How to repair the crystal head if it is broken? Popular topics and practical solutions on the Internet in the past 10 days
Recently, network fault repair has become one of the hot topics, especially the problem of crystal head (RJ45 interface) damage, which has caused widespread discussion. The following are related topics and structured data that have been popular on the Internet in the past 10 days:
| hot topics | focus of discussion | heat index |
|---|---|---|
| Troubleshooting your home network | Common phenomena of poor crystal head contact | 82,000 |
| DIY network repair tools | Crimping pliers purchasing guide | 65,000 |
| Analysis of causes of network speed drop | Signal attenuation caused by interface oxidation | 91,000 |
1. Common symptoms of crystal head damage
1.Frequent network disconnection: Intermittent disconnection may occur when the plug is loose.
2.Internet speed drops abnormally: Oxidation of metal contacts causes the transmission rate to decrease by more than 50%
3.physical damage: The buckle is broken or the crystal head shell is cracked
2. Maintenance tool preparation list
| Tool name | Instructions for use | alternative |
|---|---|---|
| RJ45 crimping pliers | Fixed crystal head and network cable | Vice (not recommended) |
| line measuring instrument | Detect 8-core connectivity | Multimeter |
| Wire stripping knife | Peel off the sheath of the network cable | utility knife |
3. Step-by-step maintenance guide
Step 1: Diagnose the problem
Use a line tester to check whether the lights in sequence No. 1-8 are all on. If one side does not light up or flashes, you can confirm that the crystal head is faulty.
Step 2: Cut off old joints
Cut the network cable flatly 3cm away from the original crystal head, leaving enough space for re-making.
Step 3: Line order arrangement
Arranged according to T568B standard: orange-white, orange, green-white, blue, blue-white, green, brown-white, brown (make sure all wire cores are flush)
Step 4: Crimping operation
Insert the arranged wire core into the new crystal head, and use the crimping pliers to complete the fixation when you hear a "click" sound.
4. Preventive maintenance suggestions
1. Check the oxidation of the interface every six months
2. Avoid bending network cables at 90 degrees
3. It is recommended to use gold-plated crystal head (lifespan increased by 3 times)
5. Frequently Asked Questions
| question | solution |
|---|---|
| What to do if you don’t have professional tools? | Purchase a crimp-free crystal head (the cost is about 40% more expensive) |
| Multiple crimping failures | Check whether the wire core is exposed more than 5mm |
| The network cable is too short and cannot be repaired | Extension using RJ45 butt connector |
According to data from the Network Maintenance Forum, about 78% of home network failures can be solved by replacing the crystal head. Mastering this skill can not only save about 200 yuan in door-to-door service fees, but also quickly restore the network connection. Users are advised to save this guide for future reference.
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