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That's a nice clean Philips. Give it a chance, you may get used to the soft looking picture.
The KL9 chassis is just a local version of the European K35 chassis. It is a hot chassis design which is why the 02KR786 models have that great big isolation transformer in the bottom of the cabinet. It's needed to isolate the chassis so that external AV connections can be made. The KL9 was only fitted in 26" 110 degree CRT models.
The sister chassis, the KT3, was fitted to the 14" to 22" models as it was for a 90 degree CRT so was slightly more compact. The 2 chassis otherwise look very similar.
As for the reasons why hot chassis TV's were frowned on, it was due to the DC currents they generated in the power grid when half wave rectification was used. Several early colour models (Blaupunkt is one that I know of) had to issue modification kits to convert the early batches of TV's to full wave rectification.
There was never any ban as such since plenty of hot chassis TV's made it onto the market. Even the Philips chassis in the 02KR786 is a hot design and had been since 1980.
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