Roland Juno 2

[Helder]

Hello everybody.
If my question is not in the right place, or is not appropriate please let me know.
The question is, I have a Juno 2 and the display shows what is in the image below. Does anyone know what the problem might be? Thank you very much.

 

[happyrat1]

That's some sort of factory error code. You'd need a service manual to identify it.

Gary

 

[Helder]

That's some sort of factory error code. You'd need a service manual to identify it.

Gary

Thank you very much for your reply!
I have been searching on the service manual and there is not this kind of error.

 

[happyrat1]

Well it's definitely some sort of corrupted logic.

Use a logic probe to look for any broken pathways.

It's not a faulty display. The display would not be delivering ASCII characters if it was defective.

It could be the system ROM is suffering from Bit Rot.

In that case, reflashing it if possible might work.

Also, I don't know exactly what the case is with the Juno 2, but a lot of older keyboards relied on a coin cell battery to hold the entire operating system when powered down.

It should have given you a battery low warning before erasing though.

Gary