It constantly alters the chip frequency to maintain the best hashrate / lowest hw error %

To use enter --avalon-auto into the more options field in cgminer configuration tab.

The more I play with these things the clearer it is to me that they are junk. I've got two Avalons that I have to manually restart cgminer on about every 4 hours otherwise their hash rates drop to under 100 mhs. As soon as I restart cgminer they go back to their advertised speeds. Also while they are running slow the web interface is SUPER choppy.

Is there a way to force cgminer to restart itself every 6 hours or so?

Oh, all hardwired not wi-fi.

I guess I'm not totally surprised that they are shit.

I've been getting this also, mainly on my wifi units. when connection is around 40% it tends to disconnect from wifi for some reason. If you cannot boost the signal, i suggest you restart the unit every 5-6 hours using the scheduled tasks (look in my old posts to find info how). Ofcourse, putting it on a cable connection is MUCH more reliable.
cgminer i keep restarting every 3 hours to keep hashrate on top.
Also, if its not in a very cool area, i would remove the 375mhz freq, put it on a more solid 340mhz and change it to --avalon-auto, this will keep the unit more cooler, and can help your tp-link wifi/network-card to not overheat due to exhaust air flowing over it..

It looks like you have some charring on the board in the picture, to the top left of the electrolytic cap that's reflecting the flash. Does that module mine at all?

I didnt take any photo's (although I should have). The screws I'm talking about are on the small rectangular plates that secure the ASIC boards to the heat sink. With those screws as lose as they were the ASIC's would not have been able to transfer heat properly to the heat sinks and most likely would fail prematurely. 

Why is my miner losing connection? I have only had it a couple of days and haven't tampered with the hardware. Sometimes when I come home after college my miner has stopped mining and the orange light is on, so it is losing connection, yet my internet has been on the whole time. Can anybody help? Thanks.
~AvalonMiner
p.s. My miner is an AvalonMini 60Gh.

Now that these things have been up for about 12 hours I've got some more data.

On the first one I unboxed, I opened it up and found all those screws that needed to be snugged on the heat spreaders. Now, its the coolest one of the bunch and also has the highest hash rate. TEMP2 (which I'm guessing is on one of the boards or the heatsink) is 46C on this until and the others are all over 50C. Also, the fan speed on this one is around 2500 whereas the others are all at 3200 and higher. Hash rate on the miner I popped open is just south of 60GH's and the others are all hanging at closer to 57GH's. All four units are clocked to 375.

Seems to me that I need to bust open the other miners on Monday and tighten some screws. 

I've got a friend that is working on a exotic cooling solution for gaming rigs. He's going to look at one of my Avalons to see if he can come up with something for them. I'd love to see these things operate closer to 40C without added fan noise. FWIW, the room they are in is held at a constant 18C.

Stay tuned!

Does anyone know if orders placed today will be delivered by month end?

Cheers

Wow HelMax, You sure are "Green" on mining!   If you are eager to waste money, BFL is sure the place to go, they have a proven track record of delivering a year to 8 months late. Good Luck.

PS  Is there a cointerra being delivered I missed?  I thought they were late as well....? 

Whats with all these people buying November Jupiters, I hope you are not buying with btc.

one board is 10x375Mhz. 3.75GH, is it worth it?

The exhaust fan grill, i would like to know its dimension! could you measure it for me? i will connect a aluminium hose to direct hot air outside, mine are overheating..

one board is 10x375Mhz. 3.75GH, is it worth it?

The exhaust fan grill, i would like to know its dimension! could you measure it for me? i will connect a aluminium hose to direct hot air outside, mine are overheating..

Just unscrew the top heatsink covering the two modules.
Unplug your broken module. it will start running again with 10 less chips unless something else burned.

Could you measure the exhaust pipe for me please?

You should really do the following if you plan to go over 375Mhz on these minis.

1. confirm they were shipped with 850W Gold PSU's
2. stick them in a cold place, like a cold room or your attic if you live in a city that gets snow this time of the year.

My mini's temps are: 16/47/39

I had the same thing happen with two of my batch 3 units. Unfortunately there is nothing you can do to fix this unless you can isolate specifically what part on the PCB died and replace it. This would require some skills that not everyone posses. If it's a blown capacitor it might be a lot easier to fix.

I am hoping that the Avalon team would introduce Avalon modules with their new 55nm chips so I can just swap the old cards with new ones, but who knows if and when this will happen.

 

System
Scheduled Tasks
Add these two:
0  */3 *   *   *     /etc/init.d/cgminer restart
0  20  *   *   *     /sbin/reboot

first one, will restart cgminer every three hours.
second will restart entire miner every 20 hours..
This way i have realised to keep some of my miners online better (those on wifi tend to lock and go m.i.a after a while).

The only numbers that are important to you are the ones on the pool, disregard all numbers you see in the miner stats.
I think your hardware increase when heat goes up to much, and thats when you are reaching low results..
stick to 375 on --avalon-auto i think is best. (skip quiet).
I get 60gh on mines.. but i restart cgminer automatically every 4 hours. It keeps hw errors low. (0821).