The pictures of course are not good but i hope to be some kind informative. On the first one i show where it is from. On the third i show another elements like this unknown for me.

The notebook was hit. This element was not soldered normally. It`s labeled BV and has one small white area and one black.
If this is capacitor can i know it`s value only by this "BV"?

thanks

Here they are :
https://ibb.co/muwRBk
https://ibb.co/i2sNj5
https://ibb.co/jNCoP5


Mods Note:
Please upload the images to the forum as 800x600 or 1024x768 *.jpg files.

 

Hi,
It look for me a surface mount diodes. And BV is a component code .
It is a either a signal diode or a shunt diode to gnd.
Look to near similar diodes to compare.

 

There is a 30V zener diode - BZT52H-C30 - that looks like that and it is marked BV.
Check the datasheet dimensions to make sure it is the same package.

 

Sadly, it would need to be the same manufacturer and production batch for 'BV' to be meaningful. The package dimension is a standard that can contain whatever. Better probe its characteristics. If blown/damaged, probe another 'BV' on the same board to discern what it may be.

 

So...
I found only one such element on the board. I don't think it's the diode from the PDF. Mine element has legs which Definitely are not so long in width dimension.

If desolder the other one what kind of tests to do with it?

P.s if think right this element is the reason to not see picture on the external display / mine work monitor/

 

Considering where it looks like it is in the circuit, I think it is a tantalum capacitor. If you have a capacitance meter, you may be able to get an idea of its value.

 

The pictures of course are not good but i hope to be some kind informative. On the first one i show where it is from. On the third i show another elements like this unknown for me.

The notebook was hit. This element was not soldered normally. It`s labeled BV and has one small white area and one black.
If this is capacitor can i know it`s value only by this "BV"?

thanks

View attachment 133817
View attachment 133818
View attachment 133819
View attachment 133820


Here they are :
https://ibb.co/muwRBk
https://ibb.co/i2sNj5
https://ibb.co/jNCoP5


Mods Note:
Please upload the images to the forum as 800x600 or 1024x768 *.jpg files.

Could be an SMD ferrite bead - hard to tell, too blurry to see PCB legend.

Looks too long for a diode or capacitor.

 

Looking at the pcb markings labelled as PD15 i say it's a Diode.

 

Dodgydave says it is a PD15. I couldn't discern what it said on the board, but that'll be the best indication. Diodes are typically labeled as a D and a number of some sort, indicating on a bill of materials what it is. If it says PD15, well the D part of it might suggest a diode. PD COULD be a Power Diode - but I'm only guessing.

To take a clearer photograph, hold the camera further away and then zoom in and you should get a clear picture of the board, the other device and the device you've already removed.

Typically an SMT capacitor will have metalized ends with metal on each end and on four sides of each end, whereas resistors have metal on each end and metal on top and on bottom of the component. Diodes typically have a foot of some sort, but not always. And with manufactured electronics, there can be a vast amount of variance on how someone builds a component. But like I said, cap's have metalized ends and all four sides (top, bottom and both sides of the end).

 

But like I said, cap's have metalized ends and all four sides (top, bottom and both sides of the end).

Even that one isn't always true. Got a variety of SMT caps in the 10-47uF range recently and half of them only had exposed metal pads for soldering on the bottom of each end. I remember all too clearly because it was one of my first attempts at hand soldering smt components and those ones were much more challenging for me.

 

You seem to have PRXXX for resistors, PCXXX for capacitors and therefore PDXXX for diodes?

 

We have a winner :
https://ibb.co/kbp4gk
https://ibb.co/kG16u5
https://ibb.co/idqMSQ

* i dont upload here because Adobe Flash does crash when click Upload

 

It is a diode.

 

But what kind of diode? Probably not schottky given that forward voltage. Probably not a fast rectifier given that rather large capacitance (is that a reliable measurement?).

 

the board is daax3mb16A1 Rev:a

 

Hello,

@UnnamedUser159 , Please upload pictures to the forum.
If the flash uploader is giving problems remove the tick at the "Use the Flash-based uploader to upload attachments" line here:
https://forum.allaboutcircuits.com/account/preferences

Bertus

 

Hi,
you can be sure if it is a diode by testing using diode test mode in any digital meter.
If forward will show value 0.5v to 0.7v and reversing the probe will shown a OL .
If both reading show is look alike you are 100% its a diode.

 

683mV to "1" which should be infinity

 

Dodgydave says it is a PD15. I couldn't discern what it said on the board, but that'll be the best indication. Diodes are typically labeled as a D and a number of some sort, indicating on a bill of materials what it is. If it says PD15, well the D part of it might suggest a diode. PD COULD be a Power Diode - but I'm only guessing.

To take a clearer photograph, hold the camera further away and then zoom in and you should get a clear picture of the board, the other device and the device you've already removed.

.

Most digital cameras have a switch position for close up shots.

mine has a symbol of a plant pot, some makes call it "macro".

 

Someone to give hint about the diode ?