I had a weird issue where the CPU frequency of my Thinkpad X61 was stuck
My newest toy is a S.M.S.L AD18 Desktop D-AMP with 80 Watts output. I have ordered this device directly from Aliexpress. The build quality is solid, solely the rotary encoder knob is a little flimsy. The other thing that annoyed me with the engineering is that the device uses over 1 Watt when turned off. In this post I show how I have resolved these two issues to mod the device to my liking.
Rotary Switch Knob
The default knob is made from black plastic. Since I had a knob made from anodized aluminium laying around from a previous project I wanted to swap the knobs. Then I also noticed that the rotary encoder itself was a bit low on quality. It had a lot of play in the rotary shaft. For this reason I decided to replace also the rotary encoder ensemby alongside the knob. That job was pretty straight forward.
- Open the front panel. Be aware, there are skrews under the glued down display glass. I opened the glass after heating up with a pair-dryer with a sharp knife.
- Note down the connections of the rotary switch to the little front display board using a multimeter.
- Remove the old rotary switch and replace with new one. Solder connections from rotary switch to front panel board.
- Test and reassamble the front plate.