My fathers belt sander from the 80s which i very much would like to continue using has an issue with the speed control. The machine works fine on maximum speed but will not turn or give any sign of life when on any other setting. The speed control is a dial going from 1-6 although implemented as a potentiometer without distinct steps. I took the machine apart and measured each component individually, all components and measurements have been captioned in the attached pictures. The Triac did not get identified correctly using my cheapo component tester, i don't know if this is user error, if the...

Anyone run memory speed tests with an old X58-based triple channel 1st gen or any other >2 channel board? The one I have is a Gigabyte I think.

Anyway I had four 4GB DDR3-1333 modules in the 6 memory slots and got around 11GB/sec memory speeds assuming that it went dual channel since it didn't have enough modules for triple channel. Now I stuck in two more 4GB modules, but they are DDR3-1600. I'm still getting 11GB/sec speeds according to memtest86...

Just wondering, anyone do memory speed analysis on these triple (and higher) channel memory boards? Are there any...

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.​

I wanted to add to the knowledge base about a PWM case fan that it can fail at 100% speed.


On my Dell ultra 7070 (this is a 0.6 L pc so uses laptop parts); I had the case fan suddenly go 100% and I couldn't control it. I disconnected/reset bios and it was only solved when I swapped in a replacement fan.

I have tested and there is continuity between the 4 wires pins and the circuit board.

That is the extent of my troubleshooting. I took pictures of the circuit board but don't know what component would die (PWM controller?) that could cause this to happen....

Hi guys.i have alienware 13 r1 with weird thing what i cant understan

Basically laptop is freezing every time if nvidia gpu is enabled and laptop is on battery power,however it working just fine pn ac power

So i wanted to sort this out as thats quite annoying as i need to disable nvidia to use it on battery or use it only with power cord-i already tried change battery,update drivers,change power setting,update bios,install windows 10 and windows 11, but nothing helps it still will freeze on battery

What i noticed that cpu speed in bios is 1.70ghz but...