Adjusting pot on an OCZ GameXStream 600W

[JeffG]

The GameXStream 600 is a rebadged Fortron FX600-GLN, so responses from anyone who's worked with either supply are welcome..

The rails are within spec, but still off more than I'd like:

3.3V: 3.18

5V: 4.95

12V: 12.35

I have verified these voltages.

Since the unit is out of warranty I'm going to crack it open and adjust its potentiometer (it has just one)..

So two questions, if anyone knows:

1. Does this single pot adjust all three major rails (I'm thinking it's just for +12V)?

2. If I lower the +12V voltage, will that bump up voltage on the 3.3 and 5V rails? That's what I'm aiming for.

If I can't get an answer (OCZ tech support was useless) I'll just go ahead and see what happens. But I'm hoping for a few informed opinions first..

Thanks,

Jeff

 

[JeffG]

Ah never mind. I found the info I was looking for:

"www(dot)pcmoddingmy(dot)com/e107_plugins/content/content.php?content.375.4"

Looks like the pot adjusts 12V and 5V, not 3.3V. But I still wonder if reducing voltage (instead of increasing it) will bump up the 3.3V rail. If I don't get any responses within a few days I'll try it and see.

"We found only one potentiometer on the PCB, which had a little green electrical insulator applied to seal it from turning. Having no idea what this does, we decided to try tweaking it after we had finished our performance testing just in case we messed up the factory setting. We jump-started the power supply on zero load, and hooked it up to a digital multimeter. Without tweaking, the +12V rail read at 11.95V, the +5V rail at 5.29V and subsequently the +3.3V rail at 3.34V. After marking the original position, we carefully turned the pot with a screwdriver (and breaking the liquid electrical insulator seal at the same time of course). We noticed an increase to the +12V and +5V rails but the +3.3V rail wasn’t affected. At the maximum setting the +12V rail read at 12.53V and the +5V at 5.54V."