Like I often say, "buy it cheap, buy it twice!"
Topic: Lepa G1600W PSU for Antminer S7 - Can't power it on ! Bounty 0.05 BTC (Read 2292 times)
October 09, 2017, 11:16:56 AM
Well after about a year and a half the Lepa died on me... The last year it was only running an R4 so nowhere near it's max output, and even less than the S7 it was originally powering. I find it kinda surprising it would crap out since I wasn't redlining it and it was kept cool indoors since the lack of noise allowed it!
Like I often say, "buy it cheap, buy it twice!"
Like I often say, "buy it cheap, buy it twice!"
February 05, 2016, 09:23:50 PM
Been running a week at ~75% max hash rate (for electrical $$ reasons really, not the PSU) and so far all is well. Got less than 0.0001% HW and seems fine.
Guess I'll keep it.
YMMV
Guess I'll keep it.
YMMV
February 05, 2016, 03:21:20 PM
Tested for few minutes 
and is ok. The air coming from psu at the lower part was a bit hot...
Low error rate! only 1 in ~5minutes of test
http://imgur.com/a/25CsS
and is ok. The air coming from psu at the lower part was a bit hot...Low error rate! only 1 in ~5minutes of test
http://imgur.com/a/25CsS
January 30, 2016, 05:10:26 PM
Ok, got it up running and so far it is stable. I am running UC at 543 instead of stock 700 so there's a drop in power need there for sure. Looking at how the lepa has 6 output sockets assigned to 4 30A rails is a bit strange and if I wasn't running UC I'd wonder if this unit could handle it based on how the rails are, obviously, doubled up on some of the outputs...
Probably going to return this rube Goldberg designed psu and go with a better unit. But so far it's running ok, no smoke or any bad smells (yet)!!
Probably going to return this rube Goldberg designed psu and go with a better unit. But so far it's running ok, no smoke or any bad smells (yet)!!
The unit is fine, it can run an S7 full speed. The fact its multi rail is annoying but you should have no problem if you do something like 3 individual rails on double and then split a 4th in the 3 blades.
Running it at half load is not necessary.
January 30, 2016, 01:54:28 AM
Ok, got it up running and so far it is stable. I am running UC at 543 instead of stock 700 so there's a drop in power need there for sure. Looking at how the lepa has 6 output sockets assigned to 4 30A rails is a bit strange and if I wasn't running UC I'd wonder if this unit could handle it based on how the rails are, obviously, doubled up on some of the outputs...
Probably going to return this rube Goldberg designed psu and go with a better unit. But so far it's running ok, no smoke or any bad smells (yet)!!
Probably going to return this rube Goldberg designed psu and go with a better unit. But so far it's running ok, no smoke or any bad smells (yet)!!
January 28, 2016, 08:13:49 PM
Oh great, I just bought this PSU for my S7 that I will be powering up tomorrow night and NOW I read this thread... 
Well, I'll give it my best shot and report back on whether or not I can get it running properly. I will say that I'll be UC the S7 slightly to keep electrical $$ within reasonable limits.
At least it was an "open box" special from Frys, and I've never returned things to Frys, eh?
Well, I'll give it my best shot and report back on whether or not I can get it running properly. I will say that I'll be UC the S7 slightly to keep electrical $$ within reasonable limits.
At least it was an "open box" special from Frys, and I've never returned things to Frys, eh?
It would work just fine if you properly connect the right connectors to the right rails. Its a hassle having to balance the rails, but it will work just fine if you do.
Cheers, keep calm and mine on!
January 28, 2016, 08:07:32 PM
Oh great, I just bought this PSU for my S7 that I will be powering up tomorrow night and NOW I read this thread...
Well, I'll give it my best shot and report back on whether or not I can get it running properly. I will say that I'll be UC the S7 slightly to keep electrical $$ within reasonable limits.
At least it was an "open box" special from Frys, and I've never returned things to Frys, eh?
Well, I'll give it my best shot and report back on whether or not I can get it running properly. I will say that I'll be UC the S7 slightly to keep electrical $$ within reasonable limits.
At least it was an "open box" special from Frys, and I've never returned things to Frys, eh?
It would work just fine if you properly connect the right connectors to the right rails. Its a hassle having to balance the rails, but it will work just fine if you do.
