PTH chips

[Argelfraster]

I have fried at least 6 PTH chips trying to power my N64.
I always wire them up correctly, and there are always sparks between the capacitor and one of the resistors on the PTH chip.
One in a while it explodes and destroys the wiring.
What am I doing wrong? Is there another regulator I can use?

 

[eurddrue]

I have fried at least 6 PTH chips trying to power my N64.
I always wire them up correctly, and there are always sparks between the capacitor and one of the resistors on the PTH chip.
One in a while it explodes and destroys the wiring.
What am I doing wrong? Is there another regulator I can use?

Take pictures of your wiring. Which PTH chips are you using?

 

[Joeyjoe9876]

*Can'tSayThisOnTV* man your just wiring it wrong

 

[ToastBucket]

If the cap is exploding, its probably wired backwards. Check to make sure you know which leg of the cap is + and which is - because its not always clear.

 

[Argelfraster]

I know the cap is wired right, but does it matter how short the pins are?
Does it matter which side of the chip you wire to?
I used PTh08080WAZ and WAS

 

[ToastBucket]

Yes it matters. Wire to the solder pads on top. Not the pins.

 

[Argelfraster]

On top is where the sparks happen.
Why is that?

 

[fatiguedmetal]

If there is a spark and the cap blows it is wired backwards. Period.

Either the cap is wired backwards or the entire Pth is wired backwards.

One way or another you have positive going into the cap where the negative should be.

 

[Argelfraster]

Negative on the capacitor is on the same side as that black line that has (-) signs right?

 

[ToastBucket]

It should be but you never really know. If you take a pic of how its wired, we can probably telll you.

 

[Argelfraster]

IDE cable is there on a fried chip just to show how I wire it.

 

[Basement_Modder]

That's wired correctly...

I assume that flaxty-ass solder job is to blame.

 

[Argelfraster]

I just threw this together to show how I wired it...
And why is it so bad?

 

[fatiguedmetal]

Why does it look like the bottom - gray wire is touching the 3.3v gray wire AND the negative side of the capacitor?

 

[eurddrue]

Why does it look like the bottom - gray wire is touching the 3.3v gray wire AND the negative side of the capacitor?

That's what I was thinking!

 

[Argelfraster]

It's not touching, its just the angle the picture was taken from.

 

[XCVG]

Dang, I'm stumped. Maybe you just got defective regulators? I've got defective amps from TI. Both chips only had one working channel.

 

[Argelfraster]

Yes it must be defective ones...
I ordered a few more samples, I'll let you guys know how it turns out.

 

[ToastBucket]

If they don't work, switch to the PTH08000's

 

[Basement_Modder]

If they don't work, switch to the PTH08000's

I have been through like 10 of these and love them. Only ever had one 08080, from ßeta.