Phantom Power Mod for MB-1/MP-1?

[BoWeevil2017]

Hello Midi Experts!
I am currently using a modified FCB1010 with a phantom power mod over 5-pin midi.
I know that the MB-1/MP-1 have a 7-pin midi connector mated to a 9v DC in jack.
My question is around the possibility of just "bridging" pins 6 and 7, which are carrying the power in the MB-1 scenario, to pins 1 and 3, which normally carry the power in the 5-pin scenario?
It seems fairly straightforward to me, unless I am missing something in regards to how pins 1 and 3 are being used in the MB-1 scenario?
Because in the 5-pin scenario, they are not used at all, and therefore can be used to apply the DC power.
Looking forward to any and all replies,

[MarshallJMP]

Normally these are not used so it should work but just in case take a look at it before you do this.

[MikeB]

I have been considering doing this for a while now and have been internally debating which way to go.
1.  Do the 5 pin phantom power mod and use an insert cable: http://www.dmvelectronics.com/store/pc/viewPrd.asp?idproduct=4&idcategory=
2. Put in a  seven pin midi socket when I  do the phantom power mod and take the power off the appropriate pin.
Haven't really made a decision yet, but am leaning towards option 2.

[Kim]

Some helpful Phantom Power info located in the manual of the Rolls MidiBuddy:

http://www.rolls.com/pdf/M_MP128.pdf

[BoWeevil2017]

The bridge worked as expected.
I can now pass 9v power over pins 4 and 5 to my FCB1010, without any cable or connector mods.

[rnolan]

Go Bo  :whoohoo!:

[MarshallJMP]

Good to know!!

[DannyjoeCarter]

Wow great thread! I remember this mod being done back in the late 80's and being very useful because of what a pain it was always having to have a separate power supply/wall wart to run power to the foot controller!

Thanks for sharing this!! :thumb-up: