SDE-3000 Repair

[Lightguy48]

I'm trying to repair an old SDE-3000 delay, there is a resistor that has burned up near the front panel that feeds the front display.

By chance does anyone in the group have a SDE-3000 they might be willing to open theirs up and get me the color code for the resistor or even better a service manual for the unit?

 

[Anonymous067]

I tried to get the manual...

Well...I tried going through roland's website...but they make you make an account which I simply don't have time for...

Otherwise you could google it, some other website may be hosting it.

 

[Lightguy48]

Thanks but I'm curious all I saw on the Roland site was an operator's manual which I already have, did they have the Service Manual too? (Schematics/troubleshooting)

 

[FMEng]

Resistors seldom burn up by themselves. Chances are that some other component is bad and causing excess current through the resistor.

 

[Lightguy48]

True in most cases, but I've spent a lot of years working on electronic equipment and this does not appear to be failure due to another compoent.

This just appears to be a resistor operating too close to it's maximum rating inside a space with poor airflow not allowing proper heat dissipation.