This is a short weekend video on how I changed the cold white led on my bedside reading lamp to a warm white one which is better for my eyes.
Category: Soldering
Voltlog #43 – LCD Monitor Repair
In this video I am repairing an old 19 inch lcd monitor (Iiyama ProLite E481S) who isn’t powering up anymore. As usual with these lcd monitors, the fault is caused by capacitors on the power supply board.
Voltlog #42 – DIY 4 x 18650 Battery Charger
Today we’re going to be making a DIY lithium battery charger and more specifically aimed at charging 18650 cells. I sometimes take apart some of these laptop batteries to recover 18650 cells and I have a bunch so far that I kept. Every-time I salvage these cells I test them before deciding to keep them or not.
As you can imagine it takes time and I need to charge multiple cells at once. So I will be making a charger that can handle 4 x 18650 cells but the project is scalable and you can increase or decrease the number of cells it can handle according to your needs. As usual, links for all the items will be in the video description.
Voltlog #35 – SMD Assembly And Reflow
In this video I am going to show you how I assemble PCBs with surface mount devices. First I apply the solder paste with the help of a stainless steel laser cut stencil, next I manually pick and place all the components and the last step is to run the boards through a reflow profile in my DIY reflow oven.
Voltlog #34 – Fluke 77 Teardown & Repair, Varistor Replacement
In this video I’m opening the Fluke 77 I scored at a recent auction to show and repair a small issue it has. One of the MOV (metal oxide varistor) in the input protection circuit had suffered damage probably while protecting the rest of the circuit when a HV signal was applied to it’s input, so I decided to replace the MOV.
The original MOV part number is V910LSX1399 specs: 910V 10% 1mA
The replacement MOV part number is Panasonic ERZV10D911 specs 910V 1mA
Voltlog #29 – Through Hole Drag Soldering Technique
This one is a very short video showing you how to use the drag soldering technique. I am using this method every time I need to solder in line pins, I get good solder joints in half the time it would take me to solder each individual pin. This can add up to a lot of saved time when you’re working on boards with more than 400 solder joints.
Links for products used in this video:
- Set of 10pcs hakko clones soldering iron tips
- High Quality Clone HAKKO FX-951 Soldering Station – EU
Voltlog #27 – Transistor Tester Short Functionality Review
In this episode I am testing the various menus on the Graphical LCD Transistor/Component Tester purchased from banggood. This gadget does more than just measure and identify components, it can also measure frequency, it has built-in frequency generator as well as a 10-bit pwm generator with adjustable duty cycle.
Links to the products shown in this video:
- Gabotronics Portable Oscilloscopes
- Graphical LCD Transistor Tester – Original Documentation PDF
- Graphical LCD Transistor Tester + Plastic Enclosure Combo
- Just The Graphical LCD Transistor Tester
- Just The Transistor Tester Plastic Enclosure
Voltlog #26 – Graphical LCD Transistor/Component Tester Kit
In this episode I am assembling the Graphical LCD Transistor/Component Tester purchased from banggood. Once again I give some hints on through hole soldering and in the end the kit works as expected on first go.
Here are some links where you can purchase the kit shown in the video: