MPC 3000 All lights on always. Power Supply?

So I'm getting a 3000 from my buddy. When I boot it up, all lights are on. I think it's a supply issue. If so, how do I fix this? Any picture diagrams you could put up would be greatly appreciated. Thank you in advance and Happy New Year! P.S...I searched the forum but I couldn't find anything.

All the LEDs are on? Do you have anything on the screen?

Yes they are all on and the led screen works fine. Thanks...

He is asking if there is any text visible on the screen.

Also, the screen backlight is most probably electro-luminescent (EL), not LED.

So I guess it's (EL) then. Thanks for letting me know that and yes there is text. If not, I would not have even thought about it. In regards to a loose connection inside, I'll check when I get it tomorrow. A forum member here pm'd me and said he had a similar problem so we are going to try to troubleshoot it tomorrow. Thanks everyone

Would be more useful to discuss it in the thread, rather than by PM, so that the information is available to other users in the future.

Please report back with the results.

I will definitely report back here with three pics. The first with the lights on, second with the top off and the third with a detailed report of the issue and how it was fixed. I posted a pic up here before through photobucket but I was recently having issues with posting pics here. If anyone wants to pm me an easier way to do this, I would appreciate it. Thanks....

Had the same similar problem. Check the fuses and if it is replace it with the same exact one that is installed in the machine.

eno deggur wrote:Had the same similar problem. Check the fuses and if it is replace it with the same exact one that is installed in the machine.

Fuse values from page 21 of MPC3000 Schematic Diagrams and PC Boards manual, on the MPC3000 Power & Filter Schematic Diagram.

The letter code(s) (C,A / J / E,V,B,S), which indicate the primary destination(s) of the MPC3000, can be found on a stick on label above the AC power inlet/switch/supply on the rear/back edge of the faceplate.

C,A (Canada/U.S.A)
F1 1A 125V
F2 4A 125V
F3 800mA 125V
F4 800mA 125V

J (Japan)
F1 1A 250V
F2 4A 250V
F3 800mA 250V
F4 800mA 250V

E,V,B,S (Europe-except U.K/Germany/U.K/Australia)
F1 T1A 250V
F2 T3.15A 250V
F3 T630mA 250V
F4 T630mA 250V
* T=Time-Delay (slow blow)

The fuses is the first thing I checked which were fine. It ended up being a loose ribbon cable. I'm gonna do my best to upload some pics in a bit. Thank you.

So I took some very detailed pics and uploaded them to photobucket from my phone. The app for droid works fine but the site appears to be down on my comp and has been for days. Apparently, many people are having these problems right now. I really wish there was a more convenient way to upload pics to this forum. I really want to get these pics up.....

I'll give it a try. Thank you...

All these lights were on when I plugged it in.

If you look to the right of the arrow red arrow, the black ribbon cable was kinda loose which I didn't notice at first glance.

If you look to the right of the yellow arrow, this is the same cable fully pushed down and in which fixed the problem.

And this is my beautiful MPC 3000 about as clean as it gets!! Thank all you guys very much for everything and to the forum member that helped me through this here in Chicago that really knows his stuff, C-Quence! P.S..... I feel like some kinda wizard posting pics like this on a forum