(Continuation from yesterday)

However, I could not find the cause of the failure in any way.

"I was able to confirm that the TR-10RDX was transmitting an FM carrier wave, but the audio was not riding the wave.

So I changed cables, sound sources, and various experiments, but I couldn't identify the cause of the problem.

I decided to dispose of the "TR-10RDX" and began to look into purchasing a replacement machine.

However, the TR-10RDX has already been discontinued. The "TR-10RDX" was exchanged at Yahoo! Auctions for a higher price than the list price.

Domestically, I couldn't find a similar product, and I also tried my hand at mail order in China, but I was hesitant when I saw the "one month delivery time" sign.

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To begin with, our house has a wireless WiFi signal in every corner of the house.

The fact that I can't use this is also very uncomfortable.

I wondered if it was possible to make an audio transmission device that uses a smartphone as a receiver, and I thought about designing a Raspi.

However, when I thought about the cost of designing a Raspi and developing an app for my phone, I couldn't do it because it was ridiculous.

Besides, I rejected this idea because it seemed certain that there would be a time lag between the image display and the audio.

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I thought I should give up FM transmission and wire the signal cable directly under the floor (I have done it before).

At that time, I found the second "TR-10RDX" that had been set up in my room.

I thought "Okay, I solved the problem", and I installed the second machine. However I confirmed that the exact same problem of the first machine occurred.

"The probability of two identical devices failing with exactly the same symptoms is so small in the real world as to be considered zero"

This is the usual way of systems studies.

After thoroughly inspecting the area around the device, it was discovered that there was a problem with the signal cable connections.

(However, I have also done follow-up testing with three signal cables, and to be honest, I can't explain this phenomenon, but I decided to forget about it.)

Anyway, I was be able to get it back in working order before.

This saved me from discarding the "TR-10RDX", which has a premium value.

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Speaking of which, during this process, I asked my wife how much she could budget to rebuild this system.

She said one word, "I'll leave it up to you" and she threw it to me.

Well, I'm a cheapskate, and I'm the type of person who delights in making my own products cheaply.

It's all DIY, from the installation of the LAN to the cupboards, bookcases and bike garage.

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Anyway, my wife's attitude of 'not speaking out about anything she cannot understand' is refreshing and beautiful.

When you're angry at they guy who cannot make anything, but feels like they are doing their job by meddling in my creations, even more so, I confirms my deep respect for my wife.