Alesis sr-18 record and tempo lights on, no display, no buttons work

SOURCE: need foot switch for this machine.

What you need is 2 unlatched switches 1 for the stop start function and one for the drum fill function.
I bought mine from my local music shop for £15 ea

SOURCE: cannot transfer beats from alesis sr16 to alesis

The sync signal that is sent on the MIDI cable is actually a "clock" of something like 96 ticks per measure. This is the "MIDI sync clock". This is a single byte FF hex.

The beats themselves are not sent. The firing of the individual percussions should be.

SOURCE: the tempo indicated on the alesis sr16 is inaccurate

how can i change the tempo on song compose, for example step 01 tempo 60 and step 02 tempo 120??
Thanks.

SOURCE: how do i dump midi user patterns from alesis sr 16

you may well have to go via a third unit, a computer or laptop to store the data then send it back to the other machine.

SOURCE: I am not getting any

Many people have had this problem WHEN they substitued a replacement power adapter.

The CORRECT adapter MUST supply 9 volts AC, NOT DC at 830 ma or more.

The AC is converted inside the SR-16 to both + and - power to run the internal circuits. IF you have connected a 9 v DC adapter, it will NOT have damaged anything, just get the CORRECT adapter and all will be well.