Block Erupter Prisma (>=1.4 T/device, 0.75-0.78 W/G, <1 BTC/T, October Shipping)

[tutorialevideo]

We will send to the agent some good boards, If you are in what they buy ,please contact to him.

Does this include the group buy from CrazyGuy? I have a prisma that caught on fire 11/10, was sent back and cleared Hong Kong customs 11/18.

we Already solve to you ,sorry

sorry bro

[rammy2k2]

from what im reading here this product is ... very low quality ...

[NotLambchop]

We will send to the agent some good boards, If you are in what they buy ,please contact to him.

Does this include the group buy from CrazyGuy? I have a prisma that caught on fire 11/10, was sent back and cleared Hong Kong customs 11/18.

Maybe try it with a different CGMiner build?

[OgNasty]

from what im reading here this product is ... very low quality ...

From my personal experience I would say that low quality is an understatement.  This is the lowest quality miner I've ever owned, and I've owned a CoinTerra and every BFL miner.  The prisma I bought never achieved speeds over 300GH/s.

[philipma1957]

Well I got good results with mine> but  a really finicky machine.

I could do 1400gh with 1200 watts  all day and all night long.

 but It :

 1)needed extra fan for cooling.
 2) would not underclock and hold the settings.   if I set it at lower freq it would start at 950 watts and 1100 gh and over night be 1050 watts and 1200gh

I did not feel I could travel away from it and leave it alone.  I do this with my s-3's and now with my sp20's

I go on short 2 day trips and the antminers and spondoolies hold onto the underclocks.

I turned mine back in for a small loss.

oh not to mention I had to close my garage door to warm the room to get it to start.  

then open the garage door to keep it cool enough to run.

A lot of work for me.  Plus the fear of burning.  I just could not do a proper setup with it.

Now on a side note these were lucky gear for me.  I really wanted sp20's but they were 1100 usd when this prisma came out.
 So I went cheap purchased the prisma and the sp20's dropped over 400 bucks in price. 
So I lost 50 bucks on this and saved 400 on the sp20  net 350usd gain.  I was lucky with the short tubes as well.

[Chris_Sabian]

Well I got good results with mine> but  a really finicky machine.

I could do 1400gh with 1200 watts  all day and all night long.

 but It :

 1)needed extra fan for cooling.
 2) would not underclock and hold the settings.   if I set it at lower freq it would start at 950 watts and 1100 gh and over night be 1050 watts and 1200gh

I did not feel I could travel away from it and leave it alone.  I do this with my s-3's and now with my sp20's

I go on short 2 day trips and the antminers and spondoolies hold onto the underclocks.

I turned mine back in for a small loss.

oh not to mention I had to close my garage door to warm the room to get it to start.  

then open the garage door to keep it cool enough to run.

A lot of work for me.  Plus the fear of burning.  I just could not do a proper setup with it.

Now on a side note these were lucky gear for me.  I really wanted sp20's but they were 1100 usd when this prisma came out.
 So I went cheap purchased the prisma and the sp20's dropped over 400 bucks in price. 
So I lost 50 bucks on this and saved 400 on the sp20  net 350usd gain.  I was lucky with the short tubes as well.

Did you return it to AM for a partial refund?  If so, who did you talk with at AM?

[Zich]

We will send to the agent some good boards, If you are in what they buy ,please contact to him.

Does this include the group buy from CrazyGuy? I have a prisma that caught on fire 11/10, was sent back and cleared Hong Kong customs 11/18.

I feel sorry dude, but it seem that something spill to the board. Look like coffee residue.

[DigitalPackrat]

We will send to the agent some good boards, If you are in what they buy ,please contact to him.

Does this include the group buy from CrazyGuy? I have a prisma that caught on fire 11/10, was sent back and cleared Hong Kong customs 11/18.

I feel sorry dude, but it seem that something spill to the board. Look like coffee residue.

Not sure if your joking or serious but that's the board that was facing down and caught on fire after running a few days at 220mhz in a cool well ventilated space.

