If you have a dead/dying factory tuner, odds are good that replacing the RF module will cure it.
The original modules don't exist anymore, so the PCATS RF module is the only way.

Here is Patrick's original posting about his excess PCATS RF Modules.

Figure in the cost of the RF module, plus.. say.. $50 for the refit labour,
and two-way postage, and there ya go.

Still cheaper by half compared with a full replacement tuner.

Cheers