Probably the greatest use of profanity was in the Spongebob Squarepants episode "Sailor Mouth".

"Hiya Squiward, how the F**k are you?"

It is, when you consider it, an amazing word.

C

Ok, that's problem 1: Miner is not connecting (which is weird since it is going blue). Just to be sure, you have the miner connected to the AUC thingie which is then connected to the Rpi, correct? Do a screenshot of the various screens in OpenWRT advanced and a picture of how your miner is connected (4 pin cable goes in the left plug socket, correct?)

C

Tok, if that happened I would expect people to be selling blood plasma for cash to buy that dip.....

Hm. Have you tried loading the stock Avalon 6 code on a mmc card and tried that? There is an option there in the advanced tab to look at the miner configuration statistics, maybe something is odd with it (although that would cause a red light normally).

Still, start with the stock factory code and go from there.

PS: I'm not seeing any shares being submitted on the cgminer page.

Agreed. Ignoring keeps me from reading it, but I still have to read about it.

Meantime, $8000 wall breached again. Time for 9k.

You know if this keeps up I might write or commission an extension to this forum code that will ignore not only a person's postings, but anyone who quotes, cites, or even mentions that persons postings in a 5 day window.

That could make the forum much more readable.

Meantime how is Bitcoin doing today..... Not too bad, down a little bit but not too much. Now how do we get to 9k by end of month?

Meantime I took one chip off the bad board to try and get the good board to pass loop tests. Still not coming up, it's possible the problem is in the MCU; if you have a spare you would like to send over I can do a cross-check.

I'll post a few pictures from the second board; there are at least 5 chips on there that have solder balls or shorts on them, what is making me wonder is how a unit could operate long enough with a single short in order to burn up additional chips. I wonder if the unit only self tests the loops on startup, and not while running. If so there may be a flag or option I can set in cgminer to ignore bad chips and continue, then I could figure out which chips are good/bad.

Researching..... In the meantime didn't see them on Amazon, but Amazon may have a return policy for the second unit.

Right. That is what I am calling the second unit you sent over. I'm not fiddling with that at all in case you want to return it. The board work is being done on the first unit.

C

Likewise you should see the other side of the first unit. At least 4 chips have either bridges or solder extrusions, my guess is these were run way too hot and eventually blew up. When blew up they were sold. This side shorted +12 over to the signal lines blowing the MCU.

Fix.... Hm. Have other things to do so will put this aside (I have not touched unit 2, but I'm expecting similar things). But anyway that's one way to blow a board.

C

If you bought it from Ebay, then do a return request. I'm going to take off the second board, anyone know of a source for these chips?

C

And in the meantime I've solved the mystery of your other unit's side 0. As mentioned it comes up with a Loop failure, which probably matches your description of "it would work sometimes then drop out". Taking the board apart and looking at it with the 15x loupes reveals the problem:



Anyway the issue is that one of the chips has a solder bridge along several of the connection points. Avalons do the same thing as the Antminers in that the power for the chip comes in on the top and bottom sides with signals coming in on the sides. In this case the chip overheated and melted the solder enough to make a nice little 3 wide bridge.

I'm guessing that is the problem. Now to see if I can fix it. Hm.....

C

Meantime I figured out what kills Avalon boards. Overheating is causing solder bridges. I so rule.....

And BCH fails to pump to the sky.....

If you're referring to the cowboy era, you do realize that most towns had ordinances which required turning in guns to the sheriff.


Hm. :-)

Reserved for some more before and after pictures.

Hm. This would never qualify as "working". Maybe they made a mistake and sold you a broken one. I would recommend sending them this picture, then saying it is broken and you would like a working one as agreed.



In the picture you can see where the pads were literally ripped off. Did you get the cable at least?

Does it work? If so drop it in the mail and I will confirm the board statuses.

C

M5: Don't buy a BMW, buy a good Porsche. I'd recommend the 928S4 for the best bang for the buck these days, fast as hell.

Stugot: I'll post thoughts here. Micro-summary:

Mess.

Summary:

Fucking mess :-)

Seriously, the miner has one of its' header pins literally ripped off the hashing board. As in traces were pulled up, if this was sold as anything close to working it never was. That would happen if someone was upset beyond normal parameters and yanked it.

The MCU appears to be in better shape than the one on your first unit, but it will not bring up either that board or the board on your first miner, loop errors. So either both boards have failed loops (quite possible) or the second MCU is screwed up in some way as well (not unbelievable)

In the meantime, your first MCU board has a blown U7 chip, that's the LPC11U1 chip. It's a 8-16 bit microcontroller with 32k of Flash RAM, my guess is this is the housekeeping module that deals with the power and such. It's way bad (gets hot=bad) my guess is the short in the power measuring circuits on board M1 faulted to ground through this chip.

No wonder it flunks diagnostics.

Anyway, if this latest unit was sold as anything other than scrap get your money back, it's toast. I won't do anything else with it until this is figured out. Meantime I'll look into replacing this chip on your first MCU to see if that brings it back to life.

C

Ah that's it: We can use the Tesla truck to tow our car-carrier full of Lambos!

As for selling, bit at a time for bitcoin-cost averaging....

Yeah, saw the little roadster thing this morning. Don't discount the truck, I could see picking up a truck that would blow the doors off most Porsches :-)

Meantime looks like it's time to dump more BCH. Dump de dump de dump....