Roland Answered Questions & Fixed Issues

Do you have an owner's manual......first thing to try would be a factory reset...sometimes this will un-scramble the operating system and set it back to when it left the factory....contact Roland for an owner's manual if you don't have one....hopefully this helps..if not, then you will have to open it up.....

Ch?o b?n, v?n ?? n?y c? kh? ??n gi?n, ??c bi?t ? Piano ?i?n hay c? tr?ng th?i n?y, b?n c? th? ghi l?i c?c ph?m b? m?t ?m thanh, sau ?? m? ?ai ?c ra, b?n d??i ??n c? n?t cao su b?n ch? c?n b?o v? c?i n?t ?? l? ???c. https://guitardongtam.com/

If I connect an external source like a phone or such, the speakers play fine. png free

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Roland Juno gi program error problem

First you need to make sure that the keyboard is programmed to accept the DP-10 as factory default and then that the DP-10 is working perfectly. There is a case where the DP-10 action switch is activated directly, in this case the sustain does not stop and you need to change the micro switch of the DP-10 pedal. It has already happened to me and I replace it by adapting another micro because Roland does not support you and wants you to buy another DP-10.

no solution from me but if you want to sell your MV 30 I would love to buy as I have one with a working screen but a non-working floppy drive

Ebay will put you in contact with a seller.

Chec out pinterest or utube......tons of knowledge. Or visit ur library sec600

we have no idea since have never had one

I would expect there is bad soldering or a circuit board crack. Inspect the soldering aound the leads, especially pots and heavy components. Finding all the retaining screws can be frustrating. Expect the screws for the handle to also attach to the amp chasis. They are often hiodden under plastic caps.

Have the electrolytic capacitors replaced.That may cure it.

Request the schematic diagrams from Boss.

Most likely the device has been incorrectly powered. The most easy way to check this is the following:- unscrew the 4 screws on the RC-3 bottom - slide the board out from the connectors holes- gently detach all the connectors and wires coming to the board- locate the schottky diode (SS14) close to the power input connector- check if the diode is short- replace the diode if it is- if this does not solve the problem probably also the capacitors in the power section are shorted.Message me for further info

What is PT? You will probably have to reinstal the programme is windows based or use a full backup from when it worked OK.

Have you tried the pedal straight into the amp without going thru the Roland?

Does the sustain pedal turn on with the foot pedal or is it a separte stomp switch to turn it on?

I know nothing about music, and I don't play piano, but I have played with these when they first came out. I was manager of a public hall and a shop brought a load of them for demonstration. It sounds like an Effects setting and I know that is one called 'Leslie', which if I remember correctly is the effect of a speaker spinning in a speaker enclosure.Here is your manualhttp://www.synthmanuals.com/manuals/roland/kr-3500/owners_manual/kr-3500_om.pdfService Manual and a link to Roland, to ask them direct.Roland KR-3500 Service Manual, Analog Alley Manualswww.analogalley.com > osccart > product_infoProduct: Roland Digital Intelligent Piano, model KR-3500. Service Manual , First Edition. Contains/Contents: specifications location of controlsSupport - Manual Archive - Rolandwww.roland.com > support > manual_archiveHP-3500S Owner's Manual · HP-3800 Owner's ... KR-1070 Owner's Manual · KR-117 Owner's ... KR-4500 Owner's Manual · KR-4700 Owner's Manual · KR-4700 ...Roland USA5100 S. Eastern Ave.Los Angeles, CA90040USPhone: 323-890-3700Fax: 323-721-4875

The first step would be to re-initialize the unit. Here's a link to the process- BOSS Support Knowledge Base GT 10 Factory Reset Initialization

There are no batteries! Only AC power.

I think the jack cable is not good try to buy a new one and see if it makes the same noise