11AK20 or 11AK36 Alba CTV3469
chassis depends on the year
11AK20S, 11AK36 Bush
1438SIL
11AK36 Alba
CTV3418BLK remote 1940
11AK36 Alba CTV3419SIL
remote 1940
11AK36 AMSTRAD 14TX
SILVER ST92R195C3B1/PAT
11AK36 Hitachi CP1426T
ST92195C3B1/05 24C08
11AK36 LIFETEC
LT3761VT ST92185B (ST92195B)
11AK36 Roadstar CTV1433XT/NS ST92195C3B1/OBF
/ VESTEL/T30E030 24C08W6
11AK36 SEG CT1402
ST92185B (ST92195B)
11AK36 Seg GRANADA S
ST92195CB1/0E0 / VESTELT3X210 24C08
11AK36 SEG
1402-A
11AK36 UNIVERSUM
FK8120
11AK36 VESTEL
ST92185B (ST92195B)
11AK36 VESTEL
5596HF ST92195C9131/0BA
11AK36 VESTEL
CTV3771M
11AK36 WATSON FA361,
FA3621, FA3628T ST92185B (ST92195B)
11AK36 Watson
FA3631T ST92195C3B1/OBF / VESTEL/T30E03 24C08W6
11AK36 WATSON
FA3621
11AK36 WATSON
FA3627T
11AK36 (non