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what's this component??!!

Javidzed

Apr 12, 2017
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hi guys
Ive broken one component on my sony neo l mainboard and I just don't know what was it and what acually it do (cause its next to physical buttons and they do still work fine)
at last if you kniw an equvalant plz help me

upload_2017-4-13_7-6-19.png

upload_2017-4-13_7-7-22.png


[MOD NOTE: Added photos to post]
 
Last edited by a moderator:

Alec_t

Jul 7, 2015
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Welcome to EP!
Several components are shown. Which one, and why do you think it is broken?
 

Javidzed

Apr 12, 2017
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Welcome to EP!
Several components are shown. Which one, and why do you think it is broken?
hi man thank youuu
I forgot to highlight it .I mean it completly fell off and lost with screw driver , its on left side of left button
it was acually ;-) you can just see board contacts now
its similar to those two black components in other image which is named f1
 

Externet

Aug 24, 2009
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Seems the missing component is above the S/N bar code in first picture.
What is printed on the smaller black component (resistor) in the second picture ?
 

Javidzed

Apr 12, 2017
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Seems the missing component is above the S/N bar code in first picture.
What is printed on the smaller black component (resistor) in the second picture ?

I don't see any letters on resistor :-!
that's odd if key still works without it?!
 

Javidzed

Apr 12, 2017
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According to this site, the f1 (sod-123 package) is probably a zener diode.

http://www.s-manuals.com/smd/f1

thanks for investigation I really apprecate ,I think you are right
but the question is why buttons are still working?!
most of the circuits diodes act as the only way current flows to block current in reverse dirrction
I m really confused , there is a f1 (diode) for every button in board(power home back etc)
 

HellasTechn

Apr 14, 2013
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I see the diodes for the middle and right button...
Culd you post the picture with the missing part in a red box ?
 

HellasTechn

Apr 14, 2013
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Though the missing part may be the same as the one the arrow points, the parts arrangement is not the same at theese two points.

I can not tell for sure.

Hope iv'e helped :)
 
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