Author Topic: Smoking P10 panels  (Read 1623 times)

Offline Slim00209

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Smoking P10 panels
« on: May 20, 2017, 07:39:36 AM »
Good morning,

The title pretty much says it all.  I'm afraid I have fried 4 P10 panels.  I read the wiki more than twice on how to hook them up, my power supply was less that DC5V.  I checked and double checked my wiring.  The first time I plugged the power supply in and applied power, they started to smoke.  I noticed that a few of the IC chips started to glow where the smoke originated.  I immediately disconnected power. Any idea on what would cause this?  I'll replace them as they are not too expensive, however don't want to make it a habit. 

Thank you,
Ryan


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Offline David_AVD

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Re: Smoking P10 panels
« Reply #1 on: May 20, 2017, 03:47:43 PM »
Sounds like the voltage was wither too high or the polarity was wrong.

Pictures of the wiring setup would help.
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Offline CaptainMurdoch

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Re: Smoking P10 panels
« Reply #2 on: May 23, 2017, 12:08:04 PM »
Did you have the panels screwed to anything?  If you use screws that are too long to mount the panels, they could go all the way through and touch the circuit board shorting out something.  I think Pat fried a couple panels this way until he realized what was happening and switched to shorter screws.
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Offline Bshaver

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Re: Smoking P10 panels
« Reply #3 on: May 23, 2017, 08:00:45 PM »
What Captain said, or use he plastic screws as well. But still the shorter screws are better.. (again if that was possibly one of the causes)
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Offline patdelaney

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Re: Smoking P10 panels
« Reply #4 on: May 27, 2017, 09:46:44 AM »
What Captain said, or use he plastic screws as well. But still the shorter screws are better.. (again if that was possibly one of the causes)


Yeas I fried 3 boards because the screws were too long ... thanks everyone for remembering that :-)


The good thing is now we have panels that we can let people looks at, touch and feel at the shows.  :-)

Offline tractormike21

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Re: Smoking P10 panels
« Reply #5 on: October 24, 2017, 05:52:47 PM »
I also just fried possible 4 out of my 6 P10 panels.
I ordered the right ones from Ray Wu along with 2 5v-40amp supplies.
I used the correct wiring, assuming the red leads were positive and the blacks are negative:)
upon powerup I saw arcing and smoke from one of the chips.
I pulled the power and checked the power supplies.
Both of them were reading from 25-30volts:(

I am looking for a good supplier of power supplies and some more panels to replace my fried ones.
Also, I need 3 longer cables.

Any suggestons?

Tractormike

Offline patdelaney

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Re: Smoking P10 panels
« Reply #6 on: October 25, 2017, 12:03:32 PM »
Did you screw the panels to some sort of Frame, check the length of the screws. I fried 3 boards because the screws were too long and they Pinched the boards


Offline David_AVD

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Re: Smoking P10 panels
« Reply #7 on: October 25, 2017, 03:23:04 PM »
@tractormike21 , did you measure the output of the power supplies for connecting them to the panels?

Offline Ebuechner

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Re: Smoking P10 panels
« Reply #8 on: October 25, 2017, 04:12:16 PM »
Wow 25-30 volts. That'll definitely mess things up.
Look for somebody who supplies meanwell power supplies.
I'd also have a few words with whoever sold you those power supplies. Are they marked as a 5 volt power supply?

 

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