by arjepsen » Sun May 07, 2017 8:24 pm
Ok, seems I found and solved the problem.
As mentioned in other posts, I've sort of extensively hacked my HDR for quiter and cooler operation:
I've installed a pentium 3 processor (which runs cooler than the original, even though clocked higher).
I had some problem with glitches when running at 48khz, but that turned out to be the front side bus set at 100mhz. I jumpered it back to 66mhz and that sorted out that problem.
I also installed a opt-24 card, so I could get rid of the whole card-cage. (I detached the from the card-cage, and put it in an electrically safe plastic bag), then I made a thin wooden plate for the opening where the card cage had been, and put the mouse/remote connector pcb on the wooden plate. This opened up the space above the cpu, so I could install a larger heatsink. I put a 80mm Noctua fan on this, so I could get more airflow, and I'm running it at 7volts so it's virtually silent.
On top of that, the chipset cooler was just a passive heat sink that got quite hot. I removed that and installed a new one with a very quiet fan on it.
I had also noticed, that some components in the area of the bios chip got very hot - too hot for my liking - so I installed another 80mm Noctua fan to blow over that area - also 7volts.
Now back the the recent problem - I noticed the lcd front panel would start to dim before i hung, so I suspected that there might be a problem with the power supplied to it.
I had installed a new BeQuiet psu which also is virtually inaudible. However, being a modern psu, it only had a few old molex connectors - the rest being sata power connectors. So I had used dividers to distribute the power to the rest of the system. So that particular rail of the psu was powering everything... Hmmm..
I then moved the fans to the motherboard fan connectors instead.
And voila - problem solved!