Archive of the former Yahoo!Groups mailing list: MOTM

No, all the modules work fine, it must be a loose strand of wire in theMTA connector, it is wired correctly, it just shorts out when even youconnect it to a module. (it even shorts when you connect it to an MTA connectornot attached to anything, weird... -Nate

Paul Schreiber wrote:

Sure it wasn't a bad '800?

Check the wiring on the cable. I have seen 1 (out of ~1000) cablesthat had
the 2 outside wires 'crossed'. I now try to check for this as Ipack them
up.

Paul S.

----- Original Message -----
From: Nathan Alan Hunsicker <nate@...>
To: MOTM Newsgroup <motm@egroups.com>
Sent: Monday, May 08, 2000 7:03 PM
Subject: [motm] Thank God!!!
 

> I finished building my 410 today. After replacing that pesky TL074op
> amp I put in backwards, I was ready to power up the module andtest it.
> When I connected it to the power supply and turned it on, everything
> stopped working, the light on my LFO was showing a dim greenand was not
> oscillating. Of course I immediately turned the PS off and disconnected
> the 410, powered back up and everything works fine. Now I'm thinking
> something is shorted out so I take one last look at EVERYTHING,not one
> thing wrong (except for a resistor not facing the same way asthe
> others.) my next thought was does my PS have enough power torun all my
> modules? I only have a 300, 320, 110, 120, 420, 410 & three800's, it
> couldn't possibly be the PS, but just in case, I disconnect oneof the
> 800's and try again, SUCCESS!!! So now I'm thinking I need anotherPS as
> I prepare the module to put in my rack, I plug it back in, boltit to
> the rack rails, power up and WHAMMO, it happens again. I'm totallylost,
> just as a last resort I try switching the MTA cable to the onethat was
> powering the 800 and it works! For some reason, when the badMTA cable
> is not connected to a module, it is fine, but as soon as I connectit to
> a module (any module) it shorts out. I am so glad that it wasthe cable
> and not my module. NOW, what was the reason I typed all of thisyou ask?
> Just in case you build a module and can't figure out why it doesn't
> work, don't forget the obvious, test the power cable. -Nate
>
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