PSU got 1 green and 1 orange. I swap PSU and same thing.
The board itself is like new, no dust whatsoever.
After the inspection of the main board, no sign of anything that have burned.
Like I said before, the board itself doesn't light up. Neither the FAN that are on that board.
If you look at the data sheet for the psu page 10
http://www.datasheetlib.com/datasheet/784801/pfe1100-12-054ra_power-one.html?page=10#datasheetThe 2 LEDs are a single color green indicating AC on/off and a 2nd LED that is bi-color for the DC side. There are 2 colors "green" and "yellow" (which presumably is the orangy color people report since its just a bi-color LED and not something more). A solid yellow is the result of any of these conditions:
Over temperature shutdown
Output over voltage shutdown (V
1 or V
SB)
Output over current shutdown (V
1 or V
SB)
Fan error (>15%)
Since swapping the PSUs causes the same error that would generally rule out over temp or fan error (psu fan not chassis fans). This means that it is trying to output too much voltage or current (implying a short somewhere). This would have to be on the DC side as its the only LED that is bi-color. Which means its either on that power adapter that the psu connects to or its on the board itself. Given that the board has physical damage that indicates that is the only problem.
Power-one just got bought out, I have no idea if these PSUs are going to be harder to get support on in the future or not.
BTC ADDY - 1EBndeeb4zpXjNgx9iewaVy3edkLVNRhmqi have returned to offer some help to peeps or at the very least provide some more interesting info i found out.
1. like the post above states there are 3 colors used. red, green, and an amberish color. The red usually shows up on the far far end of the string of lights and the others are greed and or amber. I got a coupleof boards in the other day that i paid $53 each plus shipping and one had green lights with a red led at the far end and the other had all amber lights with a red one at the very end. Im assuming this was one from a batch that substitued the green lights for amber ones since it makes no difference what the color is and it doesnt seem to indicate any issues. Now some may notice lights are off in the row of diodes and that means thats a core that isnt being contacted or is shut off to protect the core from damaging voltages. i have no clue which belongs to which and dont care to be honest.
2. these dont need the waterblocks on them to test the power. sounds stupid i know but if you connect the power to them with nothing else connected the lights will come on but the dies on each core will stay ice cold. some may be wondering whats up but after i played around and pulled a dummy move of not connecting the pump cables up i realized the lights dont cycle when the 3 pin fan connector has nothing attached and or the fan runs slower then a certain rpm. If you look in the status page of a terra miner it says the fan speed of the fans and the fan speed of the pumps which the pumps dont have fans but they do communicate like they do so if a pump is no longer able to hit lets say 2000 rpm but the miner is set (cant change this normally unless modding cointerras firmware) to only kick in the core when the 3 pin fan connector detects 2000+rpm then the board shuts off that core and will not start it even if the second pump is running fine and circulating the liquid over both cores. soooooo with that being said this also means something else can be used to cool the cores instead of expensive water cooling kits and that something is air
. if you get a higher end heatsink sure it will be louder but you will no longer have to worry about leaks and or a pump dying. if a fan dies the core shuts off and you replace that fan with an equal or better cfm fan that is controlled using 3 wires and your all set. itried out a coolermaster heatsink with 3 moddel dell delta fans with 2 pwm controllers specifically made for 4 pin fans and it was able to cool the cores down when using diamond thermal paste. i got the temps to drop to about 70 degrees in a room that was pretty warm because i closed the door to work on everything in peace.
3. if your psu is going orange on you get a standard pc psu and remove the board from the miner. cut the wires or in my case make a new pci-e connector with just bare wires on the other end and hook them to the terminals. it would be best to get 3 wires of pos and 3 of ground hooked to ring terminals but if you dont have a home depot or whatever near you you can wing it but ring terminals are the best way to go and they will securely lock the wires down. anyway after having 3 of each hooked to the correct power posts and having the board sitting on a piece of cardhoard or in my case supported on some m3 spacer posts power on the psu. Once you do one of the mosfets will probably burn up. i have had at least one burn up on every board i connected to external power. its never the same one and i believe its because thats the weak mosfet causing the spu to sense a problem and shut off to pretect the board. I repeat one mosfet has burned up on every single board i have repaired. once the mosfet is replaced doing the same thing again doesnt cause it to burn up. this tells me the psu sensed a problem and shut off before the mosfet blew which in this case you want it to blow so it puts a mark on the top of it allowing you to find the damaged mosfet. with the psu turning off before it blows it allows it to stay in tact making it hard to find the damn thing. also once blown it wont allow the psu of the miner to communicate with that die so it wont sense a power problem and usually allows the miner to start up without however many mosfets that blew. it sounds bad but really its fine. just provide power and wait a couple of seconds and check the top and bottom for the blown fet. cant get anymore simple then that really. so a standard pc psu has 2 roles here….one the power pushed into the board lets you find the bad mosfet and 2 the psu provides the unmetered power to the board and wont shut down like the main miners psus would to prevent what your trying to have happen. idk about u but i rather have 1 dead die and 7 working dies to mine with then 8 dead dies and a board that shuts off to protect the fet that is gonna blow anyway. that and u can replace the fet allowing the board to potentially hash at full tilt again
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i will keep posting more info when i run into those issues. u can take it or leave it but i will still post it lol. Also i will offer my help replacing stuff on the boards if people want. I will only need the board nothing else and if i replace the mosfets its $100 flat for the first one and $10 per additional fet because it takes a long time to heat these boards up to temps that allow the solder under it to melt so the $100 covers the first fet and the $10 each covers each additional one. if i cant make any progress with the board then u only pay shipping to and from me. so $100 plus shipping to and from me or shipping to and from me. Or you can run it the way it is if you want lol idc just throwin that option out there. Or you can sell me ur miners or parts for them too like psus and psu boards and water cooling kits and so on.
finally since everyone i see on this forum posts donation addied i thought y the hell not?? if my info helped you in ne way and ur feeling greatful lmk by sending some btc my way
its wayyyy cheaper then cointerras help thats for sure!!!
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