tc electronics xii programmable phaser guts

~arph · Post by **~arph** » 10 Feb 2011, 08:28

In for repair, this one has seen it's fair share of kludging. In a previous "repair" the ground connection to the case was lost, resulting in intermittent on/off switching. Also one of the transistors was fried due to the previous fixer, connecting a NAND output that should have been left unconnected.

All defaced IC's. Far to complicated to trace for me. (the component side is the problem). Single sided board though. There is a partial schematic for the classic xii, seems like a good start.

There is components underneath the Jacks too.

Credits, Brian Fox:

https://i194.photobucket.com/albums/z14 ... aser-1.jpg

okgb · Post by **okgb** » 10 Feb 2011, 13:46

I had repaired the dual eq years ago
at that time they sent me the schematics
[ sadly i can no longer find them ]
the opamp used was merely a common quad
that had it's number sanded off
see if the pin out matches one

~arph · Post by **~arph** » 10 Feb 2011, 15:08

Yeah I suspect Quads, but also a CD4007 and a CD4011

borislavgajic · Post by **borislavgajic** » 10 Feb 2011, 20:04

It is 6 stage optical phaser.........as I see from photos.........

cheers

Boris

arayita · Post by **arayita** » 11 Feb 2011, 00:35

borislavgajic wrote:It is 6 stage optical phaser.........as I see from photos.........

cheers

Boris

Just like the Mutron Phasor II. I don't know how Tc's phaser sounds, but PhasorII is really: HOLLY GRIAL of PHASERS!

~arph · Post by **~arph** » 11 Feb 2011, 16:01

It sounds great!

Definately the most versatile phaser I kow. Can't compare it to the phasor II though.
The only drawback is a slight volume drop when engaged.

Stephanovitch · Post by **Stephanovitch** » 15 Sep 2012, 08:32

The schematic of TC XII:
http://9giga.sfr.fr/n/50-17/share/LNK320050543c270b3a0/

Stephanovitch · Post by **Stephanovitch** » 15 Sep 2012, 08:38

Sorry it's an incomplete version

Fender3D · Post by **Fender3D** » 15 Sep 2012, 16:08

I can't connect there, mate...
Why don't you just upload here on forum?

uncleboko · Post by **uncleboko** » 15 Sep 2012, 18:43

Fender3D wrote:I can't connect there, mate...
Why don't you just upload here on forum?

Windows 7 refuses to download the schematic, I agree it would be much simpler to upload it here - many thanks.

JiM · Post by **JiM** » 16 Sep 2012, 10:44

Stephanovitch wrote:The schematic of TC XII:
http://9giga.sfr.fr/n/50-17/share/LNK320050543c270b3a0/

File attatched for your convenience.

uncleboko · Post by **uncleboko** » 16 Sep 2012, 14:31

Many thanks, that looks like the control circuitry only!

uncleboko · Post by **uncleboko** » 16 Sep 2012, 14:34

Ah ha, I found this!

biliousfrog · Post by **biliousfrog** » 16 Sep 2012, 15:57

uncleboko wrote:
Fender3D wrote:I can't connect there, mate...
Why don't you just upload here on forum?
Windows 7 refuses to download the schematic, I agree it would be much simpler to upload it here - many thanks.

It's probably your browser or security software, I can view it with Chrome and Firefox on Windows 7 (32bit and 64bit) and Vista (64bit) and also my Android phone.

uncleboko · Post by **uncleboko** » 16 Sep 2012, 16:29

biliousfrog wrote:
uncleboko wrote:
Fender3D wrote:I can't connect there, mate...
Why don't you just upload here on forum?
Windows 7 refuses to download the schematic, I agree it would be much simpler to upload it here - many thanks.
It's probably your browser or security software, I can view it with Chrome and Firefox on Windows 7 (32bit and 64bit) and Vista (64bit) and also my Android phone.

Ah yes many thanks, I have Firefox for downloading from Youtube, completely forgot about that!

Fender3D · Post by **Fender3D** » 01 Dec 2014, 12:46

Ok guys,
I know this is an ancient thread...

but...

This is the schematic:

TC-XII-page1.pdf: XII Service Manual; (427.61 KiB) Downloaded 401 times

TC-XII-page2.pdf: XII Service Manual; (969.85 KiB) Downloaded 338 times

TC-XII-page3.pdf: (374.26 KiB) Downloaded 316 times

TC-XII-page4.pdf: (412.31 KiB) Downloaded 338 times

and this is my take at it...

cheers

chicago_mike · Post by **chicago_mike** » 01 Dec 2014, 22:52

that's some stylin pimp shit right there.

Dirk_Hendrik · Post by **Dirk_Hendrik** » 03 Dec 2014, 07:58

Pretty!
very Pretty!

brejna · Post by **brejna** » 03 Dec 2014, 12:42

Wooow! Great work!

~arph · Post by **~arph** » 03 Dec 2014, 19:37

Very nice!

Nice phaser isn't it?