왜 컴퓨터 매장에서는 증상이 안 나올까요? (It doesn't work at home, but will it work normally in the computer store?)

왜 컴퓨터 매장에서는 증상이 안 나올까요?

 

간헐적인 컴퓨터 불량 증상은 수리가 어렵습니다.

 

 

 

집에서는 이상 컴퓨터 매장에서는 정상

https://blog.naver.com/PostView.naver?blogId=dongtancom&logNo=223137694919&parentCategoryNo=&categoryNo=&viewDate=&isShowPopularPosts=false&from=postList 

집에서는 화면 안 켜지는데, 컴퓨터 매장에서는 되는 이유?

 

 

 

 

점검하기 가장 어려운 본체

https://blog.naver.com/PostView.naver?blogId=dongtancom&logNo=223001984708 

점검하기 제일 어려운 컴퓨터 수리 건

 

 

 

철 가시와 간헐적인 컴퓨터 고장

https://blog.naver.com/PostView.naver?blogId=dongtancom&logNo=221453175558 

철 가시 & 집에서는 안되다가 컴퓨터 매장에서 잘 되는 오류 증상

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It doesn't work at home, but will it work normally in the computer store?

 

 

The screen doesn't turn on at home, but why does it work at the computer store?

 

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Dongtan Computer · 2023.6.24.18:00

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I don't know why!

 

Sometimes you don't know even if you look at the computer!

 

The more you experience computers, the more you find out you don't know.

 

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This is a computer that was received on June 23, 2023.

 

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The reception symptom was that the monitor was not turned on at home. The computer store prints the screen normally. If it turns on well, I don't know what the problem is. If you don't have symptoms, you have to stamp and fix suspicious parts, but if you take them, it's highly likely that they're not correct, so if you're re-stocked as a fraud and branded as impostor, don't stamp suspicious parts.

 

 

 

 

 

 

The monitor doesn't turn on at home, but it turns on at the computer store.

 

The computer above was not charged for the basic inspection fee, but he just took it home. If I don't have symptoms like this and it works normally, it may be difficult to charge the basic inspection fee.

 

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In the case of the computer above, the computer screen turns on right away when you register, so you can take it within 5 minutes, and if you leave it to look at it and check it further, you will be charged even if you can't find the cause. If I can't accept the inspection fee when I haven't even fixed it, it's hard for me to get a job. I think I will take a break at that time or write on the Internet or do something else.

 

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If it's a computer that I assembled and sold, I'll take responsibility for finding the cause, but I think it'll be difficult to buy it on the Internet and get free service at the local computer store. Intermittent defective computers often check, but they can't pay for it, and there will be disputes later, so when registering a computer failure, computers that don't have any symptoms of failure will not be accepted.

 

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I think the most difficult repair during the computer inspection is to check the computer that works normally. It may not be a problem with the computer's body, or there may be a compatibility = compatibility problem between the body and the peripheral, but the symptoms may not appear even after checking the body on a back day. How much do you think I'll get paid even if I check it for a few days and decide that the computer's body is normal? And I took my computer home, and if it doesn't work at home, it's a terrible case.

 

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I got a "computer, monitor, laptop" from an acquaintance, and I took it out of the warehouse, and I picked it up,

 

There is a customer who just wants to check if the computer-monitor-laptop is working properly by plugging in a monitor or laptop adapter. In that case, if I tell you the basic inspection cost in advance before the inspection, I connect a monitor and an adapter to check it simply, what money should I give? There are people like that sometimes. If it's not the main body I sold, I can take care of it no matter how simple the work is at the basic inspection fee. If you don't accept the fee, it's not because the customer decides it, but the person who works is judging it and charging the basic cost.

 

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If it's not the product I sold, there are few free inspections.

 

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Cases of computer inspection and repair that does not turn on the monitor at home and works normally when you come to the computer store

 

If there is a compatibility issue between the Samsung Monitor and the AMD Radeon graphics card

 

[Computer repair case that doesn't turn on monitor] => It's shipped as it works normally in the computer store

 

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Not too long ago, there was a main body that left the computer monitor not turning on, but it turns on well on my monitor. There were no symptoms of failure for about an hour, so I shipped it for 11,000 won for the basic inspection fee. By the way, you took your computer to your house and brought back the "Monitor and Computer" because the screen doesn't come up when you plug in the monitor at home.

 

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[You brought all the Samsung monitors, the main body, and the cable. ]

 

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① I connected your computer to my monitor (Samsung Monitor-Curved). => The screen looks good.

 

=> With the computer on, connect the HDMI cable to the guest Samsung monitor (plane). => The screen looks good.

 

=> Customer: It's a ghost. It definitely didn't work at home, but even LG monitors from other manufacturers didn't turn on the screen, but the monitor that didn't come out at the computer store came out, so the customer is also wondering.

 

The above test is to enter the Windows desktop with my monitor and then connect the customer's monitor

 

Normally, when Windows is running, smooth communication between the monitor and the graphics card is possible.

 

Sometimes there are monitors or graphics cards that can't be represented and are passed on the desktop.

 

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② I connected your computer to your Samsung monitor from the beginning and turned it on, but the => screen doesn't come out.

 

(Now you have the symptoms of failure that you can't do at home. Once repeated symptoms are implemented, the check is available now.)

 

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"Guess, make a hypothesis." = It seems that the signal exchange between the computer's main body and the monitor is not going well.

 

=> There was an unknown compatibility issue between the graphics card and the monitor. (Frequency issue not supported by monitor Hz)

 

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If you summarize it in a single line and get a result or a hint, the complicated problem seems simple.

 

After diagnosing/checking/testing this symptom, it took approximately ~2 hours to find compatibility issues between the AMD graphics card and the Samsung monitor.

 

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When I left my computer and monitor again, I paid 11,000 won for the inspection (which I received even though I couldn't fix it), so are you going to let it go for free this time? (Is there an additional charge?). There were no symptoms when I left it for the first time, and I didn't replace anything, so I was going to take the computer without paying for the inspection. I did a basic (window, 2 memory, graphics card, etc.) behavior test for about 30 minutes, and I got the basic cost even if I didn't find any failure symptoms (even though I didn't find it. If the parts were disassembled and checked for more than an hour, I would have charged for the disassembly inspection. It's because I bought it on the Internet, not on the computer I sold.

 

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Finding parts compatibility/compatibility issues takes longer and is more difficult than reinstalling windows. There are many parts to cross-test. So, even if the inspection cannot be carried out because of the basic inspection fee and the failure symptoms cannot be found, I said that there would be an additional cost, agreed, and conducted a night inspection after the business was closed.

 

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If I couldn't accept the cost of the additional inspection, I would have stopped because there was no point in inspecting it. Compatibility issues between parts are difficult for me, too. It's one of the things I want to get off work quickly and not work overtime. If you find a compatibility problem, the answer can be summarized in a single line, but the results alone seem simple. The "inspection/repair cost" is also difficult to be recognized because the parts have not been replaced. It's a time-consuming task. (Compare with difficult symptoms that take more than an hour to inspect may require an additional "Inspection/Repair Basic Cost". Example) Intermittent symptom repair starts at KRW 66,000~)

 

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Graphics cards, motherboards, CPUs, monitors, HDMI, DVI cables, etc

 

I took 140 photos of the parts change/cross test alone.

 

Typical and common computer repair photos are taken in about 10 photos.

 

If it is fixed at the same time as the inspection, you may miss the timing to take a picture.

 

 

 

 

 

 

This is a record of the process of checking 1 computer with compatibility problems. (The typical repair process takes up to 10 photos.)

 

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