Read Sharp 51AT-15H (serv.man13) Technical Bulletin online
CTV2000 08 03
Month of Issue: August 2000
Classification:
White
TELEVISION TECHNICAL BULLETIN
Page 1 of 1
Sharp Electronics (UK) Limited
Reference AVW25072000-3
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
MODELS
51AT15H
SYMPTOM Too much red or colour bleeding in the OSD and teletext displays.
CAUSE
IC801.
This can be checked by examining the R, G, and B outputs on IC801 - pins 17, 18,
and 19 respectively. If one is higher than the others in the OSD mode, then the IC is
probably faulty.
Note that the OSD and teletext signals are generated by the microprocessor (IC1001)
and fed into IC801 for switching between OSD/RGB input and the decoded video
signal.
ACTION
Replace IC801 using the part number given below.
REF NO
DESCRIPTION
PART NUMBER
PRICE CODE
IC801
IC, MC44007
RH-IX1573BMZZ
BA
Display