MPC1000 dropouts

Hi all, this is my first post here on the forum. I got a secondhand mpc1000 about a month back. Really like working with it. I traded it for my Maschine. Mainly to get me away from the computer more. Already know the mpc pretty solid, read the manual and some tutorials online and loving it.

I'm not really shure when it started but sometimes the mp just drops dead (power off), then tries to reboot en drops dead again. I'm trying to find out what is causing this. I hope some of you can help me out.
First i thought it was because it has been on too long (2-3 hours) and it's a little hot. But I don't think it's too hot. I opened the mp to check if all the wires were connected ok. Everything seems fine.

Then I realised this morning that i forgot to reset the mp when i updated to the JJOS 2XL from the free JJOS. Hoping this was causing the dropouts. So I did a power off/on + Taptempo to get back to the Free JJOS and another power off/on + Erase to reset. Then Power off/on to get back to the JJOS2XL.
I thought i fixed it for a while, but the dropouts are still here.

Also I'm using two CFcards from Kingston (cheap ones). A 4Gb in the cardreader and a 16Gb in the HD to CF converter HDM10. Maybe this is causing problems?

I tried to find out in what menu the dropouts acure. It seems to be in Gridedit and Savemenu mostly.

I also tried different powercords, but that's not helping. The previous owner says he never had a issue with the dropouts. So I'm thinking maybe it's the new JJOS 2xl.

Specs:
MPC 1000
JJOS 2XL (upgraded from the free JJOS 3.13)
Flashcard Kingston 4 GB
Flashcard in HD converter HDM10 16 GB
New fat pads

Does anyone know what to do? I'm hoping to get this fixed. It's not really a problem when I'm working in the studio, but if want to use it live, I'll need a reliable mp.

Thanks,

Greeting from The Netherlands.

Oh, one more thing. The Main button is acting weird. I have to press it very hard to make it work. I opened the mp, but the plastic around the button isn't broken and everything seems ok. Is there a workaround to get to the mainpage? Or how can i fix this?

"Dropout" usually refers to a dissappearing audio signal, such as from a failing volume pot or similar bad connections in the audio signal chain. What you are describing is not "dropout" but a complete system power failure and reboot.

The most likely cause of this is an internal short. This is known to happen with the 1k when the internals have been jarred loose. There is a paticular screw connection in there that has caused people a lot of problems due to being too close to other metal components. You can use the search to find more specific threads on this, but generally it's best to just go in there and retighten everything. You might also place some insulating material over anything that looks suspect.

Your switch probably needs cleaning with deoxit or similar. You have to press harder to get past the corrosion, but be careful doing that as you are putting a lot more wear on some very cheap and flimsy switches. If you can't clean it immediately, try pressing the button with normal pressure but at a different angle. This can work but it depends on how corroded it really is.

Hi elektrik_muz, thanks for your reply. Yeah I didn't know what to call it. It seems like a shortcut in the circuit.

I read the thread about the right top screw on the padpart being to tight. I opened up my mp again just now. Checked if all screws where ok, and i loosend the top right screw, which felt tighter then the others.

Also I used WD40 to clean the main button. I works now, so that's great.

The mp has only been on for 10 minutes now, so i can't tell you if the shorts still occur. So fingers crossed and I'll let you all know if they come back.

@Emptysea: I know the mpc is computer. But that doesn't mean it suppose to crash (almost) every session. And I'm not going back to Maschine. If this one dies on me I'll buy another mpc, no doubt.

Thanks

rebooting can be caused by broken RAM. take your RAM out and see if it helps. maybe you just need to reseat it (could have become loose during shipment).

i would NOT recommend spraying wd40 on electronics. wd40 is being used in automotive shops for instance.

get deoxit d5 and call it a day! otherwise get a new tact switch (soldering required).

Hey ****, thanks I'll try it now. I'll leave my mp on this day, so I can check if he also reboots without the RAM.

And for the WD40, i've only used a tiny bit, on a qtip. And it worked, so that cool.

Bathmutz wrote:Specs:
MPC 1000
JJOS 2XL (upgraded from the free JJOS 3.13)
Flashcard Kingston 4 GB
Flashcard in HD converter HDM10 16 GB
New fat pads

Does anyone know what to do? I'm hoping to get this fixed. It's not really a problem when I'm working in the studio, but if want to use it live, I'll need a reliable mp.

Thanks,

Greeting from The Netherlands.

i am moving this to the JJ OS forum

I think I found the solution!

Yesterday I tried it without the RAM, worked fine, no power faillures, all day. So I was thinking, I'll buy new RAM and everything should work fine.

Today I put the (same old) Ram back (tight). Tested it all day and everything seems to work fine!

So, it's not an JJOS problem or something. So maybe this needs to be moved back, I don't know.

Thanks all for your help. If it comes back again I'll post it here.

By the way there's a memory check mode if you keep pressing PLAY at start-up.

Bathmutz wrote:I think I found the solution!


So, it's not an JJOS problem or something. So maybe this needs to be moved back, I don't know.

i am going to leave it here. any future problems that you may have dealing with the OS or something, should be placed here. if it's a general mpc1000 statement/comment or concern can be placed in the other 1000 forum.

Hi all,

I still have the same problem with the dropouts/power-faillures. I'm hoping someone can help me here. The previous owner says he never had any problems with the mpc and i trust that he didn't.

I tried different things:
- I took out the HD with the CFcard coverter.
- I took out the (4gig) CF card
- I took out the RAM
Problem is still there. So i think it's a OS/install problem.

When i got the mpc i soon switched to jjos2xl. But i did that without pressing the Erase button first.

It says on the JJOS site:

When you change OS, please switch on a power supply, pressing the ERASE button first.
Please press the ERASE button until a main screen is displayed.
If this operation is not performed, MPC may freeze or it may crash.

Unfortunately i overlooked that note.

I tried switching back to the free JJOS 3.13 then, power off, press Erase button and power on again but nothing happens. No sign of reset.

So, is there a way to reset? What can i do? Or is there a way to contact the people who make the JJOS?

Thanks

I just send a question on the jjos site. Hope i'll get an answer. If i do i'll post it here for other people having troubles.

this is not a jjos issue. jjos cannot power off a machine. your issue is hardware related. does it go off when you are not touching it, or only when you are touching it?

something is making contact inside the machine and shortening it out... as mentioned... this is hardware, not the OS... you're gonna need to open it up and look inside... get some compressed air and clean it while looking for any loose connections inside. maybe the previous owner spilled a beer on it... you won't know unless you open it up. it's easy to open too... you just need a phillips screwdriver... there are even videos online on how to open it.

does it ever make a loud pitched noise right before powering off? do you have a CF card inside when it happens? i'm wondering if it might also just be a bent pin inside the card reader...

I just reinstalled the free jjos, then updated to the 2xl again.

@Nym, i goes off with and without touching it. Sometimes when i'm working on it, sometimes when it's on and i'm doing something else.

Also not only when one specific window is opened. It happens in load, save, program, gridedit, mainpage, where ever.

I'm hoping the reinstall of the jjos has fixed this. Otherwise it must be a hardware problem like you said.