Hi, I'm Pete. Welcome to JustAnswer! I'm reviewing your question now, and will post back with your reply ASAP.
I haven't heard back from you yet - please reply and let me know if you still need assistance with this.
I have been looking into this for you - as it is quite an old unit, parts are hard to find and in any case it would be beyond economical repair so a new unit would be advised.
Happy New Year,