Solved

Where to get Nokia E72 parts - inductor and fuse

Posted on 2014-01-11
8
439 Views
Last Modified: 2014-01-14
hi experts

i am looking for two electronic components for my Nokia E72 (yes, a legacy Symbian phone!)  as they were lost in an accident. as the result, the phone can't be charged over the charging socket at the bottom.

please see below the photo and schematic for where and what they are.

Component locations on the E72 motherboard
Component locations in the E72 schematic
can i buy or get them from somewhere?

Inductor - 220R / 100MHz
Fuse - 2.0A (5119045) --- this one?

any suggestions on how to fix it?

thanks heaps
bbao
0
Comment
Question by:Bing CISM / CISSP
  • 4
  • 4
8 Comments
 
LVL 27

Expert Comment

by:d-glitch
ID: 39774792
You can try Mouser and Digikey.
You also need to know the physical size of the components in mm (0804 or 0402).

You could also just bypass both of them with a single piece of wire with minimal risk.
The inductor is a noise filter, but you still have one in the circuit.
The fuse protects the phone if your 1A charger goes crazy, but I've never seen that happen.

If you are really worried, you could put the fuse in the charger wire.
0
 
LVL 27

Expert Comment

by:d-glitch
ID: 39774811
0
 
LVL 37

Author Comment

by:Bing CISM / CISSP
ID: 39776289
thanks for the links, they are really a great collection for electronic components.

i checked the online catalogue, the choices are a lot but i just cannot determine which one could be fully compatible with E72 phone (or any other specific Nokia phone) as Nokia. the brand, is not a vendor listed there.

just matching the spec and size seems not able to give me the confidence...
0
 
LVL 27

Accepted Solution

by:
d-glitch earned 500 total points
ID: 39776613
>>  just matching the spec and size seems not able to give me the confidence...

It is hard to inspire confidence over the internet, but let me say again that these two components really are not critical.  I believe you could bypass them entirely with no problems.

I interpret the spec of the inductor (220R/100MHz) as 220 ohms reactance at 100 MHz.
That implies an inductance of    L = 220/(2*pi*100E6)  = 350 nH
0
How your wiki can always stay up-to-date

Quip doubles as a “living” wiki and a project management tool that evolves with your organization. As you finish projects in Quip, the work remains, easily accessible to all team members, new and old.
- Increase transparency
- Onboard new hires faster
- Access from mobile/offline

 
LVL 37

Author Comment

by:Bing CISM / CISSP
ID: 39776632
nH, Nano Henry? so small...
0
 
LVL 37

Author Closing Comment

by:Bing CISM / CISSP
ID: 39776635
sometimes a number does matter. :-) thanks for your help and time.
0
 
LVL 27

Expert Comment

by:d-glitch
ID: 39776789
Yes,  350 nanohenries is a small value.

But the purpose of this part is to block very high frequencies (like FM radio band around 100 MHz) from getting into the phone while you are charging.  The length of the charging cord is typically 1 meter, which is fine antenna length for FM radio.
0
 
LVL 37

Author Comment

by:Bing CISM / CISSP
ID: 39778585
thanks for the explanation d-glitch.

it seems for me i better not to bypass the components now as i am hoping to get organ donor like this. :-)
0

Featured Post

Enabling OSINT in Activity Based Intelligence

Activity based intelligence (ABI) requires access to all available sources of data. Recorded Future allows analysts to observe structured data on the open, deep, and dark web.

Join & Write a Comment

Suggested Solutions

As the title indicates, I have done this before. It chills me everytime I update the OS on my phone, (http://www.experts-exchange.com/articles/18084/Upgrading-to-Android-5-0-Lollipop.html) because one time I did this and I essentially had a bricked …
By this time the large percentage of day-to-day transactions have shifted to mobile banking; here are some overriding areas QAs must investigate while testing mobile banking apps.  
Illustrator's Shape Builder tool will let you combine shapes visually and interactively. This video shows the Mac version, but the tool works the same way in Windows. To follow along with this video, you can draw your own shapes or download the file…
Polish reports in Access so they look terrific. Take yourself to another level. Equations, Back Color, Alternate Back Color. Write easy VBA Code. Tighten space to use less pages. Launch report from a menu, considering criteria only when it is filled…

757 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

19 Experts available now in Live!

Get 1:1 Help Now