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Repair tips

Make	Model	Problem	Solution	Date

Found: 9
Hitachi	C28WD2TN	Dead - previously int shut down	LOPTr had a pin hole in it & was arcing to heatsink in use	14-09-04
Hitachi	C28WD2TN	dotted vertical contours of pic features	C875 22µ 250v dry jointed	14-09-04

Hitachi	C28WD2TN	Dull red raster only	Check R807/8/9 560r cathode feed resistors - if burnt out s/c crt is suspect	14-09-04
Hitachi	C28WD2TN	Goes off aft 5 mins	check sleep timer isn't set & dry joints on 5v regs - if HT is high(above 150v) check R950 & HT pot VR950 (under plastic frame)	14-09-04
Hitachi	C28WD2TN	Int start up then shuts down 2 secs aft start up with greenish pic	R809 560R ?w burnt out, Q814 BF422 leaky	14-09-04
Hitachi	C28WD2TN	Sound int	dry joints on the component side of the PCB adjacent to the sound output chip.	14-09-04
Hitachi	C28WD2TN	St/by only	R914 1k, Q901 T636073, Q902 T636072, ZD902 BZV85C18V, ZD903 BZV85C27V	14-09-04
Hitachi	C28WD2TN	Switches on then immediately powers down	TDA8350Q and re-solder 5v reg's IC951/952	14-09-04
Hitachi	C28WD2TN	Very faint raster only could be seen with lights off	Pic appeared with A1 advanced but no R - crt internal fault	14-09-04

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