• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

circuit board

  1. T

    Beginner needing help

    I am a beginner in the whole circuit board world and need some help. Well alot really. I am trying to make some to help me in work as Ac tech. I have a drawing of what I am trying to make but not sure the best way. I have checked Amazon for different parts I need but think it will be more...
  2. R

    Battery powered COB LED illumination drop off

    PROBLEM: 24 SMD COB LED has too much illumination drop off over 3 hours. Currently powered by four 3V button batteries. PREFERRED SOLUTION: Get this battery powered LED to perform more consistently over a few hours. THE STORY: I’m working on a little project at home for a custom...
  3. jamesbulini

    HI,i wanna know what is the impedance board?

    What are the difference between impedance board & Non-impedance board？ :confused::confused::confused::confused:
  4. sr13579

    How to connect this audio amplifier bluetooth receiver with switches?

    Hello guys! I found this board with 25W + 25W audio output and I found that this thing has a switch controller for music and volume. But I couldn't find how to solder them. Is there anyone who used this board? Could you please help me with a diagram?
  5. A

    Repairing Automotive Check Control Box

    Hi guys, I’m working on repairing some electrical issues on my old car. The gauges are a bit wonky, some don’t work and on the special occasion that they do they bounce up and down. I am currently going through the wiring of the car, but one issue I (may) have found is the check control box...
  6. O

    Need help with alterations

    This is a circuit board for an LED head light flashlight. It has a hi, low, and stobe feature. I would like to disable the strobe feature. I am an amature, please help.
  7. M

    PCB information and resources

    Hi everyone, I am new to the site and I am looking for more information about PCB prototype designs & variations. Any info would be great! Thanks!
  8. Key Ing

    [Stupid Question] Hard drive port detached with motherboard connectors, need help fixing it.

    Hello, First of all, I'm totally inexperienced, and just someone trying to salvage a device if it's doable. I was trying to disconnect the HDD cable out of its port, but the whole thing came off with the connectors still soldered to it. I got some advice telling me it's an easy fix but I'm...
  9. K

    Need Help Repairing Old PCB

    I collect old vhs, and recently got some cool gimmick ones that light up when you press a button. However, they are almost 30 years old and no longer work. Taking a look at the pcb both were heavily corroded. I scraped off as much green corrosion as I could and replaced batteries but no luck...
  10. D

    Help repairing several Reconyx trail cameras

    Hello my fellow members, I have several Reconyx trail cameras that are broken and I am hoping someone can help me with. They cost around $600,- per camera and I am not able to send them out for warranty. These cameras are used to capture photos of wildlife (jaguars, tapir, etc.) and are...
  11. S

    Kenwood aftermarket amplifier problem

    Hello everyone, I am new on the forum. I have a older kenwood kac-7251 2 channel amplifier. It still works great except one problem, it is causing a parasitic drain on my battery. Started about a month ago, I am a auto and diesel technician so I checked parasitic draw, pulled my amp fuse and...
  12. A

    48 Volt Phantom Power Supply with Photo-Schematic. Transformer Question.

    Hey guys, This is my first post and I am happy to have found this website. I am currently working on a project using a PCB and jumper wires to make a 48v Phantom Power supply to be used with multiple condenser microphones. To make a long story short, I found a "mostly" detailed post on another...
  13. C

    How do I repair my monitor?

    My ViewSonic VX2250wm-LED stopped working. It blinks white (and then black) when plugged in, regardless of which type of which input plug I use. I know the monitor is the problem because my other monitor, which is the same make & model, works perfectly fine with the same inputs (knock on wood)...

Latest threads

EE World Online Articles

Loading
Top