Replacing the DC PSU

Great video, thanks. I'm thinking of replacing the stock PSU using the method in the video. As I have a GDEMU do I still need to connect the 12v wire to the board? Is this the beat way of reducing the heat when usinga GDEMU? Thanks for all the help everyone.

 

You shouldn't need the 12v connected, but it doesn't matter much either way these power supplies are much more efficient and won't add significant heat like the original power supply.

 

Great, thanks for the advice.

 

I'm about to attempt this mod for both Dreamcast and Saturn and I'm in the process of ordering parts. I was hoping someone could post a link to a proven quality power brick to use for both systems after the pico is installed. I've checked eBay and it's hard to tell what's going to be junk or not.


Thanks!

 

http://assemblergames.com/l/threads/replacing-the-dc-psu.53856/page-15#post-922892

 

Could you confirm please fir DC with GDEMU or USB GDROM, a pico without 12V connect is sufficient?
THX

 

That is how I run my Dreamcast. No 12v connected, just 3.3v and 5v. I'm using a USBGDROM

 

12v is only used to power the original GD ROM

 

Been working fine for me.

 

Only the gdrom board used the 12V.

 

THX all

 

I got interference aswell im not using 12v i have an GDEMU. But i have a cheap chinese power supply!

 

I have been using the power supply from my seagate external drives. It is 12v 2 amps. Very small and is so far very reliable.

 

Dear all

Could say me all I need parts for made it my self, whar's Pico and power supply advice me (link to amazon please). Onething I am looking for this parts but I have not the reference for found it on Internet, could you help me please THX.

 

https://www.digikey.com/products/en?keywords=A106608-ND Power Switch header

you can also check out my 3d printed mount here https://www.thingiverse.com/thing:2308511 I have a list of parts I used to interface the PicoPSU with my Dreamcast

 

Is 2amp really enough?

 

It will probably work for most situations.
The original power supply would supply 12v 1a, 5v 3a, and 3.3v 3a as its maximum output.
We don't use 12v so we have a maximum of 25w that the system could draw off the voltages we use. Its probably a lot lower than that in reality most supplies are built for a good margin of error.

12v 2a power supply provides 24W of power, the PicoPSU is fairly efficient at power conversion but for the sake of this we can assume its 80% effiecient so we should see around 20W of power into the system. I would personally suggest at least a 12v 2.5a supply just to be safe but I don't see why it wouldn't work with less power. The quality of the external supply is much more important as a cheaply made one will introduce noise into your picture and just make it look bad.

 

I just picked up a second print of his picopsu mounts. Will be installing later tonight. Thanks again!

 

So nice, please make a tuto.