Hi -- After a power outage last week, the power supply for our MXP has lost its +18 and -18 rails, in addition to the 24v rail which had died previously. I've...
Hi -- After a power outage last week, the power supply for our MXP has lost its +18 and -18 rails, in addition to the 24v rail which had died previously. I've...
... Are you saying that it's lost ALL 3 rails this time? How about the 48V? If I'm not mistaken, there is a fuse on the input side of the transformer that...
The 48v seems to be fine, but the 24v and both 18s are down. We've tried unplugging it from the board, but it exhibits the same symptoms. The fuses seem to be...
Matt, Everything Jeff said is correct. About heat sink compound, it is mandatory! You have a continuous 10 Amps through one Darlington transistor. It will...
Thanks for the help -- it's greatly appreciated. The fuse holders look OK, but I'll ohm them out tomorrow. (By the way, the 48v supply has never failed, so...
... That's good, you can pretty much assume that everything on the primary side of the transformer is ok. ... First, you should get all the power supply rails...
Jeff, That is exactly the way to go! Except this sounds like a short in the console and not on a module. The modules all have fuseable resistors on them....
Hi Tom & Jeff, You guys really seem to know your stuff. I'd like to ask your advice. I've had my MXP 3000 for about 4 years now. I NEVER turn it off. Unless...
Steve Goldberger
steve@...
Mar 28, 2008 9:23 pm
585
Steve, The inrush current on a cold bulb blows it. It was already past its prime. I would turn the console OFF on the days when you don't use it. All...
When my console was at the studio that originally owned it, it was on 24/7 for almost 10 years. Our major problems over that time were a couple of failures of...
Thanks Tom and Jeff for the quick response. I guess I'll be turning it off on when there's nothing going on. It makes total sense. You're right. What's a...
Steve Goldberger
steve@...
Mar 29, 2008 3:59 am
588
... Enlist the aid of a friend (or a couple of 2x4s, or a friend with a couple of 2x4s!). If your rack is sturdy, the supply will hang happily from the front...
Jeff, Did you work with Dan Johnson in Minn? Or Westinghouse in the North east? Both sound like the console you worked with. There are several versions of...
Steve, Try 2X4's on edge. Tom graefe@... ... From: Steve Goldberger To: sony-mxp-3k@yahoogroups.com Sent: Friday, March 28, 2008 10:58 PM Subject: Re:...
Remember this is a 1KW transformer. HEAT!! Best of luck on your problems. Later Tom graefe@... ... From: Steve Goldberger To: sony-mxp-3k@yahoogroups.com...
... Honestly I don't remember the names of the guys we used (they were stationed at Sony Pro Service in Teaneck, NJ). Once or twice we had someone up from the...
Thanks guys for the advice. I was thinking 2 x 4 supports underneath would do the trick. My rack is wood and I'm not sure if the tracks would support the...
Steve Goldberger
steve@...
Mar 29, 2008 3:20 pm
594
Hi guys, I don't have any schematics for our console and was wondering if any of you have any in PDF or some type of emailable format. It seems something's...
Jeff, I remember the sale of your console and the one from Toronto was probably from Cherry Beach Studio's. Kim Mitchel did his debut CD on that console. Henry...
Larry, All the lamps and switching are done from the +24V as you assumed. Do you need a specific schematic? I can help with that. I will talk to my friend Cary...
... I found him to be very nice, extremely knowledgeable, and was quite grateful for his openness in sharing his knowledge. I learned a lot that day, I hope I...
It sure sounds like you still don't have the +24v hooked up correctly. There's not really any central "control part" that would cause the individual channel...
Hi Jeff, I’ve measured all rails at the terminal strips at the rear of the console with everything connected and powered up. All voltages seem ok, but there...
Hi Larry, MCI was a local company in Ft. Lauderdale where I live. It was bought by Sony in 1982. MCI had 70% market share in the recording studio Biz in the...
Also surprised and concerned that the supply indicator LEDs are out, something strange is going on. Underneath channel one, on the bottom of the console...
... There was a channel removal tool that came with the console (saw one on ebay once!), that is much as you describe. Basically a T-shaped handle with a rod...
Jeff, I am still in Ft. Lauderdale. Your analysis of where to look is correct. There is also a ground plate that is the central Ground for the console's star...
I don't use them as they scratch the paint on the inside of the pull holes. Great idea that did not quite work. Tom ... Tom Graefe wrote: > > Pull out a blank...
Tom & Jeff, Thanks for the input and quick history of Sony / MCI. I did have the belly pan off on the Ch 1 side when trying to figure out where the power ...
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