saba: Saba Meersburg Automatic 9 sound is not clean

Hello everyone on the forum, I'm new to this environment I apologize if I write something wrong.
In my last purchase I acquired a Saba Meersburg automatic 9 after carrying out all the renovation of its broken box and changing the already exhausted capacitors and cleaning all the keys related to automatic tuning, changing damaged valves, I could see that its sound is not clean like the saba konstanz model automatic 8 I believe I'm in trouble, saba wouldn't deliver a Meersburg automatic 9 with an inferior sound.
if anyone has this experience to share or a tip about some test I'm happy.

To thank the Author because you find the post helpful or well done.

Does the radio sound badly on all bands and signal sources (pick-up input, AM, FM), or only on FM?

To thank the Author because you find the post helpful or well done.

hello thanks for the reply, AM presents a cleaner sound than FM but with much lower reception level. I'm electronics technician if I have to do Fi alignment I have the necessary tools, but I never did so I need help or tutorial.

To thank the Author because you find the post helpful or well done.