This non-conductive substrate sandwiches copper circuitry that actually makes up the circuits the boards are named after. Printed circuit boards are typically made from laminated composite material. Here’s our printed circuit board component tutorial, with lots of information and pictures to help you identify those individual parts. And many of the best aren’t even available online anymore unless you know how to use some special tools (Wayback Machine to the rescue!)īut rather than complain about this state of affairs, we decided to create our own tutorial to fix it. Luckily, there are resources that can help. After working with thousands of PCBs, we understand. If you’ve ever tried to work on your own PCBs, or printed circuit boards, you may have experienced the frustration of looking at a part and not knowing exactly what it is. The GPU core never warms up more than 43.5 degrees Celsius, the RAM never warms up more than 52.6 degrees Celsius and the hottest component of the card never warms up more than 53.4 degrees Celsius.It can be hard to identify all the components on printed circuit boards (PCBs). Of course the story will be different if i put some load on the GPU. My PC usage doesn't get the GPU to warm up to that temperature, so the fan is not actually needed. At the moment the graphic card is fully assembled and it's used in my PC, according to the GPU bios the fan is not even supposed to start up until the hottest component on the card reaches 65 degrees Celsius. My memory could be wrong though, please take this with a grain of salt. Pin 6 is connected to refin pin on up9512p. I haven't taken notes of the voltages on the Q32 pins but if my memory is correct pin 1 is connected to GND, there was 2.7v on pins 2, 3 and 4 and there was some voltage i can't remember on pin 5. Pin 6 connects to the reference voltage input pin 1 of up9512p through a 100 ohm resistor (there is another 2.7k resistor from up9512p pin 1 to GND). I'm attaching a photo taken with my phone (i hope it's clear enough) of the defective component in the memory VRM circuit. I found another identical component in the fan controller circuit and swapped them around, this fixed the memory VRM but of course now the fan doesn't work.

The problem ended up being a SOT component marked Q32 on the PCB, which is generating the reference voltage for the memory VRM controller up9512p (it was outputting exactly 0.3v, which the up9512p faithfully replicated at the memory VRM output).

Hello, I (almost) repaired an Nvidia RTX2080 card where the memory VRM was outputting only 0.3v instead of the expected 1.35v.

Smd components identification pdf