Righ channel in Yamaha EmX 860st not working

[Jquijano]

Ive got a yamaha emx 860st purchased brand new 20 years ago and right channel either A or B not working. Is it really worth spending time and money fixing this PA?

[DrGonz78]

Yes because it has a nice heavy linear transformer in it. You have a working channel to compare it to. It might be something simple or you might have to source Sanken transistors. I vote yes.

[Jquijano]

Any of the newer yamaha models worth purchasing as an upgrade to this one?