Yahama MR842 8 channel mixing console (live music) (Surrenden BN1)

Yahama MR842 8 channel mixing console. I believe this console is aimed at live music mixing (or band rehearsal recording).

The unit comes from an abandoned third-party studio project that I have no prior knowledge of.
However, I have run some basic testing. I've checked all eight XLR inputs and they work fine. On each channel I moved sliders and pots. Some are a little scratchy (need a spray) but mostly ok.

They are assignable to Groups 1-2 and 3-4 and all sliders work including the group sliders and master sliders. I attached the master outs via phono plugs and they work fine.

Not all of the meters are illuminating (see photo) - I guess they need new bulbs. Counting from the left, only meters 2 and 6 illuminate (see photos). The meters are swinging with input signals though.

I haven't tried every input and output and switch, but the basic core operation is verified.

A few marks and scratches but nothing major.

No manual but the PDF is available on-line.