January 28, 2016, 08:02:21 PM
Oh great, I just bought this PSU for my S7 that I will be powering up tomorrow night and NOW I read this thread...
Well, I'll give it my best shot and report back on whether or not I can get it running properly. I will say that I'll be UC the S7 slightly to keep electrical $$ within reasonable limits.
At least it was an "open box" special from Frys, and I've never returned things to Frys, eh?
Well, I'll give it my best shot and report back on whether or not I can get it running properly. I will say that I'll be UC the S7 slightly to keep electrical $$ within reasonable limits.
At least it was an "open box" special from Frys, and I've never returned things to Frys, eh?
January 27, 2016, 06:19:59 PM
I set the S7 to 675 MHz and it's running stable ... for now
Hopefully the shitty lepa can handle an S7 b8 at 675 Mhz...
Hopefully the shitty lepa can handle an S7 b8 at 675 Mhz...
January 27, 2016, 06:16:32 PM
true, lepa is a shitty PSU 
January 27, 2016, 05:16:14 PM
I've burn 2 LEPA 1600PSu's in my S7, the first one worked for about 5 minutes, the second not even 1, replaced it with an EVGA 1300.
Its a shitty PSU, Tupsu warned me, he have burn some too, but I had already purchased it...
IMO you should get a server PSU or an EVGA G2.
Its a shitty PSU, Tupsu warned me, he have burn some too, but I had already purchased it...
IMO you should get a server PSU or an EVGA G2.
No argument there. Multi-rail PSU is a dead giveaway. Its not too bad according to Johnny guru but even the EVGA g2 1300w would of most likely been a much better pick.
January 27, 2016, 04:58:51 PM
I've burn 2 LEPA 1600PSu's in my S7, the first one worked for about 5 minutes, the second not even 1, replaced it with an EVGA 1300.
Its a shitty PSU, Tupsu warned me, he have burn some too, but I had already purchased it...
IMO you should get a server PSU or an EVGA G2.
Its a shitty PSU, Tupsu warned me, he have burn some too, but I had already purchased it...
IMO you should get a server PSU or an EVGA G2.
January 27, 2016, 04:25:32 PM
my bad! sorry
i like to spread it better and not risk it.
why would i burn an 200$ psu!?!?
maybe the fact that it's not working on those 4rails it's saying that 30a is not really 30a....
i like to spread it better and not risk it.
why would i burn an 200$ psu!?!?
maybe the fact that it's not working on those 4rails it's saying that 30a is not really 30a....
January 27, 2016, 04:16:29 PM
because 4 rails of 30A give only 1200watt and batch 8 eats over 1300watt
...huh nope.
30A*12 = 360w per rail, time 4 equal 1440w for the 4 rails. And the DC draw is under 1300watts for the 3 blades at stock settings. At the wall you will get 1430W~ At 40% fan speed or so.
January 27, 2016, 04:06:54 PM
because 4 rails of 30A give only 1200watt and batch 8 eats over 1300watt
January 27, 2016, 04:04:42 PM
Told him already 
You need 8pin cpu to 6pin vga to pull 12v from the 2 20A rails, v1 and v2
I can test it on batch 8, already working on batch 7
You need 8pin cpu to 6pin vga to pull 12v from the 2 20A rails, v1 and v2
I can test it on batch 8, already working on batch 7
Why? He can just spread the load on the 30a's. Could slap the controller on a 20a but not obligatory.
January 27, 2016, 03:55:34 PM
Told him already
You need 8pin cpu to 6pin vga to pull 12v from the 2 20A rails, v1 and v2
I can test it on batch 8, already working on batch 7
You need 8pin cpu to 6pin vga to pull 12v from the 2 20A rails, v1 and v2
I can test it on batch 8, already working on batch 7
January 27, 2016, 03:50:21 PM
I tried powering only 2 blades and it seems to be working ...
seems the G1600w Can't handle 1400W...
seems the G1600w Can't handle 1400W...
It should be handling up to 1775w at the wall or something. Its a shitty multirail PSU.
So you're going to have to spread to load among the multi rail properly to run it. Then it should run fine.
January 27, 2016, 03:26:48 PM
batch 8? 'cause i can try it too
January 27, 2016, 03:14:20 PM
I tried powering only 2 blades and it seems to be working ...
seems the G1600w Can't handle 1400W...
seems the G1600w Can't handle 1400W...
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