Error 30 is that the connection to your pool as been interrupt. Maybe a problem with your address. Most of the time for me this error appear with i start a T3h for the first time but it goes away after like 10 min of running.

Do you have Inno monitor ? It will tell you the error code and with that I can tell you whats wrong.

I repair t3h 50t all day long. That kind of problem can be the control board not the power supply. Or that the SPI on the hash board fail.

Do you have Inno monitor? If so, does it give you an error code?

I do have all the tool that I need. I run a diag with a control board and a power supply. It tell me where the signal stop. After this, I have an oscilloscope and look at my signals and I can see SDO/SDI/CLK/CS and from that I know where the problem is. Maybe its too deep to ask something like that here.

I don't replace all the chips. Just the chips that I need to.

I change the chip from the hash-board and yes they are replaceable. They're 114 chips.. so I run a diag to see where the problem is.
And with this one in particular, it say the the SPI is failing somewhere between those chips.
I tough it was the UT3 but it isn't.

Yeah, I replace the chips but the problem always there. I change basically everything around the chip and nothing happened. Same error 24.

thx for replying!

1) Yes. They are new miners.

2) I cant see the defective board on Innoscilicon cause the board shut down. Inno monitor say error 24 (communication error from chip) and the board #2 is not working.

3) I have new chips.

I have some problems with some of my T3H miners. I got the error code 24 witch mean the communication of some chips doesn't work well.
So I get the defective board out and when I run the diag, I see that there's a problem around the chip UT3 but even if I change it, the problem still there.

Is anyone here do repair their board and can help me with that.

Always doing that but one thing I was doing before was adding tin on my chip before soldering it to the board. Now i just dont and it help a lot with that kind of problems.

Well I take the defective board out of the miner, take all the heat sink off the board, heat both side of the board at 300 degree and then i can change the chip i need to. I dont know if this forum will be helpful with that kind of problems.

I tried to repair the first board on my T3 and my signal SDO doesn't go through chip UT1.
I change the chip 3 times but the problem remain.

I notice that the amperage keep rising when the board get hotter and stop
at 10A after that all signal go trough chip UT1 but they are messed up

can anyone help me on this?