By peterkohlmetzmoller
Mon Apr 13, 2015 11:17 pm
Dear fellow Mpc60 users.
I recently acquired a used MPC60 (mk1) from Ebay. It was sold as is cheaply with a broken display (literally broken glass showing nothing, and backlight really dim).
Last week I got it home and took a look at it. As this was kind of a project to me, I also did some nice wood sides for it and cleaned the unit trough out. Anyway, as I turned it on, the state of the display was unreadable, almost no visual change when powered on, only a little bit of light from the backlight, but absolutely no text.
I found a used s3000XL and after reading these forums, and thought that I would be able to switch the display with that.
I tried, but failed; no change except a brighter screen, again, no text showing up. Important note; the unit turns on, buttons respond, floppy lights up and starts initializing (also if I press the record-button, it makes the little LED light up, so not a power issue or CPU issue as far as I'm concerned)
After this I was puzzled, and after some measurements I tried changing the resistors at r65 and r66 according to the service manual, and according to some history about the same issue with the resitor holding back on the contrast here at mpc-forums with the mk2 (r69 btw). Again, no result really, still only flickering display as I turn the contrast knop like before, and no visual text at all, only strange flinkering - display wokrs fine if I switch back to the s3000xl though. Backlight is fine though, no issue there, and the inverter from the s3000xl is quite compared to other one in the original mpc60.
So, 2 questions;
1) Where do you get a mpc60 displays these days - impossible??? Sequentex is not responding to my emails, seems like they dont want customers, so I am desperate!
2) In the case that I have overlooked something, are there any components to look out for? My inspection has been quite intense, and I have searched trough every forum on the internet. Every suggestion is welcome. I have taken out every ribbon cable and cleaned the unit through, so it's probably not there the issue is.
Thanks in advance for you answer! God bless mpc-forums.com!
All the best, Peter
I recently acquired a used MPC60 (mk1) from Ebay. It was sold as is cheaply with a broken display (literally broken glass showing nothing, and backlight really dim).
Last week I got it home and took a look at it. As this was kind of a project to me, I also did some nice wood sides for it and cleaned the unit trough out. Anyway, as I turned it on, the state of the display was unreadable, almost no visual change when powered on, only a little bit of light from the backlight, but absolutely no text.
I found a used s3000XL and after reading these forums, and thought that I would be able to switch the display with that.
I tried, but failed; no change except a brighter screen, again, no text showing up. Important note; the unit turns on, buttons respond, floppy lights up and starts initializing (also if I press the record-button, it makes the little LED light up, so not a power issue or CPU issue as far as I'm concerned)
After this I was puzzled, and after some measurements I tried changing the resistors at r65 and r66 according to the service manual, and according to some history about the same issue with the resitor holding back on the contrast here at mpc-forums with the mk2 (r69 btw). Again, no result really, still only flickering display as I turn the contrast knop like before, and no visual text at all, only strange flinkering - display wokrs fine if I switch back to the s3000xl though. Backlight is fine though, no issue there, and the inverter from the s3000xl is quite compared to other one in the original mpc60.
So, 2 questions;
1) Where do you get a mpc60 displays these days - impossible??? Sequentex is not responding to my emails, seems like they dont want customers, so I am desperate!
2) In the case that I have overlooked something, are there any components to look out for? My inspection has been quite intense, and I have searched trough every forum on the internet. Every suggestion is welcome. I have taken out every ribbon cable and cleaned the unit through, so it's probably not there the issue is.
Thanks in advance for you answer! God bless mpc-forums.com!
All the best, Peter






