DSR-PD170 Problems...RCA outs not working...HELP?

I'm REALLY hoping I am stupidly overlooking something, and this is an easy fix.

I work for a church, and we tape our services using 2 DSR-PD170's. We run with RCA outs to an Edirol V4 then to a Mac Pro.

A couple weeks ago, one camera stopped sending an RCA signal. Tried it with S video and firewire out, both work fine. We started using tape on that camera for the time being.

This week, the OTHER camera has also stopped sending an RCA signal.

I first thought this was going to require repair, but how can both cameras have the same problem at the same time?

There is a Spanish church that also uses our building, as well as our cameras, and they are not very tech savvy, so I'm wondering if they accidentally changed a setting on the cameras, but I've never had to select an option for the RCA outs.

Can anyone help me with this? I'm leaving for Italy for 2 weeks, and would definitely like to resolve the problem before I leave so I don't leave the church with a pain to take care of.

Thanks!

-Chris

Thanks, I appreciate the help.

I have tried the cameras out directly to our monitors with the RCA. Still dead. I have also tried a Canon out with the switcher using the Canon's RCA's and it works fine. It's definitely the cameras.

I might do the S-video with RCA adapters thing for a bit until I get back from vacation and I can send these in to get worked on.

-Chris