While working on CAD for a update to the Tronxy P802M 3D printer I lost the ability to navigate FreeCAD using the middle mouse button. This was disruptive to my productivity and I have spent a considerable amount of time tracking down the problem. My first thought with anything computer related is software so I […]
Read More Razer Mouse Middle Click FailureAfter the transformer in my Keithley 177 grenaded I set about designing a replacement power supply.
Read More Keithley 177 Power Supply ReplacementAfter picking up and repairing two Keithley multimeters I found it necessary to have a way to calibrate them. I have a DMMCheck Plus voltage standard but that is set to a fixed 5VDC, not very useful when the calibration procedure calls for 1.900VDC. Luckily I was able to pick up a used Analogic AN3100 […]
Read More Analogic AN3100 DC Voltage StandardI picked up two used Keithley benchtop digital multimeters from eBay that are in need of repairs. They were sold as working but as is often the case with eBay sellers who are unfamiliar with measurement equipment, they both have some issues that I intend to fix in this short article.
Read More Benchtop DMM Keithley 177 and Keithley 179 RepairI repair a dumpster find Fisher MC-3000 Integrated Music System
Read More Fisher MC-3000 Receiver RepairI discovered while cleaning up an old Pentium 4 Gateway PC that one of the electrolytic capacitors on the motherboard had gone bad. I could tell it had gone bad since the aluminum can was puffed up and the top vent was opened,the capacitor had heated up and vented a majority of its electrolytic. The computer was still functional with the bad capacitor but I decided to fix it anyways just in case.
Read More Repair – Remove that Cap
SD Perry 