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Repair of LED nail lamp. Repair of ultraviolet lamp for drying nails. Advantages of the ProfExpert studio

The boy brought a lamp.

The transistors burned out, I replaced them with field switches from the motherboard, but they hiss, heat up and burn out.
- Do you have original transistors?
- Eat.

I looked, and my relatives there 2SC3303.

Why did you change them specifically to field devices from the motherboard?
- So they are the same.

And indeed, if you put them side by side, they are the same, well, unless, of course, you look closely at the markings. When he returned, he severely punished him, if he wants to achieve something and learn, never commit thoughtless actions.

An external inspection showed that the pads under the transistors were torn off and there was a bug instead of a 2.5 A fuse.

And, of course, the containers were replaced, how could we not do without it. I checked the timer, it turned out to be working.

Since I didn’t have 2SC3303, the pads were damaged, and I didn’t want to put it off, I decided to install the existing KT805IM there, which differ only in the location of the base and emitter pins. And the powerful “sole” of the 805s is incomparable with the platforms for the 2SC3303 in terms of cooling. I drilled the board, placed bushings under the flanges and soldered the transistors.

I connected everything, turned it on, the LEDs glowed, but the lamp did not. Okay, I’ll go read about these lamps, what voltage they require. And in one review I come across a phrase from a girl. “And your lamp doesn’t light either?” Here I am, a horse! I turn off the LEDs and the lamp lights up. Its visible glow is very weak and is illuminated by LED light. The renovation is complete.

The timer chip is not marked; just in case, I removed the state table from it.

It was not possible to synchronize the frequency of the high near-sinusoidal voltage generator; it is approximately 33 kHz.

CCFL (cold cathode fluorescent lamp) small Watt 5-6 maximum,

If we compare visually with the 9 W lamp that I saw before. But certainly not 12 watts, as it says on the cover.

The LED part is made on 4 aluminum strips, which are supplied with 12 Volts, with a small radiator in the form of a plate on each, the strips are connected in parallel. Each line has 3 double-crystal LEDs and a 3.9 Ohm resistor installed. This means that the crystals in each LED are connected in parallel, and the LEDs and resistor are connected in series. Each line is powered by a current of 0.35 A, therefore, the total power of the LED part is about 13-14 Watts, but not 24 Watts, as it is written on the cover. Although this is usual for the Chinese, they installed 24 crystals, which means there are 24 watts, and the fact that each crystal operates in half-watt mode does not bother anyone. The rulers are controlled through the 9926A assembly, in which the field strips are connected in parallel. If double-crystal LEDs fail, you won’t be able to find them and you’ll have to do something clever. The screws for fastening rulers and radiators do not have a slot, which is not very good.

The photo shows that these screws were unscrewed on the left and self-tapping screws were installed instead. It is not clear what housing the LEDs are made in, and there was no desire to unscrew the screws without a slot. The lamp is powered by a 12 V/3 A external power supply, which is quite light for such parameters,

Updated 01/10/2018

Attention!!! There are more and more cases when visitors confuse the address. Remember, we do not cooperate with other companies. Read the correct address, or better yet, call and we will explain how to get to us.

We carry out repairs of any complexity, ice lamps for nails, repairs of Ice/LED lamps for nail extensions, repairs of hybrid UV CCFL/LED lamps, repairs of LED+CCFL lamps from all manufacturers. Repair time is 30-40 minutes with you.

Updated 03/25/2017

"White shark"

Repair, sharpening in 1 hour.

Sharpening, restoration, maintenance of any hairdressing, manicure, pedicure instruments Repair of all brands and any complexity of LED/UF/CCFL/lamps of manicure devices, pedicure devices with a vacuum cleaner. Repair of hair clippers, hair dryers, curling irons. Sharpening and restoration of the entire range of grooming tools.

REPAIR IN 1 HOUR, WARRANTY FROM 6 MONTHS.

WE ARE LOCATED AT THREE ADDRESSES:

Call only the address you are interested in.

Complaints and suggestions by phone to the Administration +7-950-016-72-69 from 8-00 to 22-00. Seven days a week. Alexander.

Service center near three metro stations in the city center.

Metro "Spasskaya", "Sadovaya", "Sennaya Ploshchad"

Address: Sennaya Square, building 4.

