Thanks guys for all these suggestions.  I have ordered my Liquid Pro around 10 days ago, and now waiting for it to arrive.  To get my self prepared, may I ask how I should commence with my repair?:

Problems suffered:
1) 2 miners got their whole board not running.  Even the fan on the failed side did not run !!!, The 2 little lights at the back of the PSU got 1 turned "yellow".

2) 3 miners got 1 out of 4 cores not working.

3) some miners got extremely hot, and occasionally stop 1 core, but will return when rest for a while.


Potential solution that I've read from this forum:
1) remove the copper plate, take out the "white" rubber inside, then re-fix the copper plate on the water block.  (really? can someone confirm this works?);

2) remove the thermal paste and apply Liquid Pro.  (this has been proven here I suppose.  Can someone teach me how to apply? 1 little droplet in the middle of each chip, or spread them over the whole chip?  Need to apply on the copper side?)

3) remove the "black & white" chaser cable.  I have tried, no use.

4) switch the power supply large cables between the two boards.  i.e. the supply originally to left board now connect to right board, vice versa. (will try this out maybe)


Can someone confirm the above "potential solution summary", and summarize some key points that I should be aware of before I commence with my Liquid Pro application?

Thanks a million brothers.