Although we no longer sell this card, we can offer limited support depending on the nature of the problem.  Our minimum charge to evaluate and diagnose your card is US $ 250.00, plus shipping & handling.
Those wishing to upgrade their RTMC 48 to the later Kuper 2001 card, please contact us regarding price and trade in policy.
ENCODER ADAPTER TO CONVERT KUPER2001 CARDS TO RTMC48 ENCODER PINOUTS.

We have an adapter available that converts Kuper2001 encoder inputs to the old RTMC48 connector standard. Kuper2001 users will be able to use joystick devices designed for RTMC48 systems without any modification. The adapter requires one open slot on the back of the computer, and fits entirely inside the computer. Price is $50.00.
IMPORTANT NOTICE ABOUT RTMC48 CARDS!  UPDATE.

We recently posted a warning announcement that certain failure conditions on RTMC48 cards could lead to widespread damage.  More recent events have revealed that the suspected problem is the result of incorrectly made cables at one specific user location.  If you are among the very small number of users who have PGHI chips damaged by external wiring, we no longer recommend that you replace or remove the damaged chips. Please call us (Tel: 310-414-0717) Regarding how to proceed with this matter..

Download a .pdf describing the RTMC48 Classic connector pinouts