Business Center "Sennaya 4" office 25

Opening hours and telephone: +7-953-146-69-59

From 11-00 to 19-00, Saturday until 17-00, Sunday closed

How to get there. By metro to any station: Spasskaya, Sadovaya, Sennaya Square, exit the metro and turn left, cross the street. Efimova and on the left where McDonald's used to be. Now the Good Communications store is 10 meters along the direction of travel, the entrance to the Sennaya 4 Business Center, 2nd floor, office 25. The distance from the metro is 50 meters. There is a coffee machine with aromatic bean coffee, and Wi-Fi.

By car: Parking on the street. Efimova, for freeplaces, there is a paid parking price of 100 rubles for three hours.

Click on the picture to enlarge.

Metro “Novocherkasskaya”

Z Anevsky Prospect, building 37 "Academy May: The first floor is where the Shpilka store is" Tel. +7-911-256-56-66.

Opening hours: Monday to Friday from 11-00 to 19-00, Saturday from 11-00 to 17-00, closed on Sunday.

How to get there. Metro: Novocherkasskaya Metro Station, exit 8 odd side, walk one block, 250 meters, cross Shaumyan Avenue, and literally 50 meters away is a detached 4-story modern gray building, glass doors, go inside the building, past security, again through the glass doors to the left. There is a Cafe, Wi-Fi. By car we drive into a pocket, there are always enough spaces, free parking.

Click on the picture to enlarge

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All representatives of the fair sex love to take care of their nails and often visit beauty salons for manicure procedures. It’s just that earlier, in order to get a permanent manicure, you had to look for a skilled manicure and pay a lot of money, but today it can be done at home. But you will need a special lamp and materials for this. It is important to choose a high-quality device in order to perform the necessary manipulations yourself. Knowing how to make a UV lamp for nails with your own hands, you can save a lot. Today we will not only understand this issue, but also take a closer look at the operating features of the most popular types of manicure dryers.

Features of operation and main characteristics of lamps for manicure

Electric lamps are quite popular among manicurists and lovers of creating high-quality and long-lasting nail art with their own hands. To purchase a ready-made device that meets your requirements, you should first familiarize yourself with the main characteristics, features, design and advantages of such devices. In addition, if you know them, stock up on everything you need, then you will get a decent nail dryer with your own hands.

Table lamps have the simplest design:

  • Ordinary body.
  • External control panel.
  • Special light bulbs.
  • Timer.
  • Fan.

Important! Some dryers have more functions, but their cost increases greatly due to this.

Let's look separately at each parameter that needs to be paid attention to:

  1. Dimensions. The most important difference between all lamps is their overall dimensions. There are models that allow you to dry permanent coating on both hands at the same time. When choosing a device for home use, you can safely choose a small lamp, without a timer or additional functions. It is inexpensive, takes up minimal space, and consumes energy sparingly.
  2. Power. This is also very important. Modern manicure installations have power ratings ranging from 9-54 watts. They can have from 1 to 4 special lamps at the same time. Low-power appliances are being used less and less, even for home use.

Important! The optimal option is 36 watts. Naturally, nail salons use more powerful models.

Types of nail dryers

When creating nail art, it should be taken into account that ultraviolet rays affect each layer of varnish separately. Therefore, the total time for the total effect of ultraviolet radiation on the entire nail plate should not exceed ten minutes. Otherwise, you will violate sanitary standards; your nails and skin may be seriously damaged. If you plan to do a multi-layer manicure yourself, then buy quick-drying coatings.

Currently there are the following types of lamps:

  • Ultraviolet dryers. All manicure devices are equipped with fluorescent or LED lamps. But the ultraviolet lamp for drying gel polish is the most affordable. With your own hands, you can use it to create real masterpieces on your nails; the main thing is to use it correctly and not violate established rules and regulations. This model can be purchased on the Internet, a specialized store, or even made by yourself.

Important! Their only disadvantage is the short life of the light bulbs used inside and the content of mercury in them that is hazardous to health.

  • LED lamps for nails. Today they are considered the best in this field. Such devices operate using LEDs, so the drying process is completely safe for health, economical, and fast. Polymerization takes place in just 20-30 seconds, meaning there is no need to wait three minutes. There are no harmful substances inside the lamp, so if it breaks, no one will be harmed.

Important! LEDs do not become less powerful over time.

To summarize, it becomes quite clear how they differ. LED lamps are something new for the fashion and beauty industry. Ultraviolet dryers are considered a proven and cheap option, which is once again proven by the current review of lamps for drying nails from various manufacturers. The main advantage of LEDs is their long service life, which devices with fluorescent lamps cannot boast of. But the most important thing is that LED models are absolutely safe.

