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Author Topic: LEDTriks fault  (Read 610 times)

Offline justinj

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LEDTriks fault
« on: December 12, 2011, 08:24:03 PM »
HELP!!!

Lithgow kindly sent me some LED drivers as I had only been given 6 of the 12 I needed but I'm having problems with these other ones.  Any help is REALLY appreciated as I'll otherwise only have 2/4 panels working :(
LEDTriks.wmv

Edit: The replacement ICs are STP16CP05
« Last Edit: December 12, 2011, 09:39:02 PM by justinj »
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Offline lithgowlights

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Re: LEDTriks fault
« Reply #1 on: December 12, 2011, 09:40:29 PM »
Sorry the chips did not work - they work ok here in the boards, but I know we often had to drop the voltage on the ledtriks board as compared to the triks C to get them to work successfully. My boards still have a diode in line, but having said that they also dont work with that com port you sent me - I have the same ones and they wont drive my board, BUT the test mode works fine.
 
I am at a loss as to what the issue could be as I cant test mine as the board is not really designed to come apart easily, nor be taken off the house without a bit of work.
 
As for the diode, any 1 amp diode will work - Jaycar cat number CAT. NO. ZR1004 (1N4004) is what I used
 
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Dave
2012 - Fireworks, pixicles and more pixels!
32 channels? More like 32 Universes ...

Offline justinj

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Re: LEDTriks fault
« Reply #2 on: December 12, 2011, 09:44:12 PM »
Well if I get no other solutions tomorrow I'll be buying those diodes in the hope they'll work as I've spent a LOT of time making the other 2 panels that aren't working (Those who own a LEDTriks are the only ones that could truely feel my pain in that aspect).
Don't know if it'll help diagnose a fault but when I have 2 MBIs running in test mode they work fine.  If I have 1 MBI and 1 STP they panel running the MBIs get flicker through them (But not like the STP boards) but that might just be because of current spikes and sags from the other one suddenly changing power usage when it goes dim?
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Offline lithgowlights

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Re: LEDTriks fault
« Reply #3 on: December 12, 2011, 09:47:07 PM »
You took the easy way out - people who soldered 768 LED's to their own copper grid truely know the pain - I did it 4 times lol.
 
Seriously though your issue has me stumped as to what the cause can be unless I simply sent you all dead chips
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Dave
2012 - Fireworks, pixicles and more pixels!
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Offline TimW

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Re: LEDTriks fault
« Reply #4 on: December 12, 2011, 09:48:51 PM »
Here's another idea from the diyc archives....!!!
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Offline lithgowlights

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Re: LEDTriks fault
« Reply #5 on: December 12, 2011, 09:53:44 PM »
Oddly enough instead of a 1 or .1uf cap in the ledtriks boards I have a 47uf - I think that was a tip from way back and may be the issue you noted Tim - I'd forgotten about that one, thanks
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Dave
2012 - Fireworks, pixicles and more pixels!
32 channels? More like 32 Universes ...

Offline justinj

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Re: LEDTriks fault
« Reply #6 on: December 13, 2011, 05:10:48 PM »
I put some 1uf caps as recommended by TimW and now it's working great


Thanks for all the help!      
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Offline TimW

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Re: LEDTriks fault
« Reply #7 on: December 13, 2011, 06:54:58 PM »
Excellent!  ;D    (Dont forget pics!!)
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