Advice 1: How to disassemble the Megaphone the Modem

A modem is a device for data transmission, which converts digital signals into analog and Vice versa. With it, the personal computer connects to the Internet. 3G modems MegaFon have become very popular today, but the farther from a base station, the signal is weaker. Because more and more users are forced to do under a exterior antenna, which is necessary first to disassemble the device.
How to disassemble the Megaphone the Modem
You will need
  • - a screw-driver "asterisk";
  • - flat screwdriver;
  • - a scalpel;
  • - a plastic card from a SIM card.
Instruction
1
Unscrew with a screwdriver "star" retaining bolts on the lid of the modem hidden under small round stickers, which symbolize a guarantee.
2
To open the plastic casing without breaking it, you need a special tool. For its production use card the SIM. Prune it a little to make one of the edges sharper.
3
Insert the sharp edge of the card into the gap between a USB modem and a plastic cover and slightly lift up this lever the lid of the device.
4
In the resulting gap, insert a thin, sharp scalpel and press them on the inner cover latches, slowly pushing her. Do all this slowly, carefully, sure movements, not to break the clips and not left on the outside of the opening marks.
5
When you release the scalpel cover with one hand, slowly open the modem, unhook it from the latches and the other side. If everything is done correctly, so it is possible to disassemble the modem many times, not afraid to break.
6
To get mini PCI-E card module antenna connector, Unscrew with a screwdriver "star" two of the bolt. Flat screwdriver, carefully disconnect the two mini coax cables. Thus you will get completely disassembled the modem.
Note
Once you loosen the mounting bolts of the modem, the warranty is immediately lost. Remember that any careless action, which is caused by ignorance of the art may lead to breakage of the modem. Therefore, all actions on analysis of equipment is done at your own risk.
Useful advice
Try not to touch with your fingers the inside of the modem as static electricity on the fingertip may spoil them. If it is absolutely necessary – to ground yourself: touch the pre to the tap water or battery. So for a while you will get rid of static electricity.

Advice 2: How to disassemble engine cleaner

Very often if you use the vacuum cleaner without the filter, begins to buzz the engine, and appliances becomes impossible to work. If urgently not to take measures and not to solve the problem, you can simply lose vacuum. For this you need to know how to disassemble and clean the engine.
How to disassemble engine cleaner
Instruction
1
Remove from the body of the vacuum cleaner vozduhonezavisimymi unit. Then remove the fan shroud and loosen the nut on the axis of the engine cleaner. Please note that the nut may have in some cases left-hand threads, so that the cranks do not press hard so as not to disrupt her.
2
Off-axis alternating aluminum wheels fan (without blades and with blades). Also remove the bushing, which separates one disc from another. Be careful and remember the sequence in which housed the disks and the sleeve, so that during Assembly you could install them in exactly the same order. Play as the withdrawal in order on a clean shop cloth.
3
Then remove the screws that hold the clamp on the motor bearings, and remove the covers. If you took the engine apart, change the grease. This requires to remove old grease and wash the bearings with gasoline. Make sure that the gasoline did not get to the coil. Fill the bearings with grease.
4
Build the engine in the reverse order. During Assembly of the vacuum cleaner, make sure that you have left the "extra detail" on the inside, because if it enters the fan, these items could destroy it. After Assembly make sure the fan runs freely by turning the anchor by hand. It needs to make 10-15 revolutions without the crunch and extraneous sounds – the sound should be smooth.
5
For good engine operation to periodically change or clean the filter clean the intake air. If this is not done, the engine will overheat due to adhering of dust and, eventually, burn out. Vacuum cleaner requires constant care – change lubricant every two years and annually check the condition of the engine, even if it does not give reason for concern. Then your vacuum cleaner will serve you for a long time and regularly and do not have to do costly repairs.

Advice 3: How to make a antenna for modem MegaFon



If you bought a 3G modem to replace the old one and connected it to the computer, and the speed is still the same low, it is usually associated with a weak network signal in your area. The use of an external antenna may fix the situation.
How to make a antenna for modem MegaFon
You will need
  • modem;
  • - external and internal antenna;
  • - coaxial cable.
Instruction
1
Check out coverage of the 3G network of mobile operator MegaFon, to do this, go to his website and find a map of 3G coverage of the network. If you are in the area or on its border, but the modem is not connected to the Internet, so the signal level is too weak. This means that it is below the limit of sensitivity of the modem. Use the input gain external antenna for the modem. It can provide increased speed in half, due to the increase of the ratio signal/noise.
2
Since all modems are made in the format of the stick, they do not provide the ability to connect an external antenna. Take advantage of its connection to the principle of the contactless antenna of the device, the re-emission signal. Take an external antenna to receive the signal from the street and internal to redirect the signal to the modem, connect them to a cable Assembly, made of coaxial cable. The frequency of small damping is 2100 MHz. Use to strengthen signal modem external antenna's 12/1900-2170, which will rabotat on the 3G frequency.
3
Use to redirect the signal to the internal modem antenna model AP-800/2500-360. It looks like a flat plate the size of a business card, having a circular directivity pattern. Attach the antenna with adhesive tape to the modem, thus you will get a contactless coupler. Connect the antennas to each other using coaxial cable brand 8D-FB. Pay close attention to its quality, or the antenna connection to the modem will lose all meaning because there will be significant signal loss. You must also be careful when installing the outdoor antenna. Determine accurate direction to the station, and if unknown, determine it empirically using laptop and connected the modem.
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