Sharp DV-5150H (serv.man12) Service Manual / Technical Bulletin ▷ View online
Sharp Electronics (UK) Ltd Technical Support Group
Originator ________ Supervisor_________ Approval Date ___/___/___ UK42500X
Date :
21 December 1998
Model:
DV5131H
Ref No:
DV5131-002
Classification:
Immediate
TELEVISION TECHNICAL BULLETIN
Page 1 of 1
Subject : Protection of frame output IC
SYMPTOM Failure of IC501
CAUSE
Increased flyback voltage.
ACTION
When replacing IC501, carry out the following circuit improvement using the part numbers
given below.
given below.
1.
Remove jumper from D502 position and insert a 4.7V zener diode in its place.
Polarisation is as indicated on the screen printing.
Polarisation is as indicated on the screen printing.
2
Fit diode D503 as indicated on PWB.
REF NO
DESCRIPTION
PART NUMBER
PRICE CODE
D502
4.7V zener diode
RH-EX0478BMZZ
AB
D503
1N4004 diode
RH-DX0501BMZZ
AB
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