I used 22pF on the new boards. It's been working fine for my machine. The best place to solder them in is underneath the 34-pin IDC cable pins - pin 1 being the clock, and any of the surrounding pins being ground. Speaking of the new boards, I have 3 built now (the shifter socket adapter boards, tha...

Thanks for finding this out Icky! Amazing work!

If you guys have got enough motivation left to do that, then that would be awesome. I suspect that the problem is in the machine rather than the DVI board, though. All the boards were tested on my machine before I sent them out, and Troed had the same problem with 2 different DVI boards. Hey, random...

This is kind of on hold at the moment - I need to get my hands on one of these machines with the resetting behavior.

As a mad idea, could you double the length of your ribbon cable on your board and try tests again ? Make sure PSU is at 5V or even 5.2V. It worked perfectly for at least ten minutes with a 10cm cable (no bad reads) - when I increased it to 12cm it wouldn't even boot up once. Crashes immediately wit...

I don't know if anyone else does this, but after replacing my last ruined iron a few years ago I heard this advice, which I've been following since... after turning the iron off each time I use it, I coat the tip in solder to protect it from oxidising. By the way, soldering iron tips aren't solid ir...

Haha, I'm sure my boss would love it, and everyone under 30 would be confused!

Will do! ...soon, but not for a couple of nights, I have my work Christmas party tomorrow.

I can't actually set the voltage - my bench power supply can only supply 1.5A and the ST is just a bit too much for it. So I just have the ATX power supply which is fixed.

Oh, right. That was a DC offset. On the scope I saw occasional noise on the HDMI board ground of up to about +/- 650mV relative to PSU ground. But that shouldn't affect the level shifting buffer direction signal, I think, as it's localised to the mod board only.

I measured a differential of around -4 millivolts between the FPGA board to the chassis ground (measured off the big electrolytic near the power supply). Not too bad considering the whole mod draws a lot of current (over 300mA).