n64p voltage help

Cojiro · Post by **Cojiro** » Wed Oct 28, 2009 5:39 am

fully charged, my battery (pdv-0700) puts out about 7.76v.

when my n64 is hooked up, the 3.3v line only gets about 3.13v, and when the n64 is turned on it goes down to 2.85v. the 12v line (7.76v) gets about 7.26 when the n64 is turned on.

does anyone know what i should do next?
thanks

mako321 · Post by **mako321** » Wed Oct 28, 2009 5:54 am

how are you getting the 3.13v out anyways?

Cojiro · Post by **Cojiro** » Wed Oct 28, 2009 1:04 pm

with the texas instruments chip

Cojiro · Post by **Cojiro** » Wed Oct 28, 2009 2:15 pm

i used wires that i got from the n64 controller for the portable.
are these wires too small?

mako321 · Post by **mako321** » Wed Oct 28, 2009 2:17 pm

08080/08000? what value resister and capacitor?

snowpenguin · Post by **snowpenguin** » Wed Oct 28, 2009 2:40 pm

Oughta use thicker wire, although I don't know if that would cause this problem.

Cojiro · Post by **Cojiro** » Wed Oct 28, 2009 3:57 pm

the same resistor and capacitor in harshboy's diagram. i tried using both chips, which produced the same results.
should i use thicker wire (i can if i need to, it wouldn't be that much trouble) or can i leave it like this

snowpenguin · Post by **snowpenguin** » Wed Oct 28, 2009 4:36 pm

You should. For power lines it's best to use at least 22 AWG wire.

Cojiro · Post by **Cojiro** » Wed Oct 28, 2009 9:11 pm

i rewired everything with bigger wire, and am still getting about 3.13v. if the battery is putting out about 7.67v, than the battery cannot be the reason that i'm getting only 3.13v coming out of the chip, correct? is there anything else you would suggest?

hailrazer · Post by **hailrazer** » Wed Oct 28, 2009 9:24 pm

Check your resistor with your meter and make sure it has the correct value. Some have a 20-30% tolerance which can mess things up a bit.

timmeh87 · Post by **timmeh87** » Wed Oct 28, 2009 9:39 pm

What is the battery voltage while it is running?

Cojiro · Post by **Cojiro** » Wed Oct 28, 2009 9:48 pm

the battery voltage while it is running is 7.26 on one side and 3.13 on the other side. the screen turns on fine, and on the console the led turns on (though i have come to find that the led being on means almost nothing)

i do not think that the resistor is the problem. when i got the resistor on ebay it was $1.50 for a pack of 100, so i am easily able to waste one if i need to... anyway i took the resistor i was using off and replaced it. still the same.
thanks

Cojiro · Post by **Cojiro** » Sat Nov 28, 2009 9:29 am

hey guys, just to make sure, is it okay to use this battery

http://cgi.ebay.com/Universal-Rechargea ... 1176wt_804

(the one ben used in his ps2p) for my n64p?

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