Hmm har googlat runt lite mer. Och hittat att detta.

If you do not receive HD at all transistors Q1 Q2 and Q3 needs replacing.
If you receiving channels HD when tuner get warm up you need to change capacitor C1. Here you can use mod from rev K as well it will not affect rev j in any shape it will work!!. Pictures are in forum pictures.

Forhike kanske kan kommentera detta? Måste man byta alla dessa eller räcker det med modden du gjorde som jag länkade till tidigare i denna tråd?