pcb

Hi, my motherboard on my laptop would not start after i change new ram, when i open it i could see a blown psb ceramic capasitor. You can see this in the photo. I removed it from the motherboard compleetly and made sure the line went to the other pcb. and changed to old ram, the laptop worked...

Hi all, I am currently reviewing this Degson DG2002-4.0 connector. https://www.degson.com/content/details_123_10715.html May I know what does the arrow above the connector mean? And what do the holes beside the arrow does? Based on the photo below, there is this operating tool which can be...

Looking for some Help finding cap values and any other related chips on water damaged board. I'm looking to buy a new saa6581t and 4.332 crystal but not sure where to start on the rest. Is this board even salvageable or could the internals and tracks also be fried? Any help is appreciated...

I was looking at a schematic and came across this symbol. I couldn't understand what it was or what it's being used for. I tried googling what I could. I found that G is generally used for generators and power supplies. I looked up symbols and didn't find anything close enough. Maybe this is old?

I figured the best way to learn how to design PCB's and specifically a Flight Controller was just to try and make one. Since im fairly new to this, I'd like to know if I got something wrong here or in general if that PCB would work. I will add a few more things but these are the main components...

TLDR: ID & ideals on mangled through-hole components, images below: Story: The Torontonian's Tale of the Fridge Fiasco Out with the old, in with the new! Or, so the non-electronics hobbyist will say when an appliance malfunctions. But, me? No, siree bob! Not with a soldering iron and all the...

Hi there, Main Question I'm hoping to get some feedback on this PCB design and the overall design, because this my first real electronics project. Also, I have several questions about feedback I received on ESE. Background I'm aiming to make an instrument for my brother, and since I've been...

So I had my first soldering experience on my second computer mouse, idea was just to put in new microswitches. I began to do with my old thick soldering iron and now it looks like I applied too much heat and my solder pads GONE. I bought myself a new better soldering iron, but havent seen any...

Hello, I have this issue with the case of the Nokia Earbuds BH-605 where the battery is not charging anymore. I noticed that a diode has fallen off but I can't find it anymore. Below are some pictures. I'm an absolute novice regarding to electronics, is there a way to determine which diode I...

Hi all I hope you are well and keeping some degree of sanity during the pandemic! I run a little business repairing and servicing treadmills which covers all aspects of getting hem back on track The majority of the repairs centre around the PCB's which seem to be relatively simple but break...

Hello, I designed a PCB with 3pcs TC7660 charge pump ICs. They are going to be connected paralely to reduce output resistance. Each of them can be disconnected at the output side via jumper. I have a problem to make them working even when they are separated from another components. It seems like...

This was removed from a Elm327 Wifi obd2 reader it had invalid WIfi settings so it was unable to make a wifi connection I tried shorting GND to RST while only applying 3.3v to the 3.3vpin - no luck any tips would be appreciated . that mess on the RS232 header came like that from the seller

It's weird that primarily 50% of the time the purple test point is the only color to have this issue, why purple? Part> https://www.mouser.com/datasheet/2/215/Keystone_Electronics_04082019_5190TR-5199TR-1551357.pdf

I am wondering how to cut some shapes in the middle of the PCB. I am not sure on which layer I need to do and also no idea about how the manufacturers consider that? Please let me know on which layer I need to cut and also how to add it to CAM processor in order to see it has been cut. Is there...

Hello, I'm in the process of designing a PCB for a simple dual polarity unregulated power supply and I have a question regarding zones and traces. The PSU is designed to supply 4A and 40V on each of the two rails. There are two 10mF capacitors implemented to avoid ripple. So through each of the...

Hello all! New homeowner here, and our house has what I am told to be a pretty nice Gas Fireplace. Which would be great except that the up key on the remote control doesn’t really work. I don’t really want to fork out the $100+ for a new remote (new homeowner and father!!) and I am pretty...

Hello fam, I ordered a SPST switch (Through hole type) from distributors and also download the cad file for PCB layout from the same website. I am now confused with the pin configuration, in the footprints it has 3 holes. Usually the SPST switch has only 2 pins right?. I have gone through the...

Hi there, I have samsung eco bubble washing machine. I was using multimeter probes to test voltage and the probe slipped and it seems something was shorted. Now the machine won't power on. PCB dc41-00189a I'm a Newbie Please help me to troubleshoot this pcb.

My buddy and I have been working on a project for the last 2 years, its a PCB board with 79 LEDs and built-in microcontroller taillights. We can controll every aspect of them... but we've hit a snag when it comes to power. The Volvo C30 uses PWM to send signals to the taillights. This needs to...

Hey there , my 1 year old tv recently stopped working , I’m not familiar with these stuff but I’m trying to figure out which is defective in order to replace it. The tv has no standby light showing and does not turn on, the power supply board keeps making a ticking sound, I have checked the...