Channel Alexander Radio Repair and Homemade Products on YouTube - one of the most popular Russian-language resources for those who repair electronics, auto electrics and create useful homemade products. Whether you're looking for power supply rebuild circuits, chip soldering instructions, or ideas for garage projects, Alexander's videos offer step by step solutions with detailed explanations. The author specializes in repairing radio equipment, automotive electronic units (ECUs, alarms, radios) and adapting consumer electronics for non-standard tasks. The peculiarity of the channel is a minimalistic approach without unnecessary β€œwater”: only facts, diagrams and practical advice.

Unlike many bloggers, Alexander does not limit himself to reviews, but goes deep into technical nuances: for example, shows how to diagnose a malfunction with a multimeter, where to look for typical defects on boards, or how to modify devices for cars (for example, converting chargers to 12V). The videos are suitable for both beginners and experienced radio amateurs. At the same time, the author often answers questions in the comments, clarifying the details of the circuits or offering alternative solutions.

Who is Alexander Radioremont and how is his channel useful?

Alexander is a practicing electronics repairman with over 15 years of experience. On his channel he shares real cases from work: from restoring computer power supplies to repairing car controllers. The peculiarity of the author’s approach is the emphasis on diagnostics: he does not just show how to solder, but explains why did the problem occur? and how to prevent it in the future.

Among the key topics of the channel:

  • πŸ”§ Automotive electronics repair: ECU, immobilizers, alarms, audio systems.
  • πŸ’‘ Schemes and homemade products: power adapters, chargers, LED drivers.
  • πŸ” Troubleshooting: how to find a short circuit, check a transistor or capacitor.
  • πŸ› οΈ Tools and accessories: reviews of soldering stations, oscilloscopes, testers.

The channel will be especially useful:

  • πŸš— Car owners who want to repair electronics themselves (for example, restore a broken radio or alarm system).
  • πŸ’» Radio amateurs looking for DIY ideas or patterns to repeat.
  • πŸ”Œ Equipment repair technicians who need non-standard solutions (for example, converting an ATX power supply to other voltages).
πŸ“Š How often do you watch electronics repair videos?
Every week
Once a month
Only when the equipment breaks down
Never

Top 5 most useful video channel

There are more than 500 videos on the channel, but some of them have become real finds for viewers. Here are the five most popular videos with a brief description:

Video title Subject What will it teach Difficulty
DIY ATX power supply repair Restoring a computer's power supply Diagnostics of faults, replacement of capacitors, checking of the diode bridge Average
How to test a transistor with a multimeter Electronics Methodology for testing bipolar and field-effect transistors Lightweight
Remaking a charger for a car battery Auto electrics Modification of the power supply for charging a 12V battery Difficult
Pioneer car radio repair Audio systems Troubleshooting common problems (no sound, won’t turn on) Average
Homemade driver for high-power LEDs Lighting engineering Circuit and driver assembly for LED strips or spotlights Average

Important: before repeating any circuits from the channel, check the parameters of the elements (resistor values, types of transistors) - the author sometimes adapts solutions to specific details, which may differ from the standard ones.

πŸ’‘

If you are looking for a video on a specific problem, use a channel search with keywords, for example: "ECU repair VAZ 2110"or "remaking the power supply to 12V."

How to find the video you need: search and playlists

There are more than 500 videos on the channel, so it is important to be able to quickly find relevant information. Here are some ways:

  1. Search by keywords: In the YouTube search bar, enter a query like Alexander Radio repair [your problem]. For example: Alexander Radio repair immobilizer repair.
  2. Playlists: The author groups videos by topic. For example, there are playlists:
    • πŸ”Ή Automotive electronics repair
    • πŸ”Ή Schemes and homemade products
    • πŸ”Ή Troubleshooting
  • Comments: Under the video, alternative solutions or clarifications on circuits are often discussed. Before starting work, check the latest comments - the author or viewers may have added information.

    • If you haven't found a video for your problem, try:

    • πŸ” Clarify the request (for example, instead of β€œpower supply repair” write β€œpower supply repair” Dell DA-2").
    • πŸ“Œ See related videos in the YouTube sidebar - there are often related topics there.
    • πŸ’¬ Write a question in the comments under the video closest to the topic - the author or the community can suggest a solution.
    Where can I find the diagrams from the video?

    Alexander puts most of the schemes in the description under the video in the form of links to Google Drive or Yandex Disk. If the diagram is not in the description, check the comments - viewers often share their own options.

    Typical mistakes when repeating homemade products from the channel

    Even following Alexander’s instructions, beginners often make mistakes that lead to device inoperability or even damage. Here are the most common:

    ⚠️ Attention: Never connect homemade power supplies or chargers to a car battery without first testing it with a load resistor. Errors in the circuit can lead to a short circuit or damage to the battery.
    • πŸ”Œ Incorrect part values: For example, using a 16V capacitor instead of a 25V one or using a resistor with the wrong value. Always check the diagram!
    • πŸ”₯ Bad soldering: cold solders or overheated traces on the board are a common reason for the failure of homemade products. Use a soldering iron with temperature control (300-350Β°C) and flux.
    • ⚑ Ignoring polarity: incorrect connection of diodes, electrolytic capacitors or transistors leads to their instant failure.
    • πŸ“ Inaccurate measurementsNote: When tuning circuits (such as voltage regulators), use an accurate multimeter. An error of 0.5V can be critical.

    To avoid errors:

    1. Before assembly check all details for performance (for example, transistors - with a multimeter, capacitors - with an ESR meter).
    2. Assemble the circuit on a breadboard before soldering to make sure it works.
    3. Use protective elements: fuses, varistors, reverse protection diodes.

    The ratings of all parts have been checked|The circuit has been assembled on a breadboard|The polarity of the elements has been observed|There are protective elements (fuses)|The output voltage has been measured-->

    Auto electrics on the channel: what you can fix yourself

    One of the key areas of the channel is automotive electronics repair. Alexander shows how to diagnose and troubleshoot problems in:

    • πŸš— Electronic control units (ECU): typical problems are corrosion of tracks, failure of voltage stabilizers, communication errors with sensors.
    • πŸ”‘ Immobilizers and alarms: loss of connection with the key, malfunction of the central locking.
    • 🎡 Audio systems: repair of radio tape recorders, amplifiers, sound restoration.
    • πŸ”‹ Chargers and converters: adaptation of power supplies for battery charging, repair of inverters.

    Examples of real cases from the video:

    • πŸ”§ Recovery ECU January 5.1 after moisture: cleaning the board, replacing damaged elements, flashing firmware.
    • πŸ”Œ Repair alarm system StarLine with the problem of false alarms: replacing the relay, checking shock sensors.
    • πŸŽ›οΈ Diagnostics Pioneer radiosthat does not turn on: searching for a short circuit in the power circuit, replacing the fuse.

    Before undertaking auto electronics repair, consider:

    ⚠️ Attention: Not all units can be repaired in a garage. For example, modern ECUs with microcontrollers Infineon or NXP require specialized equipment for flashing. In such cases, it is better to turn to professionals.
    πŸ’‘

    Before repairing automotive electronics, always disconnect the battery and discharge high-voltage capacitors (for example, in ignition units).

    Tools that Alexander uses: what to buy to repeat projects

    To repeat homemade products or repair equipment using Alexander’s video, you will need a basic set of tools. Here's what the author uses most often:

    Tool Model/type What is it for? Price (approx.)
    Soldering station Quicko T12 or Hako FX-888 Precision soldering of SMD components 3 000–8 000 β‚½
    Multimeter UNI-T UT61E or Mastech MS8268 Voltage, resistance, diode testing 1 500–4 000 β‚½
    Oscilloscope Rigol DS1054Z or Hantek 6022BE Signal analysis, interference search 10 000–50 000 β‚½
    Signal generator JDS6600 or homemade on AD9850 Testing amplifiers and filters 2 000–15 000 β‚½
    Screwdriver set Wiha or PB Swiss (precision) Disassembling cases, working with small screws 1 000–3 000 β‚½

    If your budget is limited, you can start with the minimum set:

    • πŸ”§ Soldering iron 40–60 W with temperature control (TS100 - budget option).
    • πŸ“Š Multimeter (DT-830B suitable for starting, but it is better to take a model with measurement of capacitance of capacitors).
    • 🧲 Set of screwdrivers and tweezers for SMD installation.
    • πŸ”₯ Flux (LTI-120) and solder (Sn60Pb40).

    To work with auto electronics you will additionally need:

    • πŸ”‹ Voltage regulated power supply (for example, Riden RD6018) for testing circuits.
    • πŸ”Œ OBD-II adapter (for example, ELM327) for ECU diagnostics.
    • πŸ“‘ Programmer (for example, CH341A) for flashing memory chips.

    Where to get spare parts and components for homemade products

    To repeat projects from the channel Alexander Radio Repair and Homemade Products you will need radio components, boards and other components. Here's where you can buy them:

    • πŸ›’ AliExpress: cheap SMD components, modules, boards (delivery 2–4 weeks). Suitable for non-urgent projects.
    • 🏬 Local radio electronics stores: Chip and Dip, Sycamore, Master Keith. Fast, but more expensive.
    • πŸ”„ Used equipment: old power supplies, radios or TVs are a source of parts (transistors, diodes, radiators).
    • πŸ“¦ Groups on social networks: for example, Radio market on VKontakte, where they sell components from disassembly sites.

    Buying Tips:

    • πŸ“Œ For SMD components, order with a reserve - they are easily lost when soldering.
    • πŸ” Before purchasing, check the datasheets for details (for example, on the website Digi-Key or Mouser).
    • ⚠️ Avoid "no-name" components from AliExpress for critical circuits (for example, voltage stabilizers). It's better to overpay for branded ones (LM317, IRFZ44N).

    Example: If you need parts for homemade charger, search:

    • πŸ”Ή Transistors: IRF3205 or IRFZ44N.
    • πŸ”Ή Stabilizer: LM317 or TL431.
    • πŸ”Ή Diode bridge: KBPC2510 (10A).
    • πŸ”Ή Capacitors: electrolytes 2200 ΞΌF/25 V, ceramics 0.1 ΞΌF.

    FAQ: answers to frequently asked questions about the channel

    πŸ”Ή Where can I download the diagrams from Alexander’s video?

    The author places most of the schemes in the description under the video in the form of links to Google Drive or Yandex Disk. If there is no diagram, check:

    • Comments under the video - often viewers share their options.
    • Channel groups on social networks (for example, VKontakte).
    • Radio amateur forums (RadioKot, Cxem.net).
    πŸ”Ή Is it possible to repeat homemade products without experience?

    Yes, but start with simple projects, for example:

    • Assembling a power supply from an old ATX.
    • Converting laptop charging to 12V.
    • Simple LED driver.

    Complex projects (such as ECU repair or inverter assembly) require experience and tools.

    πŸ”Ή Which videos are suitable for repairing car electronics?

    Look for a playlist "Car electronics repair". Popular Topics:

    • ECU restoration January 5.1/7.2.
    • Alarm repair StarLine, Pandora.
    • Diagnosis of radio malfunctions Pioneer, Sony.
    πŸ”Ή How to contact Alexander for consultation?

    The author answers questions in:

    • Comments under the video on YouTube.
    • VKontakte group (link is usually in the channel description).
    • Email (if indicated in the profile).

    The answer may take several days - clarify the details of the problem in as much detail as possible (photo of the board, description of the symptoms).

    πŸ”Ή Does Alexander have a patreon or donations?

    Yes, the author accepts support through:

    • Patreon (link in channel description).
    • YuMoney or WebMoney (details are usually in the VK profile header).
    • Boosty (if you have an account).

    Donations help the author buy new video parts and equipment.