Up until a few weeks ago i was happy as a pig in poo with my HQ100,then a mastercare engineer came out to do the safety recall and manged to break the on/off switch and have a screw left over!! Sony agreed to replace it,the replacemnet which turned up yesterday is really bad

The geometry is awful and the picture flickers(worse on white screens) I'm beginning to think it's time to give up.This is the story so far :-
(1) KV36FS76U-tube failed after 2 months.
(2) Replacement KV36FS76U had screen interference and washed out colours.
(3) THIRD KV36FS76U worked fine for 2 months-then switched itself off and flashed power LED 4 times.
(4) 36HQ100-worked fine but would switch SCART inputs by itself(Turned out to be normal-widescreen switching).
(4) Replacement 36HQ100-suffered from terrible screen purity-green tinge on RH side of screen and dirty whites on left hand side. Degauss made no difference.
(6) THIRD 36HQ100 worked fine until recall was done,following recall case was not refitted correctly and there was a screw left over(!) Power button also stopped working(button disappeared in side case).
What do i do? I really love this set(when it's set up correctly and works) the picture is fantastic. I've got a message to call Sony but this is getting silly now. I don't like the Toshiba which leaves the Panasonic PD50-i fear that may be a bad move though? I'm nearly 12 months on from when i first purchased a TV,the neighbours must think i'm mad! Plasma? i really don't know.........