I recently bought one at a good price. It had operational sound board but was intermittent. Determined loose connectivity at the male/female tether between engine and tender. Went so far as to replace the ten pin board and regained all continuity between 12 pin main board and ten pin board in tender…..but still do not have sound. Trying to connect with local repair service to see what next step is. It is getting a little over my head now. Thanks.
Dave G