Sharp 28LF-94H (serv.man6) Service Manual / Technical Bulletin ▷ View online
CTV 2005 01 03
Date of Issue: 12
th
January 2005
Classification:
White
TELEVISION TECHNICAL BULLETIN
Page 1 of 1
Sharp Electronics (UK) Limited
Reference - JR 12 01 2005 - 1
Revision - 1
White – Carry out as required
Yellow – Carry out as required and whenever the unit comes in for service
Red – Carry out on all units
MODEL
28LF94H
SYMPTOM Various symptoms:
•
Erratic operation
•
Failure of power supply components
•
Does not turn on
REASON
Collector of Q804 (standby control transistor) not soldered.
ACTION
Re-flow the solder on Q804 and repair power supply as necessary.
Re-flow the solder on Q804.
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