Broken Meridian Processor Options

[jgrade]

I have a Meridian Audio setup that is fairly old, but for the most part in excelent condition with the exception of the 568 surround processor. Most modes except direct and 2ch will function for a few seconds and then cut out. I like Meridian, but can't see spending thousands to upgrade or repair

My question is how can I keep the substantial investment in speakers, DSP5000 x4, DSP5000C and M2500 Sub? The sub is easy since it is not digital, but the speakers are pure digital. Is there a less expensive option for upgradeing the processor/video switcher while keeping the digital speakers?

Thanks in advance for the help.