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TELEVISION TECHNICAL BULLETIN
MODELS 51CS03H 59CSD8H 51CS05H 66CS03H

Month of Issue: Classification:

CTV2000 06 07

June 2000 White Page 1 of 1

59CS03H 66CS05H

59CS05H 66CSD8H

SYMPTOM 1. Intermittent failure of one or both of the vertical supply line fuses (R631 and R632). 2. Frame rises up when warm until there is a large black band at the bottom of the screen. This can eventually lead to the 'rainbow effect' at the top of the screen. 3. Line tripping (same symptom when the Megatext IC goes faulty). 4. Slow to come out of standby. CAUSE Breakdown of Q707, causing variation of the main 5V supply rail to the vertical stage and Megatext IC. This problem can be checked by measuring the voltage at the emitter of Q707 during the fault condition. Note that Q707 can fail when C714 is replaced, so it is recommended that C714 is changed at the same time as Q707. REF NO Q707 C714 DESCRIPTION Transistor, BC338-40 Capacitor, 1000mF 10V 105°C PART NUMBER RH-TX0218BMZZ VCEAHA1AB108M PRICE CODE AB AD

ACTION

Sharp Electronics (UK) Limited
Reference JR20062000-1 Revision

White Carry out as required Yellow Carry out as required and whenever the unit comes in for service Red Carry out on all units