VESTEL 11AK37 Service Bulletin
Service Bulletin
Model:
All models with AK37
Chassis.
SUBJECT :
IC 800 defect
Service
Bulletin No: 122
<Objective>
Please modify if following symptom occurs
<Symptom>
TV does not work due to IC800 broke down
<Cause>
Spikes on main power affects and disturbs to IC 800.
Priority
( )S. All product.
( )A. Items in Customer / Dealer stock / Service return
goods.
( )B. Customer stock / Units returned for Service.
( X)C. Sold items returned for Service.
( )D. Only Units returned to this bulletin.
( )E. Others
DATE : August 07, 2002
<Countermeasures>
After changing the defected IC800,
In order to improve IC 800 resistant to spikes, modify the chassis as given below.
Replace,
R801 RES CF 1/4W 1K J ==> RES CF 1/4W 4.7K J
C860 CAP CER 100NF 100V ==> CAP MKT 47NF 250V J .
<Spare Parts order>
R801: VE-30000718
C860: VE-30000107
<Start Date of Modification on Production.>
26.05.2002
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