No Power

[Tigman009]

I am really new to this so be nice.  I just finished my first Dongle and Lynx Express.  The dongle works just fine but for some reason when I applied power to the express  on the LH power input I get nothing.  No lights at all.  I took my volt meter and tested the two wires going into the PCB and found 120 v on the terminal ends.  I also swapped the power leads just in case I had them backwards but still nothing.  I checked the fuse with the OHM meter and it is good too.  Where do i start?  Thanks in advance
Mike

[Tigman009]

just a note...I tried power on the RH side too.  Still nothing

[rrowan]

Hi Tigman009

First thing I would suggest is to take pictures of both sides of the board and post it.

If you apply power to the LH power it should power up the board and the power indicator LEDs. 3.3v and 5v

I would guess its either some solder problems and or parts in wrong.

Rick R.

[Greg]

You might want to check the orientation of the bridge rectifier (top left corner of the board).


Greg

[RJ]

Made any headway?

How can I help?

RJ

[Tigman009]

I can't seem to upload any pictures.

[Tigman009]

Here is another try

[Tigman009]

#2

[Tigman009]

#3

[Tigman009]

#4

[Tigman009]

update.  If I touch the big red heat sink I get shocked

[rrowan]

you (16) Optocouplers are upside down

No way of telling if the green LEDs are in the correct way and are you use the voltage regulars are in their correct spot and facing the right way? The regulars and triacs look the same but are different.

Maybe in the morning my eyes can work slight better

Rick R.

[rrowan]

update.  If I touch the big red heat sink I get shocked

That is NOT good.

I just checked my LE and I don't get shocked by it.

If you can the 2 green power leds, flip them around and see if they light up.

Look across the triacs connected to the heat sink and see if they are ALL exactly the same

Rick R.

[Tigman009]

I turned the 16 optocouplers around and now I get shocked when I touch the big red heat sink.  That didn't happen before I reversed them.  I do believe I installed the LED's correctly as the longer wire was inserted in the + side.  Thanks for the help though

[Greg]

Okay, stupid question time (normal for me though) 

Looks like in one of the photos you have the board sitting on an antistatic bag.  You're not powering the board up sitting on the bag are you?

Greg