Our company has been servicing and repairing APC uninterruptible power supplies for more than five years. Timely servicing of the APC uninterruptible power supply can greatly extend its service life. If you want to save your nerves, time and money. In addition, untimely maintenance of the APC UPS can lead not only to malfunctions of the APC UPS itself, but also harm the health of personnel. That is why we recommend promptly servicing your APC UPS.
The scope and frequency of maintenance of the APC uninterruptible power supply is determined using the manufacturer's instructions and operating conditions. We strongly recommend servicing APC uninterruptible power supplies at least once a year.
It is important to remember that the service of the APC UPS at the stage of putting it into operation is that our engineer performs an external inspection of the UPS, diagnostics, and commissioning. Our engineer also monitors the self-diagnosis cycle of the APC UPS, configures the most appropriate operating parameters, and, if necessary, trains personnel.
Service maintenance of APC uninterruptible power supplies includes: visiting the customer, conducting diagnostic work using APC service software, visual inspection of the UPS, preventing contamination of the APC uninterruptible power supply, replacing thermal interfaces if necessary, visual inspection of the APC UPS for electrolyte leaks from the battery, swelling of the battery and oxidized contacts. In addition, the APC IBR service includes monitoring the condition of electrical wires and connections, monitoring the condition and performance of power elements of the APC uninterruptible power supply, monitoring the condition and performance of the cooling system, and monitoring the condition of APC batteries. The following is checked and, if necessary, adjusted: rectifier module, battery charging module, inverter module, internal settings and operating parameters of the APC UPS, and the performance of the self-diagnosis system. After this service work on the APC UPS, the values of the electrical parameters of the APC uninterruptible power supply are measured, and the internal measuring circuits are calibrated. After all the work on setting up and calibrating the operating parameters of the APC UPS, our specialist draws up a report on the condition of the UPS with recommendations for further operation.
The BSM Technologies LLC company is pleased to offer you its services for installation, post-warranty and routine maintenance of APC UPSs of various types and configurations, as well as repair services for APC uninterruptible power supplies. All work will be completed as quickly and efficiently as possible in accordance with the work regulations.
The service contract for servicing APC uninterruptible power supplies must include such important points as the frequency of work, the inclusion of spare parts in the cost of the contract, the inclusion of the cost of repair work in the cost of the contract, the response time of service engineers in the event of failure of the APC uninterruptible power supply, the need 24-hour telephone support from a service engineer, repair time if necessary.
Call us by phone and our manager will advise you on any issue related to the service and repair of APC uninterruptible power supplies.
The company "Elemont+" carries out repair of uninterruptible power sources power supply (UPS repair) UPS in Moscow and the nearest cities of the Moscow region - Mytishchi, Korolev, Pushkino, Dolgoprudny. We work with both individuals and legal entities. It is possible to conclude a service agreement and repair, How uninterruptible power supplies, and office equipment in general. Payment can be made by bank transfer.
Repair of uninterruptible power supplies (UPS) at Elemont+
Working for a long time at a computer, developing a new program or simply typing text, a person does not always think about the fact that due to problems with the power supply, his many hours of work can go down the drain. A small voltage drop or sudden power outage will not allow time for the results to be saved. For these purposes, uninterruptible power supplies (UPS) are used, which are capable of maintaining the computer for some time without electricity. This time is enough to save the necessary files to your computer’s hard drive or removable drive and shut down the operating system correctly.
Repair of uninterruptible power supplies (UPS repair). General price list
| No. |
Equipment type |
Diagnostics and repair, rub. |
| 1 | Uninterruptible power supplies UPS up to 6 kVA | from 800 |
| 2 | Uninterruptible power supplies UPS from 6 kVa to 15 kVa | from 4400 |
| 3 | Uninterruptible power supplies UPS from 20 kVa to 40 kVa | from 5800 |
| 4 | Uninterruptible power supplies UPS from 120 kVa and above | from 6900 |
| 5 | Replacing UPS batteries | from 300 |
| 6 | Mains voltage stabilizer (depending on power) | from 800 |
Our company also carries out routine maintenance work on uninterruptible power supplies and voltage stabilizers. To estimate the cost of services, send your proposal by email This email address is being protected from spambots. You must have JavaScript enabled to view it.
Typical UPS faults
The main problem with almost all budget models of uninterruptible power supplies is the battery. The lion's share of low-price UPS comes without a voltage stabilization unit. In such models, protection against small voltage surges is provided by short-term switching to battery operation.
If the phenomenon of voltage drops is quite frequent in your network, then replacement battery like this UPS will be needed very soon. However, if such problems are not observed, then it is not advisable to spend money on purchasing a more expensive UPS.
An uninterruptible power supply is a rather complex device, which can be roughly divided into two blocks - a 12V to 220V mains converter, and a charger that performs the opposite function: 220V to 12V to recharge the battery. In most cases, repairing an uninterruptible power supply is very problematic and expensive. But it’s still worth a try - of course, there’s always a chance for a freebie in the form of a blown fuse :)
A friend of mine at the company threw away a non-working UPS model APC 500. But before using it for spare parts, I decided to try to revive it. And as it turned out, it was not in vain. First of all, we measure the voltage on the rechargeable gel battery. For the uninterruptible power supply to function, it must be within 10-14V. The voltage is normal, so there is no problem with the battery.
Now let's inspect the board itself and measure the power at key points in the circuit. I couldn’t find a native circuit diagram for the APC500 uninterruptible power supply, but here’s something similar. For better clarity, download the full version here. We check the powerful left-field transistors - the norm. Power to the electronic control part of the uninterruptible power supply comes from a small 15V mains transformer. We measure this voltage before the diode bridge, after, and after the 9V stabilizer.
