Restoration of a Vieta A-225 amplifier
Vieta is an audio equipment brand created in Barcelona in 1954 by the Vieta brothers, becoming a major reference for high-fidelity audio in Spain at the time. It still exists…
Circuits, hardware, and classical computing.
Vieta is an audio equipment brand created in Barcelona in 1954 by the Vieta brothers, becoming a major reference for high-fidelity audio in Spain at the time. It still exists…
Once again, another Optimus amplifier has fallen into my hands, and this one will be the first I actually own, since unlike other Optimus models, this one was given to…
Once I had tested the tubes (and while waiting to get new ones to replace those that were completely dead, as I showed in the first part), I went ahead…
Continuing with the restoration of the television, the first step I take is to check some of its valves using the μTracer3+: EF183 valve: As can be seen in the…
This TV came into my hands through a local online ad — I saw it at a good price and immediately thought it had to be mine. A valve (tube)…
This interesting amplifier was brought to me for general maintenance and a few modifications. Its owner wanted to convert the amplifier for use with guitar and bass, aiming to modify…
This interesting radio was given to me for repair by a teacher. She explained that it had belonged to her grandfather, and when it broke down, her mother tried to…
This small radio was brought to me for repair as a birthday gift for a friend’s parents — he wanted to give them the radio in working condition. At first…
When I bought this radio, it was completely dead — only a dial light would dimly turn on, the tubes didn’t seem to light up, and I started to smell…
This tabletop radio was working perfectly when I bought it. However, as it was being used, it developed some minor faults, which I fixed as they appeared. This radio has…