jjos 2xl bug? cursor down back to main screen. does this hap

when i push the cursor down button on my mpc 2500 running jjos 2xl v 2.22, it seems like someitmes it will randomly exit me out of the screen that i am at and go to the main window.

so far i have had it happen in the trim section and in the load section.

its pretty frustrating because whenever it happened in the trim section i was almost done chopping my sample then i would get put back to the main screen, and when i returned to trim mode all of my progress would be lost and i would have to re-start my chops.

it seems like this is only happening when i push the button every 100 or so times.

have any of you experienced this?

maybe i should try re-loading my os?

bump

i havent had this happen to me again, it might have just been a glitch when i turned my machine on once that time.

it hasnt seemed to happen again with 2 days of using it.

anyone had glitches happen like that before? then when you reboot they go away?

sounds more like a hardware problem than an os problem. some of your tact switches inside the mpc might be a little dirty or going bad. search around the main mpc1000 forum for info on how best to clean them.

Sooty_G wrote:sounds more like a hardware problem than an os problem. some of your tact switches inside the mpc might be a little dirty or going bad. search around the main mpc1000 forum for info on how best to clean them.

cool will do, although, do you think a dirty tack switch for the cursor down button would effect something like that? from what i know the tact switches are pretty far away from each other arent they? i know most of them are on the 1k at least.

thanks for the reply

damien907 wrote:bump

i havent had this happen to me again, it might have just been a glitch when i turned my machine on once that time.

it hasnt seemed to happen again with 2 days of using it.

anyone had glitches happen like that before? then when you reboot they go away?

I've seen slight glitches similar, as one I've addressed in another topic. In my opinion, it may not be a hardware problem. However these are strange glitches that happen to occur only once. So I'm not quite sure what to make of it in all honesty. However, we should all take note of these small glitches, share and compare what we see if they happen to return with the next updates or not. For now, I'm considering a "Small One-time Glitch topic" where we can compile a list and observe any changes in behavior and such, as to get deeper into finding the cause.

This may sound a bit odd, but I would also suggest mentioning in the list what year your MPC was manufactured, as I'm curious if any Revisions in hardware specs have anything to do with it. I have an old blue & red 1000 that was manufactured in July 2004, according to the serial number on the unit. This isn't something for JJ to be concerned with (nor Akai for that matter). But if we're able to list these details in the topic I suggest making, maybe we can make some more sense out of whether the production date suggests any differences in our findings.

It may sound useless to some (if not most). But I'm an electronics tech, and I've grown more curious as to any changes in PC Board Revisions, and whatever else there is to keep note of in order to draw a better conclusion, or even rule out whether my suggestion is even worth considering looking further into. We all may have mixed results or we may not. But I see no harm in taking all matters into consideration. The more we know, the closer we are to scientifically going through the process of elimination to see if we can make any more sense of this before taking our observations to JJ or Tutor if they have been curious as to the issues. I mention Tutor specifically as well, since he is the author of many tutorials, where he may need to consider these issues for trouble-shooting and workarounds, in order to make things clearer if needed.

I'm still on my first cup of coffee. But I also should emphasize the importance of NOT contacting JJ or Tutor directly, as both of them should not be disturbed by emails and PMs, as they are both diligently working to make improvements as needed (as well as being very aware that they both read this forum to find out more info as needed).

Nym, if you are reading this, let me know, as I'm aware of you having 2 MPC1000s which I know you've taken apart several times and may be able to provide some of your own info.

As for everyone else here, there's no need to take apart your MPC to look for hardware revisions (if they exist or not). I can not assume any responsibility for any damages that may occur if trying to look further into the specs. So my suggestion is to go with the date code from the serial number on the bottom of your machine, if you feel the need to. I'd much rather deal with keeping the process as safe and trouble-free as possible.

yeah i just saw this
i don't have these types of issues on the 1ks, though i remember hearing something about them on the 25s years back
don't know if this is/could be an issue with jjos so much as with the 25 itself
one thing i have noticed is that pushing multiple buttons/pads at 1 time trigger a different button. i've seen this happen to qlink 1 or 2 (led turns on and everything) but i don't know if the mpc interprets that as an actuation of the button.

be mindful and sure that you're only pressing 1 button at a time and see the results
then get sloppy and fast and hit multiple buttons at a time and see what happens.

distortedtekno wrote:I've seen slight glitches similar, as one I've addressed in another topic.

Me too. A few times, in Trim and Save screens, I guess, maybe with Cursor down button. It's hard to remember exactly, because these glitches always happen when I'm intensely editing samples, so my main concern is in rescuing my work, and not in monitoring exactly what buttons I'm pressing at the exact moment the glitch happens.

distortedtekno wrote:This may sound a bit odd, but I would also suggest mentioning in the list what year your MPC was manufactured

This may sound a bit stupid, but how can I tell?

yeah i was wondering how i can tell what year my mpc was built by looking at the serial number as well. is it written somewhere within it?

i like your idea about compiling a thread of one time glitches, it would also be nice if we could have it as a sticky somewhere.

my mpc 500 would also have a one time glitch sometimes. the same thing happened to me maybe 1 or 2 times when i owned it and it never seemed to harm anything. when i would turn it on, it would make an almost white noise kinda sound until i turned it back off and on again then everything worked fine. but i dont have this anymore; although i still know who has it and could get them to look at the serial number for it probably.

I'm taking a guess here. But I believe the date code is the first 4 numbers in the serial #. I'll look more into that to see if I'm right or wrong. Though I believe I read a topic in the MPC1000 forum a few years ago, which stated what I think is correct.

I'm out of work all week with a leg injury, so I have more time to spend researching all I can, including whether the serial # contains the date code.

For now, take a look at the first 4 numbers. That should be the month, followed by the year.
My serial # is (21)0704206005.
I'm not quite sure what the first 2 numbers in parenthesis means. But The following numbers 0704 would suggest to me that the unit was built in July 2004, hence 07 for the month and 04 for the year.

While I'm about to search the forums and elsewhere to confirm this info, if any of you have your MPC in front of you and know that it was bought new in a specific timeframe, you may be able to make some more sense out of this by posting the first 4 numbers here in this topic and compare our findings.

I bought mine (first black type with the old pads) in 2006 and my serial number starts with (21)KT0603...etc

What about newer black 1K?

distortedtekno wrote:For now, take a look at the first 4 numbers. That should be the month, followed by the year.
My serial # is (21)0704206005.
I'm not quite sure what the first 2 numbers in parenthesis means. But The following numbers 0704 would suggest to me that the unit was built in July 2004, hence 07 for the month and 04 for the year.

Here's what I have: blue 1000, old, serial number (21)0704402***, so same date as yours, if the theory is correct.
Funny thing, there are two stickers on the bottom plate, the other says MPC2000XL-SP-BL(!)

2500, 4-5 years old, (21)K10708021910***. Quite different...