Capacitor on Lenovo motherboards Used for stability and performance in modern systems
Capacitor on Lenovo motherboards Used for stability and performance in modern systems
I possess a Lenovo IdeaPad gaming 3 15.6" laptop. Yesterday I upgraded my RAM to 16GB, everything proceeded smoothly until I accidentally shifted this small protective component and it got damaged. A friend checked the motherboard and capacitor and confirmed no harm was done, though I’m still unsure about its purpose or how to confirm the board remains safe over time. Would really appreciate any advice or comments. Thanks for your help. Pd: I didn’t disconnect the battery or discharge all power beforehand, and I know I should have. But now I’m a bit concerned about this “not-burned but looks burned” PL202 part. Here are the photos for reference: https://files.fm/u/f33jcpt36
It's a type of inductor. I made extra effort to locate one you can buy or obtain a model reference from that link. https://www.digikey.com/en/products/deta...roup=Fixed Inductors&utm_source=google&utm_medium=cpc&utm_campaign=Shopping_Product_Inductors%2C Coils%2C Chokes_NEW&utm_term=&utm_content=Fixed Inductors&gclid=CjwKCAjw_L6LBhBbEiwA4c46utVvfi9f9CXT0yHa9he4X4VyY7HOTFKA3ToC5GB-qlwUIxT875hNihoCOEUQAvD_BwE Good Luck!
Hello, I encountered a similar issue with my Lenovo Idepad Gaming 3. The problem started when I tried to replace the RAM cover while the battery cable was still connected. Here’s what happened:
1. What part burned? (PL202)
2. Does this damage affect other components? If yes, what else could be impacted?
3. Is there still warranty coverage from Lenovo? I’m only two months old and still within the warranty period.
4. How can I fix it?
5. Should I avoid using the RAM cover in the future to prevent mistakes next time?
The same thing occurred for me... what actions did you take afterward? Are there any issues or concerns?
I have a Lenovo IdeaPad Gaming 3 15ACH6. While upgrading my RAM, the cover got stuck and touched an inductor, causing a small flash and a pop. The inductor seems damaged. I plan to reach out to Lenovo soon to check if this is covered under warranty since I bought the laptop just a month ago. In the meantime, the laptop is still working, but I’m hesitant to leave it unchanged because unexpected issues could arise later. If anyone knows more about what this inductor does, please share.
Seems like a section of the input filter is linked to the battery positive via PF201, with the metal part probably tied to ground. Touching it across the inductor creates a direct connection between the terminals. With two parallel components, removing the inductor might still function, though the filter value could shift slightly. It’s worth verifying the PF201 fuse, as it could be blown.
Hello guys, I have had this problem for two days now, upon research I found that PL201, PL202 and PL203 are ferrite beads and not inductors, you might have seen the schematics somewhere on the internet for the motherboard and the symbol is the same of an inductor, it even has the L designation, but the things that made me think it is a ferrite bead and not in inductor are as following: 1) It says EMI@ which stands for electromagnetic interference which is what ferrite beads are used for, to suppress high frequency noise and let low frequency ( or in this case DC current) pass. 2) the designation 5A-Z80-0805 stands for: 5 Amps max current (if you see there is a 15 amps fuse before the three ferrite beads) Z80 stands for the impedance Z @ 100Mhz => Z = 80 Ohms for high frequency noise and lastly 0805 is the package, Length x Width = 0.08x0.05, if you see on the internet you can hardly find this package for an inductor and if you do it doesn't look like that part. Furthermore, they don't specify the inductance like the do for the capacitance and resistance for other components it says only 2P ( two pins) and not 2pH ( which is not possible for a 5A inductor to be 2pH the lowest inductance is 2.2uH) 3) And finally this low pass filter is commonly used for this kind of applications to filter out the noise of a DC input . NOTE !!!!!: I might be wrong and it can be an inductor the symbol strongly suggests that it is indeed an inductor but i cannot wrap my head around the fact that they didn't specify the inductance, I did not test this theory but it is the most logical one in my opinion and that is why the laptop is still working, has it been an inductor we have a higher chance of a complete failure. If i test this theory I will come back and tell you guys. that being said please next time remove the battery when you open your laptop ( note to myself too )