Pre-amp pins were recently removed to add more hardware and now there is no sound when on.The hardware that was inserted into the pre-amp in-puts(red and white) was the Spin It Again program that converts analog to digital from records and cassettes to computer files for conversion to cd's
Audio Players & Recorders - Harman Kardon - HK 3380 Receiver
Answers & Comments
It would NOT make sense to connect that Spin It product to the preamp inputs or outputs as this would kill the signal to the amps.
Connect the preamp outputs BACK to the Main inputs as original.
The Spin It thing would probably connect to the tapeTape Out connectors and audio would be routed there to use the Spin It.
I did this and realized I reconnected the pins incorrectly. They connect from the main to the pre-amp. white-to-white, red-to-red.