Identifying the proper power supply for home systems

[Vectorman0]

I don't have much experience with home systems, but I've read about different revisions needing different power supplies, and I think some systems even having the wrong power supply listed on the bottom? Am I correct?

Does anyone have a guide for figuring these out?

 

[Xian Xi]

Easiest way to tell is by opening it. It's the only sure fire way.

 

[Vectorman0]

Will it say on the bottom of the mobo?

 

[Xian Xi]

Will it say on the bottom of the mobo?

You just need to look by the power switch. If you see a big green 3 prong device then its a 5v mobo. If you dont see the green device and see a 5 pin device that says TO-220 them it's a non 5v system meaning it can you a 9v-13v power supply.

 

[Vectorman0]

Wouldn't a TO220 only have three pins as well?

If it's a 9v-13v system, how many amps are needed? Can you recommend a replacement power supply for both models? I think the Neo Store may still carry one of them.

 

[Xian Xi]

The actual device is an LM2576 regulator. It's just in a TO-220 package.

 

[Vectorman0]

Okay, I have a black 3-pin voltage regulator labeled "B1135". I can't seem to find a datasheet for this. I imagine it's equivalent to the green 5V one you speak of, but I want to be sure I have the proper working power supply before I start troubleshooting this system I bought as broken. (this is different than the system with bad audio I posted in another thread)

 

[Xian Xi]

Can you post a pic of that area?

 

[Vectorman0]

I took these while I was in a hurry earlier today, let me know if you need better pictures or if I didn't get the right angle on something.

These are attached through the forums: right click -> 'view image' or 'save as' for the full size

 

[shadowkn55]

You've got a 5v system there.

 

[Xian Xi]

I took a pic of the LM2576 so everyone knows what it looks like: