Hello;


...sorry being late to this post, (short intro..)
myself found a tr-707 on a yard sale long ago, paid 6
dollars for it and was told it wouldn't turn on. once
at home I replaced the power jack as Ed did. ( it had
a permanently soldered power lead from the wallwart to
the unit) then it didn't turn on at all... :(

later on the same evening and after a pair of cold
beers, I decided to give it a try- DVM on hand and my
oscilloscope on- Dissasembled the unit and I only
cleaned up the black rubber keypad contacts and the
pcb below them carefully with a cotton swab lightly
impregnated in isopropil alcohol ( hic !! ) suddently
the machine started beating my speakers really loud
after putting it back together...

turns out the cpu kind of got 'stuck' and was going
nowhere, I suspect some of the switches were 'shorted'
somehow and I 'dehosed' the cpu. In the end I was
really happy 'cause it did cost me less than $10.00
total and was very functional. I didn't use my
equipment at all that evening. I haven't had a
chance lately to use it simply because I have no idea
how (shame on me...) is just that I'm just a dumb
tech... not a musician yet... ( thanks to Dr Moog...
Rest In Peace).


I hope You don't have to scavenge your unit just
yet. sounds to me you might want to spend a few bucks
on swabs and iso-propil alcohol...


good luck with that !!!!


Mariano

--- Ed < enotide@... > wrote:

> > How doesn't it work Does it do anything When I
> got my first 707
> (off eBay) it had a hard-
> > wired wall wart which was a flaky job. A little
> tug on the cable
> reset the unit, which drove
> > me nuts. Did you replace the power connector yet
> You don't need to
> use a PCB mount
> > one, the chassis-mount types are way more durable,
> if you have room
> to install it. Should
> > be room just above where the original was.
>
>
> Yeah I replaced the connector with a 2.1mm PCB one,
> and it still
> won't turn on.
> When I got it the original power connect didn't have
> the little pole
> in the middle, so I figued replacing it would do the
> job.
>
> Where can I get a Chasis mount for it
> And does it have to be a specific kind or size
>
> That would be cool if I could revive it, I ended up
> buying another
> one and using the dead one for parts.
>
> Thanks for any Help,
>
> Eddie
>
>
>
>

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