Announcement

Collapse
No announcement yet.

Roland F140R piano won't start up

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Nyqusit5
    replied
    Thank you VERY much Dmeek.
    There's a lot to check for me tomorrow, so I can't say if it will be enough yet.
    Anyway, again, a big thank you!

    Leave a comment:


  • dmeek
    replied
    They must have got a cease and desist letter from Roland, Several years ago all the Roland files disappeared. Fortunately I snagged it but unfortunately it's too large to post here - 19M

    Maybe these are enough?

    Click image for larger version

Name:	f140r power switch.png
Views:	4
Size:	42.3 KB
ID:	931451 Click image for larger version

Name:	f140r cpu power.png
Views:	3
Size:	309.6 KB
ID:	931452 Click image for larger version

Name:	f140r power input.png
Views:	3
Size:	470.4 KB
ID:	931453

    Leave a comment:


  • nosaj
    replied
    Ok it is missing now but send your email as for some reason I can't upload it here. you can PM.
    nosaj

    Leave a comment:


  • Nyqusit5
    replied
    That would be just awesome...
    But I just cannot find it whatever the key words used for the search and the link does not work... I don't think it is on Elektrotanya unless you can point it to me?

    Leave a comment:


  • Jazz P Bass
    replied
    Nice!

    Leave a comment:


  • dmeek
    replied
    The service manual was uploaded to Elektrotanya today.

    https://elektrotanya.com/digital_pia.../download.html

    Leave a comment:


  • Pixel
    replied
    Originally posted by Enzo View Post
    Did you directly contact Roland to ask if they could provide or sell the service manual?
    Try contacting them through a few social media channels...companies pay way too much attention to social media and you might get lucky.

    Leave a comment:


  • Nyqusit5
    replied
    Still looking for the schematic.
    The power distribution and start-up part would be enough!

    Leave a comment:


  • Nyqusit5
    replied
    Yes, but they won't...

    Leave a comment:


  • Enzo
    replied
    Did you directly contact Roland to ask if they could provide or sell the service manual?

    Leave a comment:


  • Nyqusit5
    replied
    Still looking for this schematic... At least, the power distribution and start-up part....!

    Leave a comment:


  • Nyqusit5
    replied
    Yes, that's a good point. I already had a look around and couldn't find one that was even close. The F140R is fairly recent and I couldn't find a digital piano or synth that used the same type of circuit and that had an accessible service manual (the F701 seems to be a candidate for exemple).

    Leave a comment:


  • Jazz P Bass
    replied
    Maybe there is a circuit that is something close that they have used in a previous model.
    https://www.synthxl.com/manufacturers/roland/

    Leave a comment:


  • Nyqusit5
    replied
    Still looking for the schematic of this electronic piano...

    Leave a comment:


  • Nyqusit5
    replied
    This is not your traditional keyboard/digital piano with one in and simple multiple output potentials.

    The 12V goes from the "in/out power board" to the digital board and back to the "in/out power board" where it is regulated to 5V if the mains switch is depressed (it works here). The 5V then goes back to the digital board (it does here).
    It seems one brach of the power supply is missign because even the power contact switch doesn't light up red when power is connected AND before it is depressed. But the digital board is so densely populated and the smd part of the "in/out power board" is so complex that it cannot be traced.

    This is the reason why a schematic is sorely needed...

    Leave a comment:

Working...
X