OS2XL, I have Ghost trigging in PROG mode, anybody else ?

punkydoodle wrote:The Problem exists only in PROG mode.

one thing, in the past, having a pad looping but not knowing which one was set to loop,
i could press play and then stop, and any running pad/sample was stopped.
Since this problem occours pressing start/stop isn´t helping.
even changing to REcord window isn´t helping, nor changing to AUDIOedit Window .
when i change to another PROG then the playing sample is stopped.

i have two 1Ks

What happens if you load this particular program in the mpc that is working well?

If the same problem occurs it could be a software bug.

le rat wrote:What happens if you load this particular program in the mpc that is working well?

sorry, a bit delayed:
the Program works fine on the other MPC.

so i remembered, when the problems occoured the first time,
i have had sometimes at that day also a black line in the display.
also the ghost trigging is not only in PRG mode.
i even have now ghost triggering in audio edit mode.

definitly not a software problem , its the hardware
I´ve had no time respectivly the desire to open both MPCs and to swap the RAM to check if the RAM is the cause.
Thats definitly the next step to do.

While it looks as something is dying, a Friends opinion is that it might be only a/some contacts somewhere.

.......i´ll see, i post here if i have news.
thanks "le rat" for the help !

ill bet you anything its overheating. mine does it too. i added a small heatsink (that came from a junk video card... you need thermally conductive adhesive. you can get it at any computer store) to my CPU and will soon add some vents, a laptop fan and a SSD to minimize current draw and heatsoak. i figure if i pressurize the interior with cool air, the hot air will find its way out. the chassis is full of stamped holes and airspace. most heat will end up escaping through the button holes. i may put some vent holes by the CPU or somehow by the power supply. havent figured that one out yet. i consider it a challenge and it can only add to the lifespan of the unit. plus its neet to think i will have retrofitted a fan into my mpc!

when mine gets hot it triggers many pads all by its self. i have heard that the higher temperature makes chips act up. i believe they didnt design it with the intention of it lasting very long. they didnt make any provision for cooling.





the only real space to put it is over the hard drive bay. ill need to cut a hole in the bottom center.





front intake side exit is good for tight clearance.



the only thing i need to be careful of is hot air recirculation. if i make small vents on the top it will make the air escape that way because its the path of least resistance. because im pumping cool air in the bottom and hot air is exiting out the top, they wont mix. hopefully.

Ha, thats interesting news.
mine has btw. no harddrive. the adapter card bailed out.....

the last time i had my 1k on, it was only for very short, and it immediately failed,
so my problem might have been caused by overheating, but now its nomore just overheating i´d say.

i will check now from time to time and test.
actually i´m not so much into making music. occupied with other things right now

thanks !

in case of exchanging the RAM,
i just found this one, quite cheap
http://www.ebay.ch/itm/128MB-Memory-for ... 2a0b59b7cc

is the MPC sensitiv to which sort of RAM it gets ?
it would be worth the money for me for that RAM to check if the RAM is makeing the problems,
IF you guys say me: go for it


much easier to take just the broke unit apart than both,
should i go for that RAM ?

ok, i localised the problem down to:
its allways pad 12 which has the ghost triggs.

in PROG mode and audio edit mode, .....not worked in main mode, guess would be the same.
I have the old akai sensors/pads.
it can´t be any external sequenzer
so where to go from here ?

could it be a contact problem ?...something servicable
or do i have to replace the sensors and pads ? ( expensive though while not shure if it is a 100% bet )

Hi punkydoodle,

If you suspect pad12 to malfunction what you can do is :

-remove pad 12 completely and use the MPC in this state to be sure that it's really pad12 that is half-dead and the problem doesn't appear with another pad.

-swap pad12 with another pad and check if something changes.

I suggest doing that before spending money in costly parts. (a single pad is not expensive though)

I hope you'll see the end of the tunnel one day. As mentioned above problems due to past or present overheating can't be excluded either.

thank you "le rat" !

yes, i am now under the impression that overheating was a factor here how i got the problem in.
right now, and the last 2 times overheating within the session could not have been the problem,
as ghost trigging started immediately after powering the MPC on.

i have btw. sometimes something like 1-2 triggs per second !....sometimes its even ratching
sometimes its only every half or full minute or even less.



not shure, possibly my MPC is just sensitive for cell phone calls of my neighbours
ok, i have a look on the pads.
deassembling that MPC is ok, its anyway nearly unusable now for editing chops.
(the other unit has btw. the new pads, so i can´t swap here anything)

punkydoodle wrote:(the other unit has btw. the new pads, so i can´t swap here anything)

He is saying to swap the faulty pad 12 with another pad in the same MPC, or remove it, to see if the problem follows the pad.

ahh i see. I´m absolutely not familiar with the pad technology on the MPC.
thanks to clear that up.
have not had the time yet. .....
Great advice here ! thats what i hoped for

The blue MPC1000s, and the early black MPC1000s, had individual/separate pads, each pad had it's own individual sensor, so you can remove/swap individual pads.

Later black units had the standard MPC 4x4 pads joined together in one single sheet, and the same with the sensor, if you have this, you can not remove/swap individual pads.

i got a set of original pads 80 shipped

the ghost triggering isnt because pads tho

hey 313 where you tap the power from for the fan mod? That was good mod, with heat sink and all

2 arrows show where the black and red lead are connected. its a hack job but wont be a problem unless i mess with it. the first prong on the power connector is 5v where you should connect the red lead, and the chassis is ground. you can use the PCB screw to tighten the black lead in there.

ONLY use a 12v fan. otherwise youll have a jet powered mpc. nobody wants that. a 12v fan will run 1/2 speed on the 5v buss and therefore will be quiet. get a fan with many blades too. also it needs to be low profile. theres not much room in there.

that heatsink really works, i have opened up my unit after its been on all day and the heatsink is warm to the touch. it will be a lot more effective when i put a vent by the CPU so the pressurized air will escape creating more air flow over the heatsink.

it really has been a good performing mod so far. my mpc doesnt act up anymore. and i cant hear it really.

You didnt think to drop a toggle switch in then? spose means drilling a hole in the case for a switch for the fan. yeah that makes sense what you did, though I have not torn down mine to that level so wanted to know where you tap the voltage.