Search found 747 matches

by PAiA-Scott
Thu Nov 10, 2016 1:52 pm
Forum: PAiA Jabber
Topic: audio signal INTO L2E converter?
Replies: 2
Views: 17085

Re: audio signal INTO L2E converter?

Yes, audio can be patched through this section or the inverter/gain section, or, the two series-connected. The non-linear transfer through the L2E section would work to alter the waves from a VCO's triangle or sine waves, or, exaggerate signal peaks of music from a CD, MP3, etc. Settings could be su...
by PAiA-Scott
Thu Nov 10, 2016 1:44 pm
Forum: PAiA Jabber
Topic: PAIA Phlanger - Troubleshooting Tips
Replies: 12
Views: 49994

Re: PAIA Phlanger - Troubleshooting Tips

Back when these still came through here for service, we'd use a cloth towel to space the board, attached to the case pieces with line cord and connector wiring, from the case metal when powering the unit for trouble-shooting/testing. Be mindful of the mains voltage on the bottom of the board as cont...
by PAiA-Scott
Tue Oct 04, 2016 11:07 am
Forum: PAiA Jabber
Topic: 9700midi2cv8 troubleshooting help please
Replies: 8
Views: 24465

Re: 9700midi2cv8 troubleshooting help please

Replacing the uC is the first step. The extra connections for v3.0 are only for accessing the extra features and had I been thinking right, would not have mentioned this as a solution to the trouble symptoms : / Thanks for the help here Roy! About cleaning flux to help see the board joints, this is ...
by PAiA-Scott
Mon Oct 03, 2016 4:04 pm
Forum: PAiA Jabber
Topic: 9700midi2cv8 troubleshooting help please
Replies: 8
Views: 24465

Re: 9700midi2cv8 troubleshooting help please

Sorry, but sometimes a light goes off in my head, hours later or overnight.

Not long ago, we had some micro-controller ICs that exhibited the trouble as you've described. I believe I emailed all that could have been impacted, but...

The part in question has the mfrg marking ATMEL 80C51 RD2-UM.
by PAiA-Scott
Mon Oct 03, 2016 11:19 am
Forum: PAiA Jabber
Topic: 9720 VCO testing
Replies: 3
Views: 17256

Re: 9720 VCO testing

It is normal for VCO A to be at a lower frequency than VCO B for similar knob pointer settings -- roughly, one is usually about 10-11 o'clock while the other is about 1-2 o'clock for unison between the two. The LFO/Normal switch is in the Normal postion, and has an effect when actuated, right? The m...
by PAiA-Scott
Mon Oct 03, 2016 9:55 am
Forum: PAiA Jabber
Topic: 9700midi2cv8 troubleshooting help please
Replies: 8
Views: 24465

Re: 9700midi2cv8 troubleshooting help please

There are some extra connections to be made on the MIDI2CV8 board when the v3.0 is in place (illustrated on page 28 of the v3.0 supplement). Did you get these added?
by PAiA-Scott
Wed Sep 28, 2016 12:07 pm
Forum: PAiA Jabber
Topic: 9790 power header on 9700Midi2cv8 module?
Replies: 4
Views: 18169

Re: 9790 power header on 9700Midi2cv8 module?

I would have to test to be sure, but the voltage rise on the power-up of the 9771 should be fast enough to ensure a reset pulse from the +5V supply to the uC on the MIDI2CV8. If you are already set-up to check it out, powering-up with Self-test mode selected and sending a MIDI message to the MIDI2CV...
by PAiA-Scott
Tue Sep 27, 2016 6:21 pm
Forum: PAiA Jabber
Topic: 9790 power header on 9700Midi2cv8 module?
Replies: 4
Views: 18169

Re: 9790 power header on 9700Midi2cv8 module?

The same DC power connection area used to tap power from a MIDI2CV8 in a system such as the P9700S can be used to input DC power as a substitute for the usual AC power; however, some changes are required at the power switch and the Power LED section as detailed in the pdf posted here: http://paia.co...
by PAiA-Scott
Wed Sep 21, 2016 2:04 pm
Forum: PAiA Jabber
Topic: 9746 patch bay used as an I/O?
Replies: 3
Views: 18270

Re: 9746 patch bay used as an I/O?

It should be OK either way, but if using one of the two in a two-channel patch, as tip-tip only, there is a benefit to using shielded cable on the tip-tip cable, and cutting the shield wire short at one end and covering it so it doesn't touch the tip or the sleeve. Then, it will surround the single ...