DeArmond - Twister ( Model 1930 Phaser )

Discussion regarding early stompbox technology: 1960-1975 Please keep discussion focused and contribute what info you have...

Re: DeArmond - Twister ( Model 1930 Phaser )

Postby fernieite » 30 Oct 2010, 20:25

borislavgajic wrote:Please could you post values of marked components..... :thumbsup

Thanks

B.


See edited post above
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Re: DeArmond - Twister ( Model 1930 Phaser )

Postby borislavgajic » 30 Oct 2010, 20:33

wow that was fast!!!!!

only 3 resistors hidden ...R1 R2 R3........please :hug:

and thanks very much!!!

Boris
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Re: DeArmond - Twister ( Model 1930 Phaser )

Postby fernieite » 30 Oct 2010, 20:56

I don't know how to read resistors, so I'll take another pic. I don't see R1 on the photo - just R2 and R3 are circled.
BTW, you can't see it in the pics, but on the bottom right, there is a small green 102K cap to the right of the big green 474K.
I listed that in my values, but wasn't sure if you caught that.
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Re: DeArmond - Twister ( Model 1930 Phaser )

Postby fernieite » 30 Oct 2010, 21:06

These two show the R2 and R3 resistors.....
So, whose going to help me figure out the problem with my unit? :hmmm:
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Re: DeArmond - Twister ( Model 1930 Phaser )

Postby borislavgajic » 30 Oct 2010, 21:12

That is all Sir ....Thanks ...on photo 007 :thumbsup .....I have all values now........and working ......so tomorrow I'll post PCB....

if someone here could post finished schematic now please????
AG and Dirk ???

thanks again......I hope we are going to solve your thumping issue now!!! :applause:
:thumbsup :thumbsup :thumbsup

Boris
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Last edited by borislavgajic on 30 Oct 2010, 21:35, edited 1 time in total.
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Re: DeArmond - Twister ( Model 1930 Phaser )

Postby fernieite » 30 Oct 2010, 21:22

Here's some better pics of R1 (I see it circled now )
I don't know if you noticed, but C9, C10 and C11are all orange 47K 1kv caps

Oh yeah, in answer to a PM, this thing thumps fast or slow according to the rate pot and it does do the phase thing at the same time. It sounds really good actually! Now, If I can just get rid of the damn thumping.......
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Re: DeArmond - Twister ( Model 1930 Phaser )

Postby borislavgajic » 30 Oct 2010, 21:39

Thanks man, and do not worry I hope here you'll find way to fix thumping problem soon......
I posted components in post above....now going to drink some beer with my friends.........and tomorrow I'll ad some tracks on that PCB!!!


have nice evening to you all phaser lovers.....! :mrgreen:

Boris
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Re: DeArmond - Twister ( Model 1930 Phaser )

Postby John Lyons » 31 Oct 2010, 05:38

Try putting a 470uf across the +/- of the power supply.
This usually helps with "ticking" but it may solve what
you have as well. The Oscillator is usually a "thump"
sound so maybe the oscillator is bleeding into the audio path.
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Re: DeArmond - Twister ( Model 1930 Phaser )

Postby borislavgajic » 01 Nov 2010, 13:24

I need help with traces under trimpot......
and values of diodes?

is there chance to see schematic here?
I'll draw it , but my style is "blueprintish".........hand drawn :mrgreen:

so please help to make this cloned.....I would love to see demo too


cheers

Boris
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Re: DeArmond - Twister ( Model 1930 Phaser )

Postby SPeter » 01 Nov 2010, 13:51

CONGRATS, BRO, GREAT AS ALWAYS!
:applause:
:hug:
:thumbsup
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Re: DeArmond - Twister ( Model 1930 Phaser )

Postby borislavgajic » 01 Nov 2010, 14:14

SPeter wrote:CONGRATS, BRO, GREAT AS ALWAYS!
:applause:
:hug:
:thumbsup


you are so kind........

do you know pot values?
:thumbsup
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Re: DeArmond - Twister ( Model 1930 Phaser )

Postby fernieite » 01 Nov 2010, 21:40

As requested....
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Re: DeArmond - Twister ( Model 1930 Phaser )

Postby fernieite » 01 Nov 2010, 21:42

borislavgajic wrote:
SPeter wrote:CONGRATS, BRO, GREAT AS ALWAYS!
:applause:
:hug:
:thumbsup


you are so kind........

do you know pot values?
:thumbsup


I don't see any markings on the sides ( I didn't remove them from the box though) They're CTS pots with 1980 and 81? dates. Rate is shown first and then intensity.
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Re: DeArmond - Twister ( Model 1930 Phaser )

Postby Dirk_Hendrik » 01 Nov 2010, 22:13

Cool to see someone who knows how to handle his camera!
Sorry. Plain out of planes.

http://www.dirk-hendrik.com
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Re: DeArmond - Twister ( Model 1930 Phaser )

Postby roseblood11 » 02 Nov 2010, 01:44

Dirk_Hendrik wrote:Cool to see someone who knows how to handle his camera!


+1!!!

fernieite, can you get your hands on a Catalinbread Formula No. 5? :D :D :wink:
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Re: DeArmond - Twister ( Model 1930 Phaser )

Postby borislavgajic » 02 Nov 2010, 09:17

Dirk_Hendrik wrote:Cool to see someone who knows how to handle his camera!



very cool..... :hug: today I will complete PCB.........
I am not so good in drawing schematics,so I hope to get little help from my friends ? :wink:

p.s.

what about thumping? still there?......changed electrolythics?

cheers
Boris
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Re: DeArmond - Twister ( Model 1930 Phaser )

Postby analogguru » 02 Nov 2010, 10:29

borislavgajic wrote:if someone here could post finished schematic now please????
AG and Dirk ???

I would like to see one (ore more) picture(s) of the wiring first.
As you may have noted, my schematics always include the wiring too.
The pcb itself I have traced, but currently I am a bit confused, why the audio signal is fed to the LFO.

And yes, is the grren capacitor near the yellow wire really only 2n2 or is it maybe 22n ?

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Re: DeArmond - Twister ( Model 1930 Phaser )

Postby borislavgajic » 02 Nov 2010, 11:45

This is it ..... :block:

still missing values.... potentiometers for speed,trimpot,2n2/22n?

cheers

Boris
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Re: DeArmond - Twister ( Model 1930 Phaser )

Postby borislavgajic » 02 Nov 2010, 12:03

Is this helping?

boris
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Re: DeArmond - Twister ( Model 1930 Phaser )

Postby fernieite » 02 Nov 2010, 20:38

Here's some quick wiring shots. BTW, if the cap by the yellow wire is C3 - it's 222K. See my earlier post.
I'm not a DIY'er. I can wire pots and switches, but that's it. Maybe I could send it to one of you guys for fixing the thump? PM me, if you want to help me.
I've got an EH Bad Stone 1st version "mummy" that isn't working too. No sounds at all on that one. Thanks.
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