Pemecahan masalah Wi-Fi: panduan praktis

Before changing settings, get a baseline. Run our Tes Jaringan untuk memeriksa kecepatan unduh, latensi, dan jitter Anda. Catat angkanya, lalu bandingkan setelah setiap perbaikan di bawah ini agar Anda tahu apa yang benar-benar membantu.

1. Mulai ulang router dan modem Anda: cabut keduanya selama 30 detik, colokkan modem terlebih dahulu, tunggu sebentar, lalu router.
2. Mulai ulang perangkat yang bermasalah, separuh dari masalah Wi-Fi yang persisten adalah tumpukan jaringan yang macet pada perangkat, bukan jaringannya.
3. Periksa apakah perangkat lain di jaringan yang sama memiliki masalah yang sama. Jika hanya satu perangkat yang bermasalah, kesalahannya ada pada perangkat tersebut.
4. Pindah lebih dekat ke router untuk sementara waktu untuk mengesampingkan jarak dan interferensi.
5. Periksa halaman status atau aplikasi ISP Anda untuk mengetahui pemadaman yang diketahui di wilayah Anda.

Ini berarti perangkat Anda memiliki koneksi ke router, tetapi router tidak memiliki internet atau tidak meneruskannya.

1. Periksa apakah perangkat lain di Wi-Fi yang sama dapat menjelajah. Jika tidak ada yang bisa, masalahnya ada pada router atau koneksi ISP, bukan perangkat Anda.
2. Lihat lampu modem, lampu "internet" atau "online" harus menyala stabil; berkedip atau mati biasanya berarti tidak ada sinyal dari ISP.
3. Coba sambungkan komputer langsung ke modem dengan kabel Ethernet, lewati router sepenuhnya, untuk mengisolasi apakah router adalah masalahnya.
4. On Windows, run Settings > Network & internet > Status > Network troubleshooter.
5. Di macOS, tahan Option dan klik ikon Wi-Fi di bilah menu untuk melihat diagnostik terperinci, atau buka Wireless Diagnostics dari Spotlight.

Dugaan kegagalan perangkat keras yang sebenarnya ketika:

• Lampu router menunjukkan pola kesalahan perangkat keras (periksa manual untuk mengetahui arti lampu merah atau berkedip berulang kali pada model spesifik Anda).
• Reset pabrik dan pembaruan firmware tidak mengubah apa pun, dan masalah tetap terjadi pada setiap perangkat yang terhubung.
• Router berusia lebih dari 4-5 tahun dan kesulitan bahkan dengan sedikit perangkat yang terhubung, perangkat keras yang menua tidak dapat menangani beban lalu lintas modern dan standar Wi-Fi.
• Satu perangkat tertentu gagal mendapatkan sinyal yang baik di mana pun di dalam rumah sementara yang lain baik-baik saja di sana, antena Wi-Fi atau adaptor perangkat itu mungkin merupakan kesalahan sebenarnya, bukan jaringannya.

Jika Anda telah mengisolasi masalah pada koneksi ISP Anda daripada peralatan Anda sendiri, hubungi mereka secara langsung, tidak ada jumlah pemecahan masalah router yang dapat memperbaiki kesalahan di sisi mereka.

Slow Wi-Fi is really three distinct faults with three different fixes, and treating them as one problem is why so much troubleshooting goes nowhere. The first is low bandwidth, where pages load but large downloads crawl. The second is high latency, where bandwidth looks fine but everything feels sluggish and video calls stutter. The third is instability, where speed is fine most of the time but the connection drops repeatedly.

Measure before you change anything. Run a speed test next to the router and again where you actually use the device. A big gap between the two means a coverage problem inside your home, which no amount of contacting your provider will fix. Similar numbers in both places mean the incoming connection itself is the limit, and that is a conversation with your provider rather than a router setting.

Wi-Fi is radio, and radio is defeated by physics long before it is defeated by hardware. A router in a cupboard, behind a television, on the floor, or in a corner of the house is working against every law of signal propagation. Moving the same router to a central, elevated, open position frequently doubles usable coverage without spending anything.

• Concrete, brick and anything containing metal or water absorb signal heavily, including mirrors, radiators, fish tanks and foil-backed insulation.
• Every floor between the router and the device costs roughly as much signal as a thick wall.
• Microwave ovens, cordless phones and older baby monitors interfere directly with the 2.4GHz band.
• Keep the router at least a metre from other electronics and never inside a metal enclosure.
• If coverage still fails at the far end of the house, a mesh system beats a repeater, because repeaters halve throughput on the band they retransmit.

Most routers broadcast on both 2.4GHz and 5GHz, and newer ones add 6GHz. They behave very differently. 2.4GHz travels further and passes through walls better but carries less data and is heavily congested in flats and terraced housing. 5GHz is much faster with far less interference but loses strength quickly through solid walls.

• Use 5GHz for laptops, phones and streaming devices in the same or an adjacent room as the router.
• Use 2.4GHz for smart home devices, garden cameras and anything at the far edge of coverage.
• If both bands share one name, a device may cling to the weaker one, temporarily splitting the names helps diagnose it.
• On 2.4GHz choose channel 1, 6 or 11, they are the only three that do not overlap each other.

When a connection degrades gradually over days, the cause is usually accumulated state in the router rather than anything you did. A structured restart clears it properly, and the order matters.

1. Power off the modem and the router, and unplug both at the wall.
2. Wait a full sixty seconds so capacitors discharge and the provider releases the session.
3. Power the modem on first and wait for its lights to settle completely.
4. Power the router on and wait a further two minutes before testing.
5. Run a speed test from the same spot each time so you have comparable numbers over weeks.

Keep a short log of results with dates. If your provider disputes a performance problem, a series of timestamped measurements from the same location is far more persuasive than a description, and it also reveals patterns such as slowdowns only during evening peak hours, which point to network congestion rather than anything in your home.

Intermittent network problems are difficult to fix precisely because they are gone by the time anyone looks. A short written record turns a vague complaint into evidence, and it often reveals the cause on its own once a pattern appears.

• Test from the same two places each time, next to the router and where the problem occurs.
• Record download speed, upload speed, latency, the time of day and which band you were connected to.
• Note anything unusual, a new appliance, a neighbour's new router, a firmware update or a house full of guests.
• Test both wired and wireless where possible, the difference separates your home network from the incoming line.
• Keep at least a week of readings before drawing conclusions, single measurements mislead constantly.

With that record, decisions become straightforward. Consistent shortfalls on a wired connection belong to your provider, wireless-only shortfalls belong to placement and interference, and problems confined to particular hours point to congestion that no equipment change will remove.