I am going to keep working on my boards and will probably get there in the end. One approach I will probably take if I cannot get the hang of replacing chips is what you are saying and that is to bypass the faulty stages.
This is not quite as simple as it sounds as the chips and level shifters need to be removed then the signals connected directly to the next stage and the voltage reduced to allow for the shorter chain. It does however require the first stage to be operational as that has the oscillator.
If I can get to grips with repairing hash boards and also ideally making pre V1.91 boards undervolt I will post up all the information.
However If it fails, and will go with one board anyway, with Sidehacks latest recycling project which is a very attractive alternative.
Rich
Then i wish you good luck.
I invite you to start a thread and act as a journal, so that people can keep track, learn and give feedback.
Personally it would be of interest to keep track of.
It's a bit bothersome for me since I have plenty of time to put time on repairing this board, but i'm afraid without some sort of map that show me what everything should be at, i can't figure out what the problem is. And once i figure it out, i don,t even have the pieces to repair the board.
In your case if you had several dead boards. You could more reliably just swap bad parts and probably be able to get a high % of dead board working by cannibalizing the rest of the boards.
