Need help sourcing schematic/ parts for an Ibanez multi-effect

[Sody54]

Not sure if this should be posted here or in the digital forum, but I'm going to try here.
A friend of mine dropped off a mid-90's Ibanez PT5 multi-effects unit yesterday.  Apparently back in the day, he lost the wallwart for it and they tried to hook up one of those switchable voltage ones.  Well, it looks like they tried to run a whole lot more juice through it than the 14V it called for and melted the little transformer/ coil at the front of the power circuit.  Also blew a chunk out of the polarity protection diode right behind it.  Everything past there looks OK.  I'm assuming the 2200uf cap saved it. 

Anyway, I'm trying to source parts to fix this.  The diode just looks like a 40XX, but that trans/coil (really not sure what it is at this point) only has 10030 stamped on the side of it.
I posted to the Ibanez forum but it doesn't look like it gets a whole lot of traffic.   All 3 local dealers said they would have to send it in for service. (Go figure)
Anyone have any ideas?  Wouldn't mind fixing this to use in the studio.  Looks like a neat little unit.



Thanks
Brian

[Sody54]

OK, let's try this then.  Can anyone help me determine WHAT that transformer/ coil looking thing is?  That way I might be able to source it from somewhere.

Brian

[smallbearelec]

Anyone have any ideas?

For OEM Ibanez parts, try calling Hoshino USA 800-669-8262. I have sometimes succeeded in getting things from customer service there. If they won't help you, Partsisparts.net is also a possible resource.

Regards
SD

[George Giblet]

It's probably a common mode choke.   You would have to trace the circuit to confirm, the ckt would look like:

DC Jack -V  -> choke winding 1 ->  circuit ground
DC Jack +V -> choke winding 2 ->  circuit +V

The diode may well be a 1W 11V zener and the high DC voltage could have cause the zener to short the rails.   In that case it is likely the zener is blown, and there is no point in  replacing the coil until you fix that (otherwise it will fry the coil again).   If it's a 1N4xxx diode then the DC jack you used must have been reversed polarity?

The easy option is to just short the each winding of the choke.
If you can't find a source for the choke, the best option to
-  remove the choke
- *carefully* disassemble the choke; ferrite is very brittle.  If the core is glued, heat in oven to loosen glue, or use solvent.
- unwind the windings taking note of the number of turns, direction the windings go, and which terminal the winding starts on.
- buy some enameled copper wire of a similar gauge, rewind the choke
- re assemble and re-install.

[Sody54]

Thanks guys.  I've really never delved into anything like this.  Just build a few analog pedals, but i figured this may be worth trying to save.  I don't know if they replaced the DC jack or not.  I'll try and find out.  It was burnt when I recieved it.  I'll have to pull the diode and see if I can decipher enough markings on it to determine what it is.  If it is a 1W 1V zener that would be good as I have a couple in my stash.  There's actually a piece blown out of it. 

The choke does indeed route like you said George.  Thanks.  I'll have to see if I can either find a replacement or rewind it.

Thanks guys!
Brian