Important! When planning to make such a device and use it at home, also read interesting information from our other publications:

Making a manicure lamp with your own hands

If you really want to save money, then try making your own drying device. A DIY manicure lamp is made using the lamp itself. Be sure to collect everything you need before starting work:

  • UV light bulb (inexpensive models, for example, those used in machines for checking banknotes).
  • Energy saving light bulb that fits a standard size socket.
  • Block for screws.
  • Lamp socket and wire with plug.

The lamp is quite inexpensive, but the rest of the materials can be found at home or in any lighting store. To make or replace diodes, you can buy them there. Repair and replacement of parts is also not difficult to do..

The assembly diagram of the ultraviolet dryer consists of the following steps:

  1. We screw a UV lamp onto the pads. Since it is quite difficult to find connectors, it is better to use pads. We connect the wires to the blocks. LAN cables are ideal in this case; you just need to twist the wires in them in pairs and use them together.
  2. We take out the plate with electronics from the energy-saving lamp. We cut off a couple of wires coming out of it to the bulb, then unsolder it and solder the twisted wires in pairs in their place. We reassemble the base with electronics. As a result, we will have a power source for our lamp.
  3. We attach the device using a plastic strip to the base and get the base of the dryer.
  4. You can use a ready-made case or make it yourself from an old computer power supply.
  5. We insert the lamp into the housing.

Important! Once you have practiced with the device you assembled yourself, you may still want to buy a more effective device from the professional series. Or maybe you even want to develop your business in this direction. Then our articles will help you:


To apply shellac at home, we have a UV (ultraviolet) lamp with simple fluorescent bulbs. Therefore, there is no need to buy a ready-made LED UV lamp, but I’m curious what will come of it. At first glance, all I could find on the Internet was this:

The main part of my lamp is UV LEDs, ordered from aliexpress.


In appearance and size, they are not much different from ordinary 1-3W bead-type LEDs; unlike LEDs for lighting, we can clearly see the crystal under the transparent cap.

The indicated characteristics of the LED on the seller’s page can be trusted, but unfortunately I do not have drivers with a rated current of 700mA, so I used those that were on hand.

To test the operation of the process, I used a 3x3W driver (I don’t describe which one, since it was used for testing) and UV LEDs soldered to the heat sink:


Characteristics of ultraviolet LEDs declared by the seller:

Emitting Color: UV/Ultra-Violet
Light Intensity: 6-10LM
Luminous flux angle: 120 degrees
DC voltage forward (VF) : DC 3.2V ~ 3.6V
Constant forward current (IF) : 700mA
Wavelength: 395nm~400nm

- Shenzhen OT-LED Technology Co.,Ltd
I would not like to write nonsense, so I will keep the information I found and not verified about the necessary exact data on the wavelength for polarizing ultraviolet shellac to myself, and I will issue a conclusion only after careful testing.

The “scheme” assembled on my knee looked like this:

. Within a few seconds I had a completely cured varnish. This prompted me to continue the test.

It was decided to create an experimental model or prototype (whatever you want) of an LED UV LED lamp, sorry for the “nonsense”)))

To cool and remove excess heat, I used the metal profiles previously mentioned in the article ():

.
Attention! This profile is not sufficient to cool constantly switched on LEDs, so their use is limited to short-term operation only. The time before heating to 60 degrees and cooling to room temperature will be found experimentally in the article testing a UV lamp (in development).

A moisture-proof soldered box is used as a housing. The modification of this box is not very big, I only had to level the bottom by placing fiberboard and gluing it on the top side with double-sided tape for a layer of foil (reflector).


From the front wide part, we cut a large hole under the arm.


Since this is a test sample and not the final version, the moment the light falls from the side is not taken into account for uniform polarization of all nails, but as you can see in the photo:


And of course, let’s not forget about powering our lamps. As I said above, as a driver I use the existing 9x3W, ready-made heat sink plates soldered to LEDs and connected in series. Unfortunately, that's all. We will continue to test the operation of the lamp, as well as the reliability and wear time of shellac after polarizing this lamp.

The first photos of the assembled lamp and the result of application. 10 days later:


Your face reminds me of Paris, it makes me want to go.

- Positive of the day)))

Continued testing, second 2 weeks of wear in the article: .

While the factory-bought UV lamp for professional manicure is gathering dust on the shelf, I decided to improve the assembled one. DIY UV lamp for nails. For starters...