Page 1
CTV991104
Month of Issue: November 1999
Classification: White
TELEVISION TECHNICAL BULLETIN Page 1 of 2
MODELS
DV5932H DV5935H DV5937H DV6635H
SYMPTOM In some instances it is possible for C619 and associated line scanning coil earth return
components to fail. This may result in a hole bing burnt in the PWB.
CAUSE Failure of L603 and C619.
ACTION If a problem is experianced in this area, take the following remedial action.
1) Remove R619, R632 and C619 from the PWB.
2) Clean the PWB in the area of the above components (remove any carbonised
material as necessary).
3) Fit PWB (DUNTK7297BMZZ) in the place of R619, R632 and C619 as show in the
diagram on below. Note that this PWB comes with a nut and bolt so that it can be
mounted on the vertical output IC heat sink.
4) Replace L600, L602, L603 and L604.
5) Reflow all solder joints on the scanning coil PWB.
REF NO DESCRIPTION PART NUMBER PRICE CODE
- PWB DUNTK7297BMZZ AL
L600 Coil RCILP0105CEZZ AG
L602 Delay Line RCILZ0599CEZZ AG
L603 Peaking Coil RCILP0088CEZZ AG
L604 Coil RCILP0104CEZZ AG
Location of PWB
Sharp Electronics (UK) Limited
Reference PGJ121199-1
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
Page 2
CTV991104
Month of Issue: November 1999
Classification: White
TELEVISION TECHNICAL BULLETIN Page 2 of 2
Component Locations on Mother PWB
Green
PWB - DUNTK7297BMZZ
C619
0.56uF 250V
R619
39R (1/2W)
R632
39R (1/2W)
Safety
Blue
L600
L602
C619
0.56uF 250V
C607
R618
1K (1/2W)
C620
220pF 500V
R619
39R (1/2W)
R632
39R (1/2W)
Safety
Yellow
L603
Connection of PWB – Note that C619, R619 and R632 must be removed from the Mother PWB
before connecting PWB DUNTK7297BMZZ
Sharp Electronics (UK) Limited
Reference PGJ121199-1
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
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