Quote from: wndsnb on October 28, 2020, 01:08:19 PM

Started work on the 1st S17 from my host. 2 hashboards showing 0 chips. Turns out both of them have heatsinks that are misaligned enough to short to the adjacent row.

https://i.imgur.com/fmRtdr5.png?1

After moving this heatsink back into position, this board comes up and identifies all chips, but the test fixture is showing a couple of bad chips so it looks like I'll need to replace a few.

The 2nd board is still not coming up after moving heatsinks back into position. Looks like an issue with the pic microcontroller on the board not enabling power so I ordered a pic ISD (pickit 4) to investigate that further. Hoping that Bitmain did not set the read protection on the pic flash so I can read out the firmware to be able to program a replacement chip if necessary, but I'm thinking chances of that are close to 0. If not, it looks like zeusbtc sells a download for pic firmware for all Bitmain's miners.

Also, just another thing I noticed with both these hashboards was that there were insect wings (looked like moth wings) blocking a few of the input side of the heatsinks. Could be what caused some chips to overheat enough for the heatsinks to slip. The solder holding the heatsinks on is low-temperature solder, so it will melt at under 150deg C.

Hello, I just got a T17+ and it arrived with a damaged chip/sink and it won’t read the other chips...
Any suggestions what I should do and if there is anyone that could help me change it?

Would it be smart to glue it with thermo adhesive cpu past in the mean time until i can change it? Would that help in any means?

Thank you