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Author Topic: [REQ] Boss CH-1A Super chorus schem  (Read 3393 times)

Zero the hero

[REQ] Boss CH-1A Super chorus schem
« on: December 05, 2005, 10:53:18 AM »
Hi, I'm not usual to this, but I need the schematic for this effect, cause I've bought on E-bay a logic board with a couple of component missing and some wires disconnected.
It's all SMD and seems quite digital (no BBDs).
THANKS IN ADVANCE!
Alex.
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Zero the hero

Re: [REQ] Boss CH-1A Super chorus schem
« Reply #1 on: December 06, 2005, 06:23:14 AM »
BUMP!
It seems there are no schematics out there, I just need a pic of the board... someone could open it for me?
THAAAAAAAAAAANKS!
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Steben

Re: [REQ] Boss CH-1A Super chorus schem
« Reply #2 on: December 06, 2005, 07:57:35 AM »
You could contact BOSS/roland themselves...
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Branimir

Re: [REQ] Boss CH-1A Super chorus schem
« Reply #3 on: December 06, 2005, 02:09:34 PM »
there is a schematic, at least i remember seening it!

i'll be home in couple of hours so i'll give it a try at finding, maybe ihave it on my hard drive too...

cheers!
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Umor

Built: Fuzz Face, Small Stone, Trem Lune, Fet Muff, Big Muff (green), Fuxx Face, Son of Screamer, Rat, Rebote 2.5, Opamp Big Muff, EA Tremolo, Easyvibe, Axis Face Si

Zero the hero

Re: [REQ] Boss CH-1A Super chorus schem
« Reply #4 on: December 06, 2005, 02:12:34 PM »
Thanks in advance!
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Branimir

Re: [REQ] Boss CH-1A Super chorus schem
« Reply #5 on: December 06, 2005, 02:13:45 PM »
i found this thread
http://www.diystompboxes.com/sboxforum/viewtopic.php?t=31668

maybe mr. hansen has the schem, at least he had it on his site, and mentioning it, as i can see from the link few replies later, but it's 404 now.. :(
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Umor

Built: Fuzz Face, Small Stone, Trem Lune, Fet Muff, Big Muff (green), Fuxx Face, Son of Screamer, Rat, Rebote 2.5, Opamp Big Muff, EA Tremolo, Easyvibe, Axis Face Si

Zero the hero

Re: [REQ] Boss CH-1A Super chorus schem
« Reply #6 on: December 06, 2005, 05:42:39 PM »
It seems that those mods refer to the BBD version of the pedal. I got that schem, I found it on GGG.
Unfortunately, I need the digital version of this box.
Thanks anyway!
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valvusmusicus

Re: [REQ] Boss CH-1A Super chorus schem
« Reply #7 on: May 12, 2012, 07:02:17 AM »
HI
Just wondered if anyone had this schematic to post as I have the same problem-same pedal-just a load of logic and a strange dsp like chip-Roland UK have no record of a schematic!!
Cheers All
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Electron Tornado

Re: [REQ] Boss CH-1A Super chorus schem
« Reply #8 on: May 12, 2012, 09:40:48 AM »
Are you referring to the CH-1(T)? It's the digital version of the CH-1 that uses the ES56028S (F5209133) chip.
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DiscoVlad

Re: [REQ] Boss CH-1A Super chorus schem
« Reply #9 on: May 12, 2012, 11:00:08 PM »
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valvusmusicus

Re: [REQ] Boss CH-1A Super chorus schem
« Reply #10 on: May 15, 2012, 03:47:32 PM »
OH JOY UNBOUNDED-I  :icon_biggrin: :icon_biggrin: :icon_biggrin: :icon_biggrin:CAN NOW FIX MINE!!! (possibly).!
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Phils

Re: [REQ] Boss CH-1A Super chorus schem
« Reply #11 on: May 01, 2020, 11:35:18 AM »
Hello,
I'm a new member so I discover here. I'll probably make mistakes.
I have a broken Boss CH-1A (Made in Taiwan, digital version).
No effect at all.
Just dry signal out of the A socket when used in mono.
Just Dry signal out of the B socket and nothing on the A when used in stereo.
Knobs do nothing.
I have read the topic about the CH1 but did't found help about the digital version (exept to find the scematics).

Question: Do you think you can help me to fix it?
Am I allowed to post the schematics?
I appologize for my basic english.

Thank you
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