[Zich]

We will send to the agent some good boards, If you are in what they buy ,please contact to him.

Does this include the group buy from CrazyGuy? I have a prisma that caught on fire 11/10, was sent back and cleared Hong Kong customs 11/18.

I feel sorry dude, but it seem that something spill to the board. Look like coffee residue.

Not sure if your joking or serious but that's the board that was facing down and caught on fire after running a few days at 220mhz in a cool well ventilated space.

My mistake, sorry. The temperature must be very high to cause such burn.

[DigitalPackrat]

We will send to the agent some good boards, If you are in what they buy ,please contact to him.

Does this include the group buy from CrazyGuy? I have a prisma that caught on fire 11/10, was sent back and cleared Hong Kong customs 11/18.

I feel sorry dude, but it seem that something spill to the board. Look like coffee residue.

Not sure if your joking or serious but that's the board that was facing down and caught on fire after running a few days at 220mhz in a cool well ventilated space.

My mistake, sorry. The temperature must be very high to cause such burn.

It was about 75f.

[Zich]

We will send to the agent some good boards, If you are in what they buy ,please contact to him.

Does this include the group buy from CrazyGuy? I have a prisma that caught on fire 11/10, was sent back and cleared Hong Kong customs 11/18.

I feel sorry dude, but it seem that something spill to the board. Look like coffee residue.

Not sure if your joking or serious but that's the board that was facing down and caught on fire after running a few days at 220mhz in a cool well ventilated space.

My mistake, sorry. The temperature must be very high to cause such burn.

It was about 75f.

Are you sure it's 75 F not 75 C ?
75 F / 24 C is cooler than our body temperature. Did burn come from leaked capacitor then?
Just realize that some of other BE200 been puffed-up. The temperature on BE200 top side must be very high.

[bigredbutton]

Well I got good results with mine> but  a really finicky machine.

I could do 1400gh with 1200 watts  all day and all night long.

 but It :

 1)needed extra fan for cooling.
 2) would not underclock and hold the settings.   if I set it at lower freq it would start at 950 watts and 1100 gh and over night be 1050 watts and 1200gh

I did not feel I could travel away from it and leave it alone.  I do this with my s-3's and now with my sp20's

I go on short 2 day trips and the antminers and spondoolies hold onto the underclocks.

I turned mine back in for a small loss.

oh not to mention I had to close my garage door to warm the room to get it to start.  

then open the garage door to keep it cool enough to run.

A lot of work for me.  Plus the fear of burning.  I just could not do a proper setup with it.

Now on a side note these were lucky gear for me.  I really wanted sp20's but they were 1100 usd when this prisma came out.
 So I went cheap purchased the prisma and the sp20's dropped over 400 bucks in price.  
So I lost 50 bucks on this and saved 400 on the sp20  net 350usd gain.  I was lucky with the short tubes as well.

Did you return it to AM for a partial refund?  If so, who did you talk with at AM?

Refund from AM? Are you joking? I'd be very suprised if anyone even manages to successfully communicate with those fuckers, let alone RMA.

If you are reading this researching and thinking about purchasing this miner. DON'T. For this price range get a few S3+(for home) or SP20(for data center). Stay away from this miner.

[DigitalPackrat]

We will send to the agent some good boards, If you are in what they buy ,please contact to him.

Does this include the group buy from CrazyGuy? I have a prisma that caught on fire 11/10, was sent back and cleared Hong Kong customs 11/18.

I feel sorry dude, but it seem that something spill to the board. Look like coffee residue.

Not sure if your joking or serious but that's the board that was facing down and caught on fire after running a few days at 220mhz in a cool well ventilated space.

My mistake, sorry. The temperature must be very high to cause such burn.

It was about 75f.

Are you sure it's 75 F not 75 C ?
75 F / 24 C is cooler than our body temperature. Did burn come from leaked capacitor then?
Just realize that some of other BE200 been puffed-up. The temperature on BE200 top side must be very high.

75f was the ambient temp, the components were much hotter than that. My suspicion is that there was a short on the back side against the heatsink.

