Board burned out

[garyriet]

Good morning
I was working with my board and it blew out. Was running 9v thru it

[pyr0ball]

@garyriet could you provide a little more detail about what happened and how?

[garyriet]

I was testing the board connected to a buck converter set to 9v dc which was connected to my external power supply 13.8v dc. All voltage measured using a fluke 87 multimeter. Connected board to power and to 4 27mm piezo discs.
Turned power on and was testing for about 5min when I smelled burning, shut power off and found the smell was originating from the board. Discounted board and measured power it was still at 9v. Reconnected board and it would not power on
Gary

[pyr0ball]

Can I see a picture of the wiring harness (with pins annotated if possible), as well as a high-res photo of the top of the EzPz board?

[garyriet]

[garyriet]

[garyriet]

[garyriet]

[pyr0ball]

Thanks for sending a bunch of angles, that really helps!

can I see where this is being plugged in on the controller side?

[pyr0ball]

just checking in to see if you still needed help with this?

[pyr0ball]

@garyriet I've deleted your previous comment as it contained personal information. Please keep in mind that this is a public forum, and it's generally inadvisable to post contact information in a way that's visible to anyone (bot spammers included)

Can you read the above messages and get back to me about how the board was connected?

[garyriet]