These are a badged Sharp and were sold in Australia as a Philips KA910 or a KA920. I still have a functional KA920 and repaired many of these models back in the good times.
The main problem with them is the start up capacitors around the horizontal oscillator circuit. The power supply is quite robust and rarely fails. The flyback transformer was prone to failure and is NLA.
I have a service manual somewhere but it is unlikely I could lay my hands on it any time soon.
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