To do this tests you need a hashboard tester ...

Hi

Take out the boards on 7 and 8 connector (2 and 3 from left to right).
Move the 6 board to 7 or 8, start the miner with this one board. If its still 0 asics, this board has isues.
Live the miner with 2 board till you get the 3rd.

I think the control board is broken.

Hi
I did not repaired T17e, but,
on s9 and T17 when this problems occured one of the cips wass not weldet properly.
Have you change the place of board, whith other board?
Only after put the board on test tool and measure the 5 signals i descovered the problems.
Home user withowt tools and knowledge cannot fix this.

This is how chips are numbered.
https://www.imagebam.com/view/ME8IINC
If see only 30 chips the problem can be:
Chip 30 - not weldet good
Chip 31 - broken or not weldet good
LDO voltage of domain with chips 31,32,33.
Check 5 test ponts voltage with test tool.
Why you changed heatsinks?!?!

This devices work with high temperature.
The solderings are made with lead-free soldering paste, and are verry breakable.
Just the phisical manipulation of the board can cause detachament of one ore more chips.
The only solution is cleaning inside the casse with copressed air, and whe they are at normal temperature.
Otherwise you wil cause temperature stress.

If the chips get loose, unfortunatly you must resolder, or change, in any case you need special equipment and skils! 

The most common problem is one ore more chip's from a board are schort circuit.
The second, one ore more chips have bad soldering, this can be diagnosed by pushing gently the chip radiators with finger, the 'big' radiators, not the small ones.
The third, problem with power supply of each board.

2021-09-28 13:49:43 over max temp, pcb temp 0 (max 80), chip temp 15(max 95) pcb temp rise 0 chip temp rise 0, total_exit_failure 0
2021-09-28 13:49:43 stop_mining: over max temp
2021-09-28 13:49:43 uninit_temp_info
2021-09-28 13:49:43 do not read temp anymore...
2021-09-28 13:49:43 cancel thread
2021-09-28 13:49:43 cancel thread
2021-09-28 13:49:43 cancel thread
2021-09-28 13:49:43 ****power off hashboard****
2021-09-28 13:49:45 temp monitor thread exit

too hot.

OK,
After some research i figured out.
The apw9+ start only if is connected to control board and control board to a hash board, or more...
Now next step, hash board dissect ...

Hi!

A apw9+ deliver high current without any hash board connected?
I have a s17+ miner and the PSU feed the control board and vents, but on the high current i have 0 volts.
I dont know if there is a PSU problem or something else...

Tnx

Hello!
I have a non-voltage source.
There is nothing visibly flawed inside.
The capacitors in the primary part are charged at 310v, the relay does not engage.
From the youtube clips in the enclosed area I should have ~ 13v. I have 0v.