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I haven't seen them either, but I have seen fake "Cat6" cables that weren't twisted pair. The ISP-provided cables are at least legitimate Cat5e and have no problem handling gigabit. I wouldn't be surprised if there were Amazon scammers selling cables with only two pairs and four dummy wires (empty plastic tubes to fill the RJ45 connectors for looks) labeled "Cat8" or something else that doesn't exist. -
most devices other than gaming pc's cant really shift data faster than 100Mb over the card even if it's gigabit so it's not much of a concern.
when i did network testing i used an old SGI computer just so i could use a 64bit network adapter.
the cables are a different matter - i have never seen a cable with only 2 pairs - not even the crap you get free with a router from the isp!
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Maximum speed should be marked on network ports
I noted that a number of consumer entertainment devices have the maximum speed marked on the wired network port and considering that there are broadband plans faster than 100 Mbit, the wired network port can be a bottleneck since some routers do not have Gigabit (only 100 Mbit) support for the WAN port let alone the wired network ports.
One other thing: Certain low cost network cables only have two pairs which limits speed to 100 Mbit.
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Fixed a 9 year old UN55JU650 by replacing backlight. Original backlight LED was still working after 27k! hours but terrible picture of course. Few LEDs were out, 5-6 lens fell off (bright white spots) and another few popped off with slightest force. Surviving LEDs were all slightly blue so picture has a blue tint.
This TV runs older Tizen OS (updated to latest version, see pic) and have problems with network (wifi or ethernet) connection. The Tizen UI frequently switch to coax input source while changing content sources. . If no good signal (coax not connected, no prior antenna/cable... -
I just bought a new ThinkPad laptop and I need to connect it to my home network. I have several computers on my network and can see each other in File Explorer and the older ones can communicate with each other (even with the new one) but the ThinkPad can see the other computers but can't communicate with them. I get the (network error 0x80070035 The network path not found). I tried several scenarios that I found on line but none of them worked?? Since the other computers on the network can communicate fine I'm assuming the problem is with the setup of the ThinkPad? All computers are running Windows...
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Hello, I have a SYMSI70 gas heater board, which has issues with its primary side power supply, controlled by TOP247Y chip.
When I replace a TOP247Y it explode in 1 second. I have desoldered transformer and measured a winding ratio, so transformer looks like OK.
Transformer:
|Info| Primary | Aux | AB | CD|
|-|----------|----------|-|-|
|Ratio|1|25|40|12|
|Voltage AC|230V|9.2V|5.8V|19V|
|Voltage DC (*1.41)|230V|13V|8.1V|27V|
I have disabled a undervoltage protection of TOP247Y, disconnected secondaries and tried to power it up... -
Symptoms:- From cold power-on, picture is perfect.
- After ~2–3 minutes, the image slowly degrades:
- contrast collapses
- colors wash out / look incorrect (greens especially bad)
- image looks “milky” / flat
- Turning the TV off for a few minutes fully resets it; behavior repeats almost exactly each time.
- Internal apps (YouTube, etc.) degrade the same way as HDMI input.
- On-screen display (menus) often looks mostly normal compared to the video underneath although its hard to tell.
I tried heating different areas with a hair dryer and I've isolated a specific area on one of the panel...01-09-2026, 02:20 PM -
I have the schematics for the motherboard (NM-D011) but not the daughter board (NS-D013) which is responsible for power button, fingerprint reader, wired network, etc.
I found this diode marked '5AE2D" partially shorted. On the board it is marked as U0302. Can someone, please tell me the actual diode name so that I order a replacement for it?
Thanks....
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