DIYstompboxes.com

DIY Stompboxes => Building your own stompbox => Topic started by: Fuzz on April 23, 2005, 11:46:06 AM

Title: Vintage OD1 status led problem: please HELP!!!
Post by: Fuzz on April 23, 2005, 11:46:06 AM
Hi everyone!

I've got a little problem with this old guy! The effect works perfectly (though it is very old and has many scratches on his box surface), but the led job is a bit curious. It is ALWAYS OFF but the moment I switch the effect on; just a second of light, then nothing. Coluld someone help me? Thank you!

Fuzz
Title: Vintage OD1 status led problem: please HELP!!!
Post by: ibanezts808 on April 23, 2005, 12:05:20 PM
i'm just a n00b here, but maybe your led is shot? it sounds like it is able to send enough juice around the circuit and as soon as it hits that led it's got nowhere to go.  just my 2 cents though.
Title: Vintage OD1 status led problem: please HELP!!!
Post by: MartyMart on April 23, 2005, 12:45:56 PM
AHA !
That one is VERY old, thats how they used to be wired..... its a "momentary" LED, it just tells you when you switch it and doesn't stay on
!!!!!
I used to have one the same  :D

You could "mod" it but I wouldn't bother
When its on ..... ITS  LOUD   :twisted:

PS: I think they stopped doing that after 1978 ... !!!
Marty.
Title: Vintage OD1 status led problem: please HELP!!!
Post by: ibanezts808 on April 23, 2005, 12:49:46 PM
lmao, I think I'll just stop answering questions now, lol.  but at least the correct answer surfaced.
Title: Vintage OD1 status led problem: please HELP!!!
Post by: MartyMart on April 23, 2005, 12:53:59 PM
Quote from: ibanezts808lmao, I think I'll just stop answering questions now, lol.  but at least the correct answer surfaced.


NO don't stop !!
I've answered so many posts badly, you could write a book !!

Marty. :lol:
Title: Vintage OD1 status led problem: please HELP!!!
Post by: ibanezts808 on April 23, 2005, 01:07:59 PM
Quote from: MartyMart
Quote from: ibanezts808lmao, I think I'll just stop answering questions now, lol.  but at least the correct answer surfaced.


NO don't stop !!
I've answered so many posts badly, you could write a book !!

Marty. :lol:

lol, that's good to hear.  I'm still new to this whole thing so I figured if I'm gonna badger all of you gurus for help, I might as well try to spread the little knowledge I do have and maybe alleviate a little of your guys' load.
Title: Vintage OD1 status led problem: please HELP!!!
Post by: MartyMart on April 23, 2005, 01:26:17 PM
"GURU" ------ "I" ,  am most definately NOT !!! :oops:

There are some very clever guys/gals here, I just happened to know
that "simple" answer !!  :D  :D  :D

Cheers,
Marty.
Title: Re: Vintage OD1 status led problem: please HELP!!!
Post by: Melanhead on April 23, 2005, 11:19:22 PM
Quote from: FuzzHi everyone!

I've got a little problem with this old guy! The effect works perfectly (though it is very old and has many scratches on his box surface), but the led job is a bit curious. It is ALWAYS OFF but the moment I switch the effect on; just a second of light, then nothing. Coluld someone help me? Thank you!

Fuzz

Yup ... familiar with this as well ... I changed mine to make the light stay on when I did some other mods to it. The mod for the LED latching on is in the service manual. I have it but don't have access to a scanner ... You need to see the diagram, as well as read the intruction, because there are no component values on the board :)

Someone may have it scanned though ...
Title: Vintage OD1 status led problem: please HELP!!!
Post by: Fuzz on April 24, 2005, 04:09:53 AM
Thank you everybody guys (and Ibanez' too :wink: )!

So it's supposed to be normal...yes, I've heard something like that. My only complaint is that this unit is not mine; I'm only checkin' it for a friend of mine that has bought it on ebay. So I'm gonna suggest to leave the pedal as it is...but, in case he wanted the "modern" led job, someone of you could help me with that?

Thank you again!
Fuzz
Title: Vintage OD1 status led problem: please HELP!!!
Post by: phillip on April 24, 2005, 02:18:00 PM
Go to this site:

http://www.godiksennet.com/default.asp?main=Schematics

Then scroll down to "Boss OD-1 - Overdrive p.2".  That's the part of the OD-1 service manual that shows how to modify the LED driver circuit so that the LED latches on.  It's in the "Modification on LED Drive Circuit" section half-way down the page.

The service manual is for the version of the OD-1 that has a single 4558 IC...not the earlier (I think) version that had two 4558s.

Hope this helps!
Phillip
Title: Vintage OD1 status led problem: please HELP!!!
Post by: Fuzz on April 26, 2005, 05:27:47 AM
Quote from: phillipGo to this site:

http://www.godiksennet.com/default.asp?main=Schematics

Then scroll down to "Boss OD-1 - Overdrive p.2".  That's the part of the OD-1 service manual that shows how to modify the LED driver circuit so that the LED latches on.  It's in the "Modification on LED Drive Circuit" section half-way down the page.

The service manual is for the version of the OD-1 that has a single 4558 IC...not the earlier (I think) version that had two 4558s.

Hope this helps!
Phillip

GREAT Phillip!!!  :D  :D  :D
It's definetly what I was searching for!  :D
How to thank you?  :oops:

Bye!