And here is the first swallow. The 16V voltage after the filter enters the stabilizer chip, and the output is only a couple of volts. We replace it with a model of similar voltage and restore power to the control unit circuit.
The uninterruptible power supply began to crackle and buzz, but the 220V output was still not visible. We continue to carefully inspect the printed circuit board.
Another problem - one of the thin tracks burned out and had to be replaced with a thin wire. Now the APC500 uninterruptible power supply device is working without problems.
Testing it in real conditions, I came to the conclusion that the built-in buzzer signaling the absence of a network is screaming like crazy, and it wouldn’t hurt to calm it down a little. You can’t turn it off completely - since you won’t be able to hear the state of the battery in emergency mode (determined by the frequency of the signals), but you can and should make it quieter.
This is achieved by connecting a 500-800 Ohm resistor in series with the sound emitter. And finally, some advice to owners of uninterruptible power supply systems. If it sometimes turns off the load, there may be a problem with “dried up” capacitors. Connect the UPS to the input of a known good computer and see if the alarms stop.
The uninterruptible power supply sometimes incorrectly determines the capacity of lead batteries showing the status OK, but as soon as it switches to them, they suddenly run out and the load is “knocked out”. Make sure the terminals fit snugly and are not loose. Do not disconnect it from the network for a long time, making it impossible to keep the batteries constantly charged. Avoid deep discharges of batteries, leaving at least 10% capacity, after which you should turn off the uninterruptible power supply until the supply voltage is restored. At least once every three months, do a “training session”, discharging the battery to 10% and again charging the battery to full capacity.
Discuss the article REPAIR OF A UPS
Everyone knows that power surges are dangerous for household and computer equipment, as well as electronic components of power tools and industrial equipment. Unfortunately, power surges are not uncommon in the power grids of our cities, and even more so in villages. To protect equipment from these phenomena, the UPS device was invented, which is an abbreviation of its name: uninterruptible power supply. UPS is his English. abbreviation. Thanks to modern technologies, the UPS effectively smoothes out voltage surges and radio frequency interference, and in the event of a complete power outage, it switches to powering consumers from the backup battery.
Existing types of “uninterruptible power supply”
Today there are three main types of UPS:
Basic faults
Despite the fact that an uninterruptible power supply is designed to protect equipment, it itself is electronic equipment, which can also fail and require repair, regardless of its type and design. As a rule, repairs to an uninterruptible power supply are carried out at a service center or in a specialized workshop, but some types of breakdowns can be fixed at home, without resorting to the services of expensive specialists. It is precisely such malfunctions that can be eliminated, as they say, “on your knees,” that will be discussed in this part of the publication.
- The uninterruptible power supply beeps. There can be three reasons for this phenomenon: “everything is fine” when the device switches to a battery; “everything is bad” if the uninterruptible power supply does not pass the self-test; and "overload". Any UPS has an LED or LCD indicator for diagnostics.
- The UPS does not turn on. In fact, there are many reasons for this phenomenon: the power cable is damaged, the contact in the socket is poor, the fuse is blown, the battery is completely discharged. Most often, after storing the UPS for a long time, it is the battery that has completely lost its charge.
- The device does not support the load. There are only two types of possible malfunction: a failed battery or a breakdown in the electronics. In the first case, you can try to charge the battery. The second is definitely a service center.
- The uninterruptible power supply turns off after a short period of operation. The reason for the shutdown may be a high load exceeding the maximum power of the uninterruptible power supply itself. The cause of the shutdown may be other UPS faults, but their diagnosis and elimination should be carried out exclusively by service center specialists.
Simple methods for troubleshooting these problems
It has already been suggested who is to blame for the main problems of the UPS; now it remains to decide what to do. It turned out almost like Shakespeare! 
- UPS beeps. If the device beeps frequently during operation, this may indicate severe power outages. Here you need to understand the quality of the electrical network. If the cause of the squeak is overload, then you should first find out what device is creating it. To do this, you need to disconnect all load sources, turn on the uninterruptible power supply and connect one at a time. If this does not help, then the cause of the squeak may be an electronic problem, but with it, it is best to contact a service center.
- UPS does not turn on. First of all, you should check the connection of the network cable and fuses, which are usually located on the back wall of the device. If this is not the reason, then try leaving the device plugged in overnight, thus charging the battery. If the battery is not charged from an uninterruptible power supply, you can charge it in a special device (if available) or replace it with a known-good and charged battery. If this does not help, then most likely the problem lies much deeper, and in this case you will not be able to repair the UPS yourself. The solution is to contact specialists to diagnose and repair the UPS.
- UPS can't handle the load. First of all, you need to check how long the device can work without a network. If it works even a little, then the problem is most likely a loss of battery capacity. It is quite easy to check this by connecting a 100-watt incandescent lamp to the uninterruptible power supply as a load. The standard battery has a capacity of 7 A/h. A good battery will keep the lamp running for at least 20 minutes. If this time is reduced by half, the battery should be replaced.
- UPS shuts down. Again we blame the battery. If everything is fine with the battery and you are sure of its capacity, then the problem is in the electronics. Definitely go to the service center.
Our tips for self-repairing an uninterruptible power supply cover the most basic problems. If you are not confident in your knowledge and you do not have experience “communicating” with equipment operating at dangerous voltage, it is best to contact a specialist. You can find a complete list of repair and modernization services. If you have any unresolved problems with the operation of your PC, then feel free to contact the specialists of our company, we are always ready to take on any complex work. We work both in the city of Chelyabinsk and in the region.
