Read Sharp 51DT-25H (serv.man12) Technical Bulletin online
CTV2000 08 01
Month of Issue: August 2000
Classification:
White
TELEVISION TECHNICAL BULLETIN
Page 1 of 1
Sharp Electronics (UK) Limited
Reference AVW25072000-1
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
MODELS
37DT25H
51DT25H
SYMPTOM No sound or picture. There is line drive to the base of Q601 (line output transistor).
CAUSE
D609 short circuit.
Note that even though there is a line drive signal to the base of Q601, it is not correct.
The positive excursion of the signal does not rise above zero volts to turn the
transistor on.
ACTION
Replace D609, using the part number given below.
REF NO
DESCRIPTION
PART NUMBER
PRICE CODE
D609
Diode, 1N4935
RH-DX0505BMZZ
AB
Display