I can't be 100% sure about this, sight unseen,... but...
If you followed my step-by-step setup and record-test, you should have recorded 4 equal tracks of the same mono signal, simultaneously.
If you're not getting signal passed to the tracks on Tracks 2 & 4, then it's starting to sound like there's a hardware problem. I have to qualify that with, "sight unseen & best guess effort".
Keep trying. If your Porta doesn't register signal on Tracks 2/4, then ultimately it may be deemed in need of service.
I'll check my posts, & my procedures/tips asap on my own 424mkIII, when I get home later tonight,... just to see if there's any key item I omitted.
Hang in there!!
PS: Where and for how much did you get the 424mkIII? Is the original owner available to take your questions or offer advice?
/DA
TIP: try doing the same 4x track test, above, but use each Input Channel in succession,... Test from Input 1, Input 2, Input 3 & Input 4,... with all other steps being the same.
TIP2: If there's no signal passed to Tracks 2/4, then that MIGHT indicate a problem with Buss-R on the Main section of the mixer. You should be able to determine this by setting the L/R-Stereo in the Monitor section and listening in headphones as you pan left and right.
TIP3: After doing the other-inputs test, per the above, switch each track to DIRECT mode recording, and test again using all 4-inputs.
If there's any confusion on what I just said, consult the manual again and/or post your questions here.
Pls keep us posted!!!
Thanx!!
