The metal shield is rounding all the charger. It's conected to earth, but has any more function? My guess it is a shield to avoid interferences. What do you think? I'm going to change a cable without earth, what about if I remove this shield? It does not have any heat dissipation function.
And what about the white adhesive that is everywhere? It's like sikaflex or another polymer adhesive, but is aplied with very little care. I don't think heat dissipation is happy with this.
Googling I found a guy reparing a HP laptop charger and I was very impressed because it looks a clone of Lenovo or vice versa
- Posts: 1633
- Joined: Mon May 28, 2012 5:49 am
- Location: Metro Manila, Philippines
2. If I'd have to guess, it's a damper for the inductors.
Backup: X220 4291-P79 i5-2520M
In pieces: X60s CS U1300 [board only], two retired but working X61Ts
RIP: 760XD 9546-U9E, X61 T7500
- Senior Member
- Posts: 544
- Joined: Sun Jan 24, 2010 5:32 pm
- Location: USA : Illinois : Chicago
That white stuff (like caulk, and harder than silicone) might be placed to prevent a fault/leak/short across condensed moisture. Might, maybe; I am only guessing; I likely am wrong. I noticed it in several power supplies which include that encasing metal shield. I observe, it is usually applied onto circuit components which are tall or near to that metal case. I assume its purpose is electrical isolation/insulation, where air humidity condensate could form.
I opened a new subject talking about this
- Similar Topics
- Last post
- 10 Replies
- 578 Views
Last post by jdk
Fri Feb 09, 2018 11:48 am
- 6 Replies
- 2199 Views
Last post by rkawakami
Fri Jan 19, 2018 4:05 pm
- 4 Replies
- 208 Views
Last post by PRAGUEGUY
Sat Feb 10, 2018 6:31 am
reflashed a driver on my x220 to fix pointe/non-oem charger issue. trackpad and pointer are dead, can't get them back!
Last post by NonesensE « Wed Jan 17, 2018 1:41 amReplies: 4
Posted in ThinkPad X200/201/220 and X300/301 Series
- 4 Replies
- 2248 Views
Last post by NonesensE
Wed Jan 17, 2018 1:41 am
Who is online
Users browsing this forum: No registered users and 2 guests