repair - Motherboard power-up issue - Electrical Engineering Stack Exchange I am trying to diagnose a motherboard which does not power up No fans spinning, no PSU mains It an old one (ASUS p5k) with the P35 - ICH9 intel chipsets Trying to diagnose the issue i found out about the power-up sequence To my understanding the power-on pins on the board are high and when button is pressed they get low
motherboard - Ground terminals on the laptop PCB; laptop PCB . . . And in nearly every repair there is a multimeter used to test different components of the motherboard to see if their resistances voltages are normal I see that he puts one of the multimeter probes to one of the through-holes of the board (which are used to connect different layers of PCB, AFAIK), and the other probe is connected to the
motherboard - Is it safe to use a soldering gun when attempting solder . . . However, my primary question that I'd like answered is whether a soldering gun is safe using it in the manner that I have illustrated above BTW, the PCB is a laptop motherboard in which the CR 2032 battery housing has become detached from the contacts, and I must reattach it after drawing a new metal lead with a PCB pen
pcb - Best methods to fix broken tracks - Electrical Engineering Stack . . . I use wire-wrap wire to fix broken tracks, or to modify boards It's very thin, and easy to solder because of the silver coating It breaks easily so some sort of glue to hold the wires in place is advisable, I just use masking tape, sometimes
How to check for short Circuit in LDO voltage regulator Questions on the repair of consumer electronics, appliances, or other devices must involve specific troubleshooting steps and demonstrate a good understanding of the underlying design of the device being repaired See also: Is asking on how to fix a faulty circuit on topic?
Chip ID on a HP Envy 17 M45792-601 motherboard I'm trying to repair this above mentioned motherboard and I have identified that there is a problem with the voltage supply regulators but there are a few voltage regulator chips that I cannot track down Would anyone be able to point me in the right direction for the chip in the image I believe it to be a 3V3 regulator chip (PU4501)
repair - What is this black tape on my laptops keyboard? - Electrical . . . I had to pull off a layer of black tape on the old one to get it out The tape was glued to the bottom of the keyboard, right above the motherboard It ripped a little bit as I pulled it off and I can see that it looks metallic on the adhesive side What is this? An electrical insulator? Heat conductor? Do I need to replace it, and if so with what?