Make sure you have the processor off when you pull cards and insert them. Do you work on computers and junk? Just use the same common sense you would for computers. After all, the CP-500 is just a highly specialized computer! (It's a stretch but the analogy fits.)

You can proceed in a few different ways:

1) You can just start at the left of the unit and swap out one card at a time until you find the one with the problem. (ie: The problem moves to the other house.)

Before you start swapping cards randomly, get the manual and think about the problem for a few minutes. You say that everything works fine with SR. This rules out several potential problems: the amp, the speakers, the wiring between the processor/amps/speakers, the optical preamp cards, the matrix card, the output card, and the crossover card (if you're using it). Thus, there's no need to swap out any of these cards (all of which have [at least on the CP-50, -55, and -65] adjustments which are specific to the projector and auditorium).

This pretty much leaves the digital cards as the ones worthy of swapping. I'm not sure if these have projector- or auditorium-specific adjustments or not, but I kind of doubt it. Try swapping them one at a time and see if the problem moves to the other house and is fixed in the first one. When you find the bad card, have it repaired or replaced.

It's not wise to just start swapping cards randomly. The more thought you can put into it before you start the better. That's the reason I suggested getting the manual out. Its troubleshooting section covers a bunch of stuff like that. Use that to develop a plan of attack first.

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First, the "digital cards" have signal presence LEDs on them...in particular the one labled "EQ"....are the left and right channels there? If so, I would rule out the rest of the digital cards and look squarely at the main module. Believe it or not, this little bugger can cause all kinds of trouble.

The Output card takes it's instructions from the main module on what channels to turn on and how to mix them. I have had a main module mix all channels together and spit them out of all channels!!! It is very possible that it isn't telling the output card to turn on left and right while in format 10. That would be the first module I swapped out...BTW I would unplug the units before changing out modules since some are still live even in bypass .

The main module stores all the EQ and level settings so it will not be correct for the theatre you put it in but it will tell you if there is a problem....try running a digital loop.

Steve

I am sorry to say that your behavior on these forums has been unacceptable over the last few days. I have received 3 complaints of the way you have treated other forum members in the last couple of days and with your posts this morning regarding the CP500 and most specifically the way you are speaking toward Mr. Norwood (who is highly respected by the way), I don't believe anyone here will miss you.

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