John,
Enjoyed speaking with you this afternoon. It does sound like an electronics issue inside the housing. Sending the strobe and cord along with the housing should assure that you will have a properly operating system when we return it to you. We are sorry for any inconvenience.
Please send your equipment along with a brief letter of explanation or this thread, and full contact information to:
Ikelite Underwater Systems
Attn. Service Dept.
50 W. 33rd St.
Indpls., IN 46208
Please include your name, complete return address, email, phone number, and your stated problem or service request. Normal service completion time is 2-3 weeks, however we can return it sooner for your trip as discussed.
Regards,