Need repair for older Bogen receiver

Question

I cant find anyone that still carries or repairs Bogen audio receivers.
I live just outside of Houston,Texas 77546. I know that I could no doubt buy a new receiver for the cost of fixing this one but this model is special.
No other receiver sounds as good through my Optimus 45 speakers.
It has a short that cuts the left audio channel in/out. I've traced the short to a "bank" of buttons that includes the "auxillary" button. That button is where the short is. The buttons are all on one piece of hardware I will call a bank. I cant find Bogen parts anywhere and I'm fairly certain that this was a propriatory part that came straight from Bogen. Can you help me restore this awesome machine or find a repairman in my area who is familiar with Bogen? Thanks for reading.