I bought some 5v 8A power supplies from china.  They came and are putting

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I bought some 5v 8A power supplies from china. They came and are putting out 5.59v. I hooked it up to some WS2812 pixels and a teensy and they looked like they worked a bit then started acting weird. I would have to disassemble the project to fix any leds. Cant risk it. Anyone know the top limit for WS2812B? Data sheet says 5.5v. Would the extra .9v cause issues? Any ideas on how to easily drop the voltage? I could put a resistor on there right? Thinking I may be out of luck here…

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What supplys was they ? Do you have a link

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All the switchmode supplies I’ve gotten out of china have a voltage adjustment pot ???

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@dave_windsor
http://www.ebay.com/itm/261320257099?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

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@David_Brenchley
See link above - its all enclosed.

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AH a wall wart … I’m somewhat skeptical the voltage level is your issue … but the easiest solution would be to put a diode in series w/ the 5v line …

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it would give you a consistent .6v drop regardless of the number of LEDs turned on …

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I’ve got a batch of very similar ones from Aliexpress and they work fine with both WS2812Bs and APA102Cs. Not sure if that helps…

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What about this tiny device:
http://www.alibaba.com/product-detail/L7805-LM7805-three-terminal-voltage-regulator_1357830747.html?spm=a2700.7724838.0.0.LOPF83

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@David_Brenchley I like your idea, but the diode has to selected carefully. With 8A there are usually Schottky Diodes out there, but they have a voltage drop of 0.4V at 8A.
Drawing 100mA the drop is
at 0.2V
http://www.produktinfo.conrad.com/datenblaetter/1300000-1399999/001305003-da-01-en-SCHOTTKY_DIODE_SBM845LSS_DO_201AD_PAN.pdf

Silicon Diodes (you need 2) like this have 0.6V at 100mA but 1V at 8A
http://www.produktinfo.conrad.com/datenblaetter/150000-174999/162442-da-01-en-Diode_P600.pdf

@Justin_Eastman I would suggest you test both (Schottky and Silicon) Diodes.
@Jose_Manuel The device is neat but can deliver only a max. of 1.2A

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I understand that you’re looking for a fix for the units you already purchased, but for the future… Mean Well LPV-60-5 is what I use almost exclusively. They are regulated to true 5v and IP67 rated ( dust-proof, submersible in water up to 1 meter). Costs about the same too.

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@Todd_Moyer Thanks those look good. A lot of projects don’t have enough interior space to hold the PSU. These look like a great option for those that do. Do you have a good supplier you use?