Overall the results from using the Ebay scrap were positive
The boards are a little long making programming via JTAG difficult, not to mention the 14 Pin IDC connector is not really suitable for a standard 14 pin IDC plug (a fact I discovered AFTER I returned from China with a bag full of parts).
As we can see it is a little cramped by the JTAG connector (directly inline with a fan), yep I can say officially that even a 12 Volt fan is capable of doing serious damage to finger tips and finger nails.
There were a number of issues with the FORA(For-a) video processing boards.
This is a little low for proper mining
Failure to remove it would force it’s supply to 5v, whilst it is only specked at 3V3 max
Yep We had an Idea that there was something shitty about het power-supply setup…
The Bellinix modules used are ‘programmable’ via an external sense resistor, problem was that when we replaced the sense resistor NOTHING happened to the supply voltage, in fact completely removing the sense resistor also had no effect.
This indicates that the Belinix modules are ‘non-standard’ even though they are marked as standard parts (you just gotta love the way japs do business)
So to modify the FPGA core voltage you would have to reverse engineer the Belinix DC/DC modules to find out what they had done to them, or alternatively throw them away and replace with standard product.