Roland Sp-300 Not Turning On

[netsol]

so, nothing lights on the large board above the one that is circled in the picture?
i will look in the morning, if i have a similar service manual at the office.
then i may have something more useful to say

 

[SheddShirts33]

I put the old power board in and I can still hear the faint buzz noise but its alot quiter and sounds less powerful(if that makes any sense)

When I unplug the power board and turn it on, I hear nothing...

Any suggestions on if it might need a new something? Really hoping I can get this fixed


Thanks again!

 

[SheddShirts33]

Sorry I did not see the previous message because it was on page 2 but correct nothing lights up anywhere on the back or the front

 

[damonCA21]

If you are sure you are not getting power to the board when you check the mains voltage then replace the mains input socket. It is possible this is making a bad connection. Swapping random things doesn't work, you need to be methodical and test from the mains input to the the output of the power supply at each stage.
Test the input to the power supply and if there is no mains AC there then work backwards,
To be honest, if you can't do basic voltage diagnosis then find someone who can and ask them to do it, it will save you a lot of time