[Furio]

I wanted to buy these to, very sorry to see all the problems for other buyers, it was a bit expected, since I investigated and this seems to happen a lot to Prisma's, along with the mining bugs, still no-one deserves this...

[sunxiaoxiao]

if you have any questions , please contact us (ASICMINER sales) : email : sale@bitquan.com /  help@bitquan.com

[rammy2k2]

I wanted to buy these to, very sorry to see all the problems for other buyers, it was a bit expected, since I investigated and this seems to happen a lot to Prisma's, along with the mining bugs, still no-one deserves this...

same here, im avoiding them

[Blazed]

if you have any questions , please contact us (ASICMINER sales) : email : sale@bitquan.com /  help@bitquan.com

HAHA yeah cause that will help...NOT


He got the refund from CrazyGuy not AM (CrazyGuy has been great during this fiasco trying to help us suckers out who bought this garbage miner).

Edit:
If they would have handled it like the other sellers (SP-Tech and Bitmain for example) offered some compensation and said "hey guys we know there is issues, and we will get new boards out ASAP" then it would not be such an issue. What we got is completely ignored by them...they obviously do not care.

[Chris_Sabian]

if you have any questions , please contact us (ASICMINER sales) : email : sale@bitquan.com /  help@bitquan.com

HAHA yeah cause that will help...NOT


He got the refund from CrazyGuy not AM (CrazyGuy has been great during this fiasco trying to help us suckers out who bought this garbage miner).

Edit:
If they would have handled it like the other sellers (SP-Tech and Bitmain for example) offered some compensation and said "hey guys we know there is issues, and we will get new boards out ASAP" then it would not be such an issue. What we got is completely ignored by them...they obviously do not care.

I'm in the same situation.  I paid, with shipping from Canary, ~1.6 BTC and the prisma won't hash at more than ~300 gh/s and it will shutdown after about 45 minutes.  I've pretty much figured that it is a complete loss.

The prisma is complete crap.  I will never buy another AM product again.

I agree 100% with the text in black.

[tutorialevideo]

if you have any questions , please contact us (ASICMINER sales) : email : sale@bitquan.com /  help@bitquan.com

HAHA yeah cause that will help...NOT


He got the refund from CrazyGuy not AM (CrazyGuy has been great during this fiasco trying to help us suckers out who bought this garbage miner).

Edit:
If they would have handled it like the other sellers (SP-Tech and Bitmain for example) offered some compensation and said "hey guys we know there is issues, and we will get new boards out ASAP" then it would not be such an issue. What we got is completely ignored by them...they obviously do not care.

I'm in the same situation.  I paid, with shipping from Canary, ~1.6 BTC and the prisma won't hash at more than ~300 gh/s and it will shutdown after about 45 minutes.  I've pretty much figured that it is a complete loss.

The prisma is complete crap.  I will never buy another AM product again.

I agree 100% with the text in black.

I-am verry happy whit prisma using the USB UART and getting around 1.35 TH/s on ghash works fine a little bit loud but no problem

[LordPaco]

So fighting with these machines for several weeks now I have found out a couple things:

1. These things are so temp sensitive that I don't see them running autonomously without being installed in a climate controlled environment. Not the heat - but the cold. If I fire them up from cold, or I turn on the vent to full, they will cool down to the point of not even hashing. They don't start to hash halfway stably until the room hits at least 70F+. I shut off the vent for too long and it overheats everything else. This makes me feel like I'm dancing on a wire rope.

2. IR Gun every hashing boards and look for boards that are running 2X+ times as hot as normal hashing boards. These need to be pulled as fire hazard, they may be affected by #3

3. The laminate on the bottom of the pcb/hashing board is VERY thin. One scratch here will reveal the copper substrate inside the pcb and will invariably lead to a short to the heatsink and fire is likely.

I run cointerras, S1, S2, S3, S4, BFL, BTCGarden, ZeusMiners in every flavor, Gridseed G-Blacks, SP20's... This was my very first RMA, flame out and hardware exploding miner, power supplies excluded.