Originally Posted by ter1
Thanks, you shorted only 2 caps for line-in, but 4 for front-out, were you missed 2 others for line-in/mic? That may allow 5v DC for one channel.
Waiting for your update.
Also, do you mean that there will be no use if I bypass additional 3 2uf, 1uf, 1uf caps? Thanks!
The 5 volts for the mic is injected between the flexijack & the line in coupling caps & if you don't use the flexijack for a mike then the 5 volts is not injected.This voltage is injected on the right channel, in other words the ring on the tip ring sleeve 1/8th inch plug. In Windows Vista you can actually disable individual inputs so they don't show & can't therefore be selected. For those with Windows XP I'm not sure if that can be done so I no longer recommend shorting the line in coupling caps on XP machines. If you short them on a Windows Vista machine make sure you disable the mike input for the flexijack first.
Update, tried to find where to disable inividual inputs on XP but was a no go.
For those with Windows Vista to disable the mike inpute for the flexijack right click on the speaker icon in the taskbar & select recording devices then right click on micrphone & select disable.
There are two other coupling caps in the line in circuit after the line in opamp. These are 47uf caps on the other side of the ADC & very very close to those 4 large caps above the ADC.
I'm waiting on a new board as I was probing around on the board when it was live & accidently shorted the power supply to the relays to the left channel line-in. When there is no plug in the flexijack the left channel is shorted to ground. When I accidently shorted the relay power to the left channel line-in ther was no plug in the flexijack & I ended up blowing the left channel trace & seems like all of the opamps that lead to the ADC may have been fried as well, even the ones behind the second set of coupling caps. I will be getting new Elite pro card on tuesday if all goes well. The output section on the old card still works so I'm still able to listen to music on old card, just not able to do anymore RMAA tests on this card.
The other caps other than the ones I mentioned to bypass with metalyzed film caps are for the line-in & have no bearing on the sound you hear at the speakers though they may improve the specs as read by RMAA & help if you plan on doing any recording with the line-in.