headphone out problem

[sfr]

hey folks,

Ive completed my XoXboX and the only problem so far is that my headphone out is ony just audible. I thought to ask here for any hints or tips to help solve the issue?

thanks
sfr

[guest]

if you have a mixer
plug the mixout into it
and see if the sound level is good

then check that you have a solid 6v
on pin7 of ic14

[stur]

You can tell this is a hobby I've little time for!

Mix out is fine to the ear

Ic14 = 5.5v

[guest]

what are the voltages on all pins of ic14
listen with a pair of headphones
on all pins of j5

[sfr]

hi ,
just ignore that last reading on pin 7 as i hadnt grounded properly!

i have a pair of headphones, do i wrap wire around the sleeve and ground it - then simply probe each pin?

these are the reading from each pin
1= 0.84
2= 1.89
3= 1.92
4= 2.53
5= 0.00 -
6= 1.38
7= 6.04
8= 0.82
9= 0.16

thanks

[guest]

connect an alligator clip or wire to the sleeve
and then touch the tip to pin1 of j5
if you dont hear anything
try pin6 of ic14
you should hear a quick pop sound
then listen on pin2

[guest]

turn the power off
and measure the resistance to ground
from each pin of ic14

its looking like a bad chip

[stur]

Thanks very much for your time and assistance guest.
It was indeed a bad chip, trying to operate the wrong way round!

Must have been one that I did in the early hours with a few beers in me.

Cheers

[guest]

did flipping it the right way around
fix the problem

glad to hear you found the cause

[stur]

Yep!