Hi Riccardo. I have had a TS-530 since they day they hit the streets. What issues do you have?
If you are just looking for info, parts, etc, K4EAA (Ken) has a great site for Kenwood Hybrids at K4EAA.com. Both service and user manuals are located on the web. Google is your friend. And I belong to a couple of Kenwood user groups on Yahoo. One is Kenwood TS-520_820_530_830. There are several more on there that deal with Kenwood as well as other Hybrid radios of that era. There is a whole plethora of knowledge contained on those user boards. If you have something specific to address Fred has a lot of experience restoring these radios and putting them back into service. I have fixed my fair share of these units, too. I have always preferred these hybrid radios over many of the newer rigs. But, I play with both. By far the hybrids are a whole lot easier to work on and have a successful restoration.
At any rate, welcome to the Island. Pull up a coconut and make yourself at home.