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A computer motherboard is the central printed circuit board that electrically connects and coordinates the processor, RAM, storage devices, graphics hardware, USB devices, network interfaces, firmware, power su…
Modern LED TVs and computer monitors contain sophisticated electronic circuits involving AC mains power supplies, DC-DC converters, LED backlight drivers, processors, memory, display timing circuits, high-speed…
A screwdriver is one of the most widely used hand tools, but there is no single fixed number of screwdriver types in the world. There are dozens of major drive systems and hundreds of variations when different …
A Switch Mode Power Supply (SMPS) is one of the most important parts of a desktop computer or server. It converts AC mains electricity into regulated DC voltages required by the motherboard, processor, storage …
A computer keyboard may appear to be a simple input device, but modern keyboards can contain surprisingly sophisticated electronics. Depending on the design, a keyboard may include a key matrix, membrane layers…
Modern smartphones are compact computers built around highly integrated printed circuit boards (PCBs). A mobile phone motherboard may contain the processor, RAM, storage, power-management circuitry, charging sy…
Chip-level laptop repairing is the diagnosis and repair of faults directly on a laptop motherboard at the electronic component and circuit level. A normal laptop technician may replace complete parts such as RA…
An EPABX (Electronic Private Automatic Branch Exchange) is a private telephone switching system used in offices, factories, hotels, hospitals, schools, apartments, institutions, and other organizations to conne…
Inkjet and ink-tank printers combine precision mechanics, fluid-handling systems, sensors, motors, power electronics, digital control circuits, and firmware. A fault that appears to be a simple "printer not wor…
Enterprise servers are significantly more complex than ordinary desktop computers. A tower server may look similar to a high-end workstation, while a blade server may appear to be a compact modular computer, bu…
Laser toner cartridge refilling is much more than simply adding toner powder to an empty cartridge. A professional refill requires inspection, cleaning, correct toner selection, replacement of worn components, …
Laser printers remain widely used in Indian offices, schools, shops, accounting firms, hospitals, government offices, banks, warehouses and businesses because of their speed, low running cost and suitability fo…
Laser toner cartridge repairing is the process of diagnosing, cleaning, servicing, refilling, rebuilding, and testing toner cartridges used in laser printers and multifunction printers. A cartridge that produce…
Chip-level repairing of a laser printer means diagnosing and repairing faults at the electronic component, circuit, PCB, connector, sensor, power-supply, and controller-board level, rather than simply replacing…
Routers are specialized networking devices that combine digital processing, Ethernet interfaces, radio-frequency circuitry, flash storage, power conversion, and firmware in a compact PCB. When a router fails, r…