Search found 747 matches

by PAiA-Scott
Sat Mar 05, 2016 8:58 am
Forum: PAiA Jabber
Topic: Synchronization Question
Replies: 15
Views: 57588

Re: Synchronization Question

...nothing like having a devices set-up and operating for experimenting... I set up a TR909 as the MIDI Input to a 9700 MIDI2CV8 in the DIN Sync mode as a source for control signals to a 4780 Sequencer module. OK, it's simple. As is recommended for external sync clock, set the 4780 Run/Stop to Stop ...
by PAiA-Scott
Mon Feb 29, 2016 5:37 pm
Forum: PAiA Jabber
Topic: 9710 VCA/Mixer - Test #4 & #6
Replies: 10
Views: 47413

Re: 9710 VCA/Mixer - Test #4 & #6

Hello Nic & Tenchi. The “trouble” checks following each Testing section are only very general. For example, for Test #4 check IC4, Q3, Q4 or associated parts, and, IC6 and Js 3 and 6 wiring – this simply implies verifying the parts are the ones specified and with the proper polarity, good soldering,...
by PAiA-Scott
Fri Feb 05, 2016 6:11 pm
Forum: PAiA Jabber
Topic: 9700 mods, pot replacements
Replies: 5
Views: 23755

Re: 9700 mods, pot replacements

Hello Tim.

Below is a link to a pdf with information, and ideas which you might find useful.

http://paia.com/manuals/docs/PAiATalk.1.pdf

Thank you.
by PAiA-Scott
Tue Jan 26, 2016 11:49 am
Forum: PAiA Jabber
Topic: 9700 mods, pot replacements
Replies: 5
Views: 23755

Re: 9700 mods, pot replacements

PAiA Talk.pdf
(31.45 KiB) Downloaded 1446 times
by PAiA-Scott
Tue Jan 05, 2016 11:31 am
Forum: PAiA Jabber
Topic: No Volume Control on Theremax
Replies: 2
Views: 18944

Re: No Volume Control on Theremax

Hello Mandy. The power supply getting hot points to more current flowing than is usual. Maybe it is as simple as the volume antenna cable having a short between the internal and shield wires. The internal has the Q4 collector voltage which is right off the V+ supply (through a 680 ohm resistor and t...
by PAiA-Scott
Wed Nov 18, 2015 5:27 pm
Forum: General, Etc.
Topic: Adding a Connector for Power
Replies: 0
Views: 27869

Adding a Connector for Power

PowerConnectorAdd.pdf
(43.87 KiB) Downloaded 2048 times
by PAiA-Scott
Tue Nov 10, 2015 11:54 am
Forum: PAiA Jabber
Topic: Help for TubeHead DC rectifier
Replies: 8
Views: 25006

Re: Help for TubeHead DC rectifier

Hello Peter. Good! The voltages you report are good too. IC1 might be getting voltage near its normal limit of 18V, causing it to run warm-hot. This is OK. They can operate up to 22V, possibly even higher. The DC power supplies on the board are unregulated, so the more the AC voltage from the transf...
by PAiA-Scott
Thu Nov 05, 2015 2:50 pm
Forum: PAiA Jabber
Topic: Help for TubeHead DC rectifier
Replies: 8
Views: 25006

Re: Help for TubeHead DC rectifier

The modification I mentioned is the last example posted here: http://www.paia.com/ProdArticles/tmpmod.htm However, it is for the 9407 Tube MicPreAmp rather than 9305 TubeHead, and tapping DC from the negative supply, but it could have been a reason for the extra current flow if it had been in place ...