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niblos
Copper Member
USA
5 Posts |
 Posted - 01/08/2009 : 04:34:15
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I am new to this site but a longtime lurker. Recently my beloved CE-2 pedal (MIJ) quit working on me after I loaned it to a friend. I dropped it by my gadget buddy along with the online print out schematic and we discovered it really isn't laid out true to the pedalboard. We were trying to trace the path signal but the schematic layout seems to be broken into sections rather than what's found on the board. I ordered two "new" chips (3101, 3007) but it may not even be the culprit. I wondered if anyone may happen to have a "real" layout version of the CE-2 board instead of the following:
http://www.mif.pg.gda.pl/homepages/tom/files/ce2.gif
I would really hate to junk it if it can be easily fixed. This is such a classic pedal.
Your help is great appreciated,
Robbie
Wilson, NC |
Edited by - Dr. Bob on 01/08/2009 10:06:43 |
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verivorax
Platinum Member
Canada
1185 Posts |
Posted - 01/08/2009 : 04:38:11
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| Hi niblos - welcome to the forum! I'm sure one of the techies will weigh in soon with a reply (and maybe move the thread to the tech section). I bet they can help you revive your CE-2! |
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DeFrag
Moderator
USA
3409 Posts |
Posted - 01/08/2009 : 05:39:51
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Welcome to Bossarea niblos! 
There's a few guys on the forum here that can handle your CE-2.
standby.. |
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Laurie
Double Platinum Member
Canada
4854 Posts |
Posted - 01/08/2009 : 06:27:55
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quote:
Originally posted by niblos
I am new to this site but a longtime lurker. Recently my beloved CE-2 pedal (MIJ) quit working on me after I loaned it to a friend. I dropped it by my gadget buddy along with the online print out schematic and we discovered it really isn't laid out true to the pedalboard. We were trying to trace the path signal but the schematic layout seems to be broken into sections rather than what's found on the board. I ordered two "new" chips (3101, 3007) but it may not even be the culprit. I wondered if anyone may happen to have a "real" layout version of the CE-2 board instead of the following:
http://www.mif.pg.gda.pl/homepages/tom/files/ce2.gif
I would really hate to junk it if it can be easily fixed. This is such a classic pedal.
Your help is great appreciated,
Robbie
Wilson, NC
Hi Niblos and welcome!
That schematic is the correct one and it does accurately represent the signal path and components on the board. There is a copy of the full service notes including component placement on the board here:
http://www.godiksennet.com/images/sch/CE2.jpg
If you could tell us a little about the symptoms, we might be able to point you in the right direction....
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Edited by - Laurie on 01/08/2009 06:37:50 |
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FRANZONI
Double Platinum Member
Ireland
3543 Posts |
Posted - 01/08/2009 : 09:02:00
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Welcome to the forum.... if Laurie and Dr Bob can't fix this sucker i don't know who can...... |
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bossarea
Forum Admin
United Kingdom
3652 Posts |
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 01/08/2009 : 15:59:50
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Hi niblos
Welcome to the forum from Australia.
quote:
Recently my beloved CE-2 pedal (MIJ) quit working on me after I loaned it to a friend.
It sounds like your friend used the wrong power supply on it, my best guess he applied reverse volts to the DC input socket.
And fried the protection Diode/zener.
D7 on the PCB.
What electronic skills do you have, or will your Tech friend be repairing it for you?
We need to know if D7 measures Short circuit or open circuit.
If it's fried, believe me short circuited is better, it protected the op-amps & other chips.
If you don't have access to a multimeter.
When you connect a battery for a few seconds, does it get hot, indicating that D7 is shorted.
Don't leave it connected for too long, as it's draining the battery into the possible shorted diode.
I have only seen one CE-2 that has had a faulty MN3007 BBD IC, & that was due to poor manufacturing.
I have never seen a faulty MN3101 BBD Clock Driver.
I guess when you get your CE-2 working again, you will be able to build a CE-2 clone, like the one on General Guitar gadgets.
The other possibility, is your friend damaged the input plastic socket, it is also the on-off switch for all Boss Compact pedals.
This can happen if he stood on the input plug while it was in the pedal, or maybe he slipped during a heavy footed stomp on the pedal.
I know that both Laurie & myself have replaced a lot of cracked & damaged input & output sockets.
Pls ask your friend, what might have happened to it, when it stopped working, It would help us a lot, if it's not D7.
Tell him you need to tell your Tech friends, to help them repair the pedal.
Failing that, ship it to Dr. Bob's used & loved pedal graveyard.
I have a few CE-2's, that would love some new CE-2 friends.... 
Good Luck
Hope this helped?
Keep us informed about your progress.
Regards Dr. Bob 
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Edited by - Dr. Bob on 01/08/2009 16:03:54 |
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niblos
Copper Member
USA
5 Posts |
Posted - 01/09/2009 : 06:33:14
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Man now that is what I can FAST SERVICE! Hello to everyone and a HUGH thanks to everyone for helping out. I really believe he must have used the wrong adapter and blew something. It'll probably be a week or so before I can stop by my tech to share this information but I'll keep you posted. I cannot thank you enough.
Take care,
Robbie |
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 02/15/2009 : 02:24:16
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quote:
Originally posted by niblos
Man now that is what I can FAST SERVICE! Hello to everyone and a HUGH thanks to everyone for helping out. I really believe he must have used the wrong adapter and blew something. It'll probably be a week or so before I can stop by my tech to share this information but I'll keep you posted. I cannot thank you enough.
Take care,
Robbie
I guess he just never came back, it would have been interesting to know if his Tech fixed it??? |
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Topic |
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Easier schematic for classic CE-2?
