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Repair tips

Make	Model	Problem	Solution	Date

Found: 5
Akita	CW1492	Int start up	R802/803 15k hi res	14-09-04
Samsung	CW30A75S	St/by only with LED flashing	R423 overheats - DZ302 33v zener & IC301 TDA8351	14-09-04

Samsung	CW593	St/by only with LED flashing orange & straining psu	C814 across D802 & HT supply s/c	14-09-04
Samsung	CW593CNG	Dead - blows LOPTr	If R821 next to opto coupler is 133k then ht should be 130 volts. if R821 is 150k then ht should be 155 volts. If still blowing line output transistor then the loptx is the probable cause.	14-09-04
Sharp	76DW18H CW100	blank screen, sound ok. 2 fuses F601 and F602 near LOPT o/c.	R611 1R 0.5W in +40V supply o/c, F601, F602 2.5A o/c (near LOPTx), SMD Q509 2SB1561 s/c D503 1N4148 s/c (near connector to frame coils) To prevent reocurrence, add 47V zener across +40v, fit in position R626 rear of PCB. In later models this zener is already fitted.	14-09-04

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