September Update

Welcome to KF7LZE! I’m an amateur radio enthusiast and freelance electronics technician. I write this site with a goal to make it easy and enjoyable to put together electronics projects and perform your own repairs to save money, have fun, keep electronics out of landfills, and maybe learn a thing or two along the way. I write up many of the projects I complete on this blog, take in many kinds of equipment for diagnostics and repair, and run a  joint venture to sell the kits and parts to complete the same projects and repairs yourself at home with another hobbyist.

There are a lot of articles – feel free to check out some of the various Antique Radios and other Projects – but here are some I picked out as interesting highlights:

  • Round-Up of RTLSDR UpconvertersA nearly comprehensive listing, with pointers for where to buy, for the most common and most desired HF converters designed to allow the reception of HF or 6m and higher radio signals using any RTL2383U-based DVT-B dongle.
  • Bose 901 Active Equalizer Repair and Bose Projects ListI bring the classic Bose 901 Series 1 speakers back to their best performance by rebuilding the equalizer with modern precision components to replace the originals which have almost universally failed and introduced distortion or outright failure into the system. Lots of photos, and parts kits are available as well.
  • 1st Generation Mazda Miata MX-5 Airbag Computer RepairBad capacitors can strike anywhere; in this case it results in a permanent Code 10 for the car’s SRS system. It’s a short and sweet process to replace them, and the thermal fuse which triggers the Code 10 error. Many readers have found this article helpful, although not everyone is up for attempting this particular repair.
  • Samsung 225BW Monitor Capacitor ReplacementThis model, and similar aged Samsung monitors, are known from the Internet for failing power supply capacitors starting a few years ago. It’s easy and cheap to restore full functionality, and is definitely worth doing for a nice quality LCD monitor like this one.
  • 1934 Simplex Model P “Dual Band” Antique Radio Restoration: Featured on Hack-a-Day, a dead old radio with quite a few problems and very challenging wiring sings again, with many photos of the entire process along the way.

Feel free to leave a comment or question, and thanks for stopping in!

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