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Joined:
June 2013
Posts: 6
| Hi!
I am resurrecting an Ovation my wife bought me at a pawn shop 15 years ago... it was poorly repaired with bubblegum and dentene wrappers and now I am trying to get it working again.
It is a Ovation Magnum 2 Bass with the sliders. 1263 if I have it identified correctly.
I have verified I can get sound from the pickups by direct connecting them at the selector switch through my sansamp into my amp.
BUT, the 1/4" jack was broken off and the wires with it prior to me owning it, and when it finally came all the way off again, all the wires came with it. The repair had added a switch to turn off the batteries instead of using the 1/4" jack that normal passive basses use, and I have already found a guy to hook me up with one of the proper jacks... I have also found a new pick guard for it on E-Bay...
Now, I just need to find out where on the board I connect the positive signal to the jack, and the power switching for the op amps from the batteries. I see that originally 4 wires ran to the board from the jack and possibly both + and return are switched?
Yellow to the volume POT for audio out via 1/4" ?
Just wanting to touch base (Bass? ha ha) here before trying to true up the circuit. |
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Joined:
June 2013
Posts: 6
| Ok, the upload option did not pop in, so I put it on my own site... this is the best I have found to go off:
http://bassbastard.com/wp-content/uploads/2013/06/Magnum_electronic...
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Joined:
December 2003
Posts: 13996
Location: Upper Left USA |  Here
Edited by MWoody 2013-06-24 4:23 PM
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Joined:
December 2003
Posts: 13996
Location: Upper Left USA | Take a look at the inset in the lower Left. 
Edited by MWoody 2013-06-24 4:29 PM
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Joined:
December 2001
Posts: 7232
Location: The Great Pacific Northwest | MWoody... If you could get a close up on your photo showing where the wires attach I'm sure that would help. |
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Joined:
June 2013
Posts: 6
| Thank you MWoody, was not sure if I could post pics just yet... but I did zoom in and it appears that the Yellow wire goes to the middle of the POT on the top side and the + and Return both run to the jack. I assume that unplugging interrupts the power with something like a normally open switch built into the unit? |
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Joined:
June 2013
Posts: 6
| Looking at the second image, maybe come off the output leg of that last Opamp? |
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December 2006
Posts: 6995
Location: Jet City | BB, welcome. You have full member access to the site now. |
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Joined:
June 2013
Posts: 6
| Thank you!
I showed some of this to my tech and we are working through it!
Thanks guys! I will post pics of the Magnum when i am done with the restore.
Would it be sacrilege to just have a pickguard made with the appropriate openings for just an EMG or Bartolini preamp and set the old board aside? I have it working as a passive bass right now, but I want to drop in electronics eventually if I can not get the board working. |
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Joined:
December 2003
Posts: 13996
Location: Upper Left USA | Original is nice but making something broken play music again means never having to say your sorry! |
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Joined:
June 2013
Posts: 6
| MWoody, I agree completely!
With that said, after $22 at Radio Shack and some electronics/contact cleaner she is fully functional. The pickguard is still trashed with the ugly plexiglass repair.
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Need help and Saying Hi!
