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Author Topic: Avalon 1066 pro hardware issue  (Read 104 times)
Bluffking
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September 15, 2020, 08:39:14 PM
 #1

Hello everyone,
I need help with my Avalon 1066 pro55th miner.
I bought it recently and when I started it one of data cable ( control board to hashboard cable) burnt due to heat. So I changed it but again it got same problem. So I opened the miner and one of power connector clip fell off. It's loose fitted and may be due to this data cable is heating.
How I reattach it?? What material or chemical uses for its soldering.
Thanks in advance

https://ibb.co/48Xs3nw
https://ibb.co/c6kqCP8

This is the clip fell off from board, as you can see

https://ibb.co/4Sh5MCy
https://ibb.co/PDKKC3D

These are other two board are in perfectly fine condition.
https://ibb.co/yf94yYH
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HagssFIN
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September 15, 2020, 09:09:33 PM
Last edit: September 16, 2020, 12:16:12 AM by frodocooper
 #2

@Bluffking, If it is not under warranty: You can try to contact user lightfoot here at the forum. He has the right equipment to do such pcb connection repairs, for reasonable cost.

If it is under warranty: Please contact Canaan.

Bluffking
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September 16, 2020, 04:00:55 AM
 #3

@HagssFIN
Thanks for advice. it's under warranty but I can't send it back to factory as I am from India and shipping charges are high.
I want to do it in here, as you see it's not big work but just know what material/paste used to do it.
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September 16, 2020, 09:50:25 AM
 #4

Ok, then I think it would be optimal if you find an Indian guy who does soldering repairs

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September 16, 2020, 01:44:44 PM
Last edit: September 17, 2020, 02:35:10 AM by frodocooper
 #5

If you just want to reattach the connector clip you will need a hotair/blower working station it must look like this below.



You may also need to add more lead to the terminal. Use a soldering lead that mostly uses on old TV it looks like this below to make it stronger.



Then use soldering iron I think 30w or 45w  is fine then you may also need flux or I think rosin(Cheaper) is fine. After adding lead you can start reattached the clip.

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September 16, 2020, 03:22:33 PM
 #6

@BitMaxz
Thanks for your help it helps alot.
I'll do and tell the results.
philipma1957
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September 16, 2020, 03:50:13 PM
 #7

make sure you have a small spacer between the

 the -  and the rest of the pcb  so you dont solder a short.

I see BTC as the super highway and alt coins as taxis and trucks needed to move transactions.
mikeywith
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September 16, 2020, 09:13:24 PM
Last edit: September 17, 2020, 02:37:24 AM by frodocooper
 #8

... burnt due to heat.

... It's loose fitted and may be due to this data cable is heating.

These are completely different theories, if the first one is correct then you need to manage the heat first or else you will face the same issue again, I am not familiar with Avalon miners, but almost everyone in this forum says they are robust, which means they should have some sort of heat-protection and not allow the miner to get hot enough to melt the miner's components.
 
So my guess is that the second theory is more likely and this is just a manufacturing defect due to inadequate quality control, which sadly you have to fix since you can't send the miner back (a problem which I face as well due to the shipping cost and other complications).

If you just want to reattach the connector clip you will need a hotair/blower working station it must look like this below.

https://i.imgur.com/h4yoSkQ.png

I believe he only needs the soldering iron, the heatgun has no use in this fix and it probably costs a lot more than the soldering iron.

Anyway, I would advise against him trying to fix it if he has no previous experience in soldering, it may seem like an easy job but it isn't.

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September 16, 2020, 09:32:14 PM
 #9

Thats why my recommendation was to take it to a professional soldering guy.

It should not cost too much

NotFuzzyWarm
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September 17, 2020, 05:16:40 PM
Last edit: September 17, 2020, 06:07:48 PM by NotFuzzyWarm
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 #10

A couple points about this:
1) The OP mentioned a data cable getting burnt. If the terminal that came off was the negative one, a burnt cable tells me that w/o the high-current connection to the PSU the chips were probably trying to complete the circuit by trying to connect through the returns in the data cable. Not good! There is a chance that other parts may have been damaged by that (hopefully not).

2) The bus terminals are very substantial chunks of metal connecting to an equally substantial pad on the PCB. That means you will need a rather hefty soldering iron - at least 50W and even higher would be better. In fact, one of those old transformer-type soldering guns - usually >100w - would be very handy...

The pics show what looks to be bolt holes in both the PCB and terminal. Wonder why Canaan did not reinforce the connection by using a bolt as well as just solder?

- For bitcoin to succeed the community must police itself -    My info useful? Donations welcome! 1Fuzzyk398kDWVjuC5qPX5v6CjSkvbgAbd
How a miner mfgr SHOULD operate:  HaggsFIN trip to Canaan
-Support Sidehacks miner development. Donations to:   1BURGERAXHH6Yi6LRybRJK7ybEm5m5HwTr
philipma1957
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September 17, 2020, 07:17:12 PM
Last edit: September 17, 2020, 11:58:03 PM by frodocooper
 #11

The pics show what looks to be bolt holes in both the PCB and terminal. Wonder why Canaan did not reinforce the connection by using a bolt as well as just solder?

good point.

on that note if he bolted them back on it could work.

And if bolting it on worked he could then do soldering work.

seems to me 2 bolts and 2 nuts = cheap as compared to an entire solder station purchase.

Ie if bolting it on does not work don't bother to solder it back.

I see BTC as the super highway and alt coins as taxis and trucks needed to move transactions.
NotFuzzyWarm
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September 18, 2020, 12:42:54 AM
Last edit: September 18, 2020, 02:59:48 AM by NotFuzzyWarm
 #12

I have to add that if the holes I see in the pads do not also go through the PCB then DO NOT be tempted to drill some holes through the PCB! There is no (easy) way to know where there are signal traces or power planes inside the boards (they can have up to 3 internal layers) and you cannot take the risk of cutting through them and/or shorting something out..

- For bitcoin to succeed the community must police itself -    My info useful? Donations welcome! 1Fuzzyk398kDWVjuC5qPX5v6CjSkvbgAbd
How a miner mfgr SHOULD operate:  HaggsFIN trip to Canaan
-Support Sidehacks miner development. Donations to:   1BURGERAXHH6Yi6LRybRJK7ybEm5m5HwTr
philipma1957
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September 18, 2020, 01:28:21 AM
Last edit: September 19, 2020, 02:03:03 AM by frodocooper
 #13

been there done that. Grin

I see BTC as the super highway and alt coins as taxis and trucks needed to move transactions.
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