from the board.4Remove the header with forceps.

5.Replace a new header, insert the sight plate, attach it to the view plate, and solder each pin one by one.

6.G3 (focusing pole) needs to remove the white high-voltage wire before soldering.

It's a tube socket problem,That's right,Replacement method,You first open the back shell of the TV,Take a look at how many legs the tube socket is,Count it,After knowing how many feet,You go to the store to buy one back,It's about 10 yuan a piece。

When replacing, you first pull the socket from the picture tube, and then use an electric soldering iron to weld the socket down, but to unplug the power supply, you only need to pull out the high-voltage package and the rubber on the socket of the picture tube when discharging, and use a slotted screw with a handle to short-circuit the wire inside, and you will listen to a sound"Smack"sound, it means that the power is out, and the power supply must be unplugged during these operations,!!

Replace the header without putting the power of the high-voltage cap, but the filter capacitor of the 180V visual discharge power supply has residual power, so use a screwdriver to short-circuit the capacitor. Disassemble the pipe socket and buy it according to the sample, otherwise it will be reworked. If the TV is not turned on, and it has been there for a long time, the capacitor will also be automatically discharged, and there is no danger in disassembling it.

To operate with power off.

Listen to the second floor, that's it, high-voltage no discharge, and dismantle the pipe socket to get a suction welding gun, otherwise you don't have to dismantle.

After the TV is powered off, the high voltage package.

There will also be electrical contacts, so the repair of the circuit related to the high-voltage package must be discharged before it can be carried out. Be careful. But only change.

Kinescope. seat, it's okay if you don't discharge. There are two lines connected to the high-voltage package and the pipe base, one is the focusing voltage of about 1500V, and the other is the acceleration voltage of about 400V.

However, don't touch the thick red one that is connected to the picture tube.

High-voltage lines. After the power is off, there is still residual power in the high-voltage line, which can hurt people. If it will discharge, it is best to discharge before operating.

Appears after the CRT holder is replaced.

Shutters. The phenomenon has nothing to do with the CRT header,Old TVs have fine-tuning resistors around the decoding block、

Trim capacitors. (some also have inductors) to ensure that the color phase is correct, and two.

Chromatic aberration signal. of balance.

The digital TV set that came out later canceled most of the adjustment elements, and it was necessary to enter the bus to adjust.

After replacing the CRT socket, a scan line appears on the screen, and this situation occurs, I think your TV has been on for some years. First of all, the picture tube has aging, and there will be a back-sweep line when replaced with a new one, why the original tailstock will not appear back-scan, because the tailstock has been oxidized or green-embroidered, which increases the resistance between the tailstock and the tailstock, so that the acceleration pole voltage drops, the brightness decreases, and the back-sweep line is covered. So it is only necessary to reduce the accelerating pole voltage.

Take a closer look, foot position.

Is it right, and there is a foot at the beginning, or at the end.

Is it welded by you, some can't be welded, it has to be empty and disconnected.

The picture tube socket pin is not the same, some of the picture tube socket has a pin that is vacant, carefully compare, if the old one has a vacant pin, the new pin should be broken off or the corresponding one.

Copper foil. Just cross it out with a large piece.

Lanwei pipe seat, well-known all over the world, recommended to buy.

In your case, you have to teach even to open the back cover, or call someone to fix it, this work is very troublesome and dangerous! Don't end up losing more than you gain!

The owner of the building is really not very kind!! Just your jb mere 10 points who is rare! I kindly advised you to move out a sentence, it seems that you haven't learned a lot of things!

If you have learned about home appliance maintenance, will you disassemble the tube socket? Be careful if you use too much force, the picture tube will leak!

After I changed the tube socket of my Changhong color TV,Full screen back sweep line and blue screen,Replace back to the old one and turn on blurrily like the original,What's going on???

The tube socket is the picture tube socket, on the picture tube tail plate, that is, the visual release plate, it is generally white, the tool only needs an electric soldering iron, rosin solder wire, do not move the power supply and high voltage cap, so there is no need to discharge, change the tube socket can not touch the 300V filter capacitor and high-voltage nozzle, so it is not dangerous, when changing, pay attention to the model of the tube socket to be consistent, do not use too much force when holding the tail plate and pulling out the tube seat, so as not to damage the picture tube or pull off other leads.

The red line, it's thicker, right? That's the focus line, coming from a high-voltage pack, a few thousand volts. Since you change the tube seat, you have to take it off, first pick the buckle with a gong wire knife, open the cover and you can see it, the inside is welded, scalded off with a soldering iron, and then welded to the new tube seat as it is.

Pry open the socket focus box and see for yourself.

Focus line, there is a lock card on the side, the old one is not bad, just disassemble and see it.

You can also solder it on it, unplug it and weld it as you like!

It makes no difference to forget to adopt!

When changing the header of the picture tube, directly pull the header and the circuit board from the picture tube, and then replace the header of the picture tube with a soldering iron. It's safe and convenient.

Generally, the viewing plate is pulled out of the picture tube and then the tube seat is replaced.

Of course, you can, but this method has drawbacks: if the tube base is on the tail plate, it can be easily separated from the picture tube; Another problem is that it is easy to cause solder to fall onto the motherboard during soldering, causing other failures. I am not in favor of this approach.

It is recommended that you send it for repair.

Replacing the socket is a simple matter, but sometimes it doesn't have to be a bad deal.

In addition, although it is easy to replace him, it is only relative to the maintenance personnel.

CRT aging?

Filament circuits? Medium voltage circuits?