Alesis RA500 Service Manual

Discussion in 'User Manuals, Service Manuals and Schematics' started by Tenson, Nov 22, 2012.

  1. Tenson

    Tenson Moderator

    Nov 12, 2003
    Likes Received:
    Kent, UK
    Alesis RA500 Service Manual

    It seems the relay that switches the speaker connections on with start-up is a common fault with the RA150, RA300 and RA500. If the amp powers up but you don't hear a click, or one of the channels just doesn't work or sounds distorted but the fault is intermittent, this could be the cause. A simple check is to tap the relay with the end of a screwdriver and see if the fault changes at all.

    I've found a suitable replacement for the Dong Woo DW321-D12S relay is the 'Finder 44.62 - 10A 12V DPDT' relay.
    Tenson, Nov 22, 2012
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