Deep Space Fleet

After a while, the radio returned to normal and the music on the tape was played.

"Sweet honey, you smile very sweetly, as if flowers bloom in the spring breeze ..."

The sound of an unknown singer is very good.

"This is the problem. It was the same when it was started, and it was slowly getting better. I don't know why ..."

Uncle Xun said, her heart suddenly stunned.

He used to find several businesses and wanted to fix it.

But these businesses dare not accept the job, because once repaired, they will lose money.

古老 These ancient electronic products are very delicate. Maybe after a few touches, a certain route inside is broken.

What's more, various parts of the radio have long been discontinued.

Even if it is produced in a factory, it cannot be sold at any price. Antique antiques need an "ancient" character. If modern electronic components are mounted on ancient instruments, what is the difference between applying a piece of dog skin plaster?

Anyway, it can still play normally, so my aunt-in-law can only use it alive.

Zhang Yuan eagerly walked to the radio: "Let me fix it!"

那 "So ... oh."

"You try it."

Is obviously a tone of distrust.

Uncle Gu's heart was bitter, and he felt overwhelmed.

虽然 Although my nephew is awesome, what is a "spaceship management" specialty, and can even repair a spaceship, the difference between repairing a spaceship and repairing a radio is ten thousand miles!

The most important thing is that it is impossible for your nephew to lose money if you repair it!

I saw Zhang Yuan's hands touching the radio, and his heart slammed hard!

But because of his face, he couldn't say much, just looked back at his daughter fiercely.

Ye Yeqingqing showed no sign of weakness, and stared back at her father with a smile on her heart. In her opinion, this old antique has long been discontinued, and even design drawings have long been lost. Who else can repair it?

Especially ... the handling of minor problems is far greater than major problems.

I knocked down my cousin, the "child of someone else's house", and was able to breathe a sigh of relief, and it seemed to prove that "reading is useless". In the future, I can read less

At this point, Zhang Yuan has unscrewed the radio ’s casing screws, exposing the electronic structure inside: switches, power supplies, variable capacitors, potentiometers, magnetic rods, etc., which are not too complicated.

It is these uncomplicated things that have withstood the test of time and survived to the present.

The more complicated and delicate things are, the more easily they can be damaged. In the 21st century, Warwick and Apple smartphones are rarely kept, and each one can be sold at a high price.

Zhang Yuanyuan has never repaired this old antique, this is a brand new challenge.

If he put it in the past, he might be able to avoid it, but now there is a wonderful desire for exploration in his heart.

Took a deep breath, and his brain began to move rapidly.

试图 He tried to speculate on how the radio worked from what he had learned in the past.

Every electronic instrument plays electronic and magnetic fields, which are similar in nature. The working principle of the radio is nothing more than converting audio signals through various circuit structures.

"This radio has just been used for tape broadcasting, so antennas, variable capacitors, and detection circuits are basically useless. It is unlikely that there is an error in these parts at the beginning ..."

"Will it be a tape problem?"

Zhang Yuan took the tape out, reset it manually, and stuffed it back.

"Sweet, you smile so sweet ..."

This time, there was no noise in the middle from the beginning.

Zhang Yuan changed another tape and pressed the play button.

"I can't stop loving you ..."

Still no noise.

所以 "So, it should not be for the sake of the tape."

Uncle Hu watched him try again and again, getting more and more anxious, and quickly said: "Only there will be noisy sounds at the beginning of the startup, there will be no more. It really is not possible ... just forget it ..."

His heart was always lingering, just hoping that his nephew could retreat.

Don't fix it.

Master, do n’t fix it!

"Is this only the beginning?" Zhang Yuan waited for a while, and took the radio under the air conditioner for another ten minutes.

Plug the power back in, and sure enough, the cooled radio started yelling again.

"Buzz-buzz!"

The piercing voice made his liver hurt.

After a while, it stopped.

Zhang Yuan thoughtfully.

The whole process of troubleshooting is a bit similar to debugging in computer programming. Now that the bug has been determined, you just need to find the cause and resolve it.

Zhang Yuan paced back and forth in the room, thinking quickly about the suspicious points.

不良 Poor contact?

Wrong, poor contact will not yell at first, but will stop working intermittently.

"It is not a phenomenon of electric current."

Think about it, it may be a warm-up problem.

老式 This old radio uses vacuum tube technology.

There are two main devices in this nearly vacuum-tight cavity: one is called a heating electrode, which is located in the center of the tube and emits light during work; the other is composed of a cathode, a metal grid and a metal plate.

"If the vacuum tube warms up in the circuit inconsistently, it will cause the voltage of the entire circuit to be disordered. This part of the disordered voltage ~ www.readwn.com ~ is mistakenly transmitted to the amplifier circuit behind, so when there is no electrical signal, the recorder shouting."

而 "Finally, when the RF line is fully heated, the voltage of the vacuum tube has been adjusted, everything is back to normal, and the recorder works normally."

远 Zhang Yuan clapped his hands, this should be the reason!

Uncle Xiao saw that Zhang Yuan was pacing back and forth, just eating fruit constantly, and he felt that his mood was bad: where would a normal repairman walk around.

Ye Ye Qingqing just pouting and laughing.

Zhang Yuan lowered his head and squinted his eyes, and he began to take down the vacuum tubes one by one.

He really started to tear down!

I……

Uncle Xiao was just crying without tears, and he stunned: "Zhang Yuan, it's really impossible, let's go to a professional antique repair shop! I know a very good master ... but the price is a little bit higher."

Zhang Yuan turned a blind eye and devoted himself to his work. He really didn't hear what his uncle said.

He re-arranged the arrangement of the vacuum tubes, and then screwed on each screw, waiting for the radio to cool.

Uncle Tong's face flushed, and he couldn't help whispering in his heart: Will it not break? Is there an extra part?

Even Auntie can't stand it anymore: "I'm nervous about you, just a radio, why?"

"What do you know? Even if it's just a radio, do you know its history, it's ..."

Zhang Yuan didn't answer, just pressed the play button.

卡 嚓 ——

The radio is like a docile sheep, obediently warming up, no more noise.

"Sweet, you smile sweetly ..."

The feminine song echoed in the air.