Custom GC regulator won't work.

[SonyQrio]

So I soldered directly to the capacitors on the back of the board shown here:

I wired my custom reg to 1.9v and to 3.3v as well as hooked up ground to the point shown. When I turn it on, I get nothing. But, when I plug the regulator board back in, it works fine.

I've also tried tapping 1.9v and 3.3v off of the original regulator, and it still won't turn on.

Any ideas?

 

[bentomo]

What kind of regulator are you using? The 1.9v line draws about 6 amps

 

[SonyQrio]

PTR08100W w/1k resistor outputting 1.753v.

PTH08080W w/ 1.8k resistor outputting 3.424v.

 

[Ashen]

Do you have 1.9v going to both the GPU and CPU? those lines need to be bridged for it to work. Just like in the pic.

 

[SonyQrio]

Yep they're bridged.

 

[Ashen]

Hrmmm.... What power supply are you using to power the custom reg? GC power supply? Pics of wiring and such would help.

 

[SonyQrio]

15v 2A......... *realizes*

2AMP OH IS IT BECAUSE MY PSU IS ONLY 2A?

Then why would it power the original reg board?

 

[bentomo]

No that's not why, when the voltage drops the amps will go way up and compensate.


Watt rating

15v x 2 amps = 30 watts
2v x 15 amps = 30 watts

Basically at 2v your power supply can give 15 amps