Author Topic: Few parts without markings...  (Read 1840 times)

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Offline OpenCircuitTopic starter

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Few parts without markings...
« on: March 23, 2017, 12:32:39 am »
Anyone know what these things are? Making a schematic and need to annotate what they are.





 

Online Andy Watson

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Re: Few parts without markings...
« Reply #1 on: March 23, 2017, 01:05:40 am »
Can't get to the bigger images.
The first device could be any three terminal device - likely a transistor or diode(s). When faced with similar anonymous packages I usually draw a circle and work-out what it is when I have more of the schematic to look at. Additionally, if it has any markings and I have a hint at what it might be, it can sometimes be identified via a site such as this:

 http://www.marsport.org.uk/smd/mainframe.htm

The second component looks like a capacitor - you will have to measure it to find its value.

The third component is probably a diode - possibly a zener.

It would help immensely if you could post as much of  the schematic as you can.

 

Offline OpenCircuitTopic starter

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Re: Few parts without markings...
« Reply #2 on: March 23, 2017, 01:15:52 am »

It would help immensely if you could post as much of  the schematic as you can.

Thanks for the reply Andy. Here is what I have so far-click image then click the image again to really zoom in: https://postimg.cc/image/mhf7ap4gp/

Here is my thread:https://www.eevblog.com/forum/repair/atx-power-supply-dead/
 

Offline xrunner

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Re: Few parts without markings...
« Reply #3 on: March 23, 2017, 01:17:17 am »
The first device could be any three terminal device - likely a transistor or diode(s).

The second component looks like a capacitor - you will have to measure it to find its value.

The third component is probably a diode - possibly a zener.

Yep I agree.
I told my friends I could teach them to be funny, but they all just laughed at me.
 


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