Hi,
If you send them in, they will be recycled. We are re-using the tda’s and copy the values of the resistors.
Then it is just a drop / plug and play.
To be 100% sure it would be great to send in the mech as well, so we can make sure the head is ok.
While waiting for that tax money you can enjoy this video: Fixing My Philips DCC Recorder for Good! - YouTube
A nice video from somebody that had 2 defective units and multiple failing attempts to fix them with the original board. But finally found this new replacement board and received support from the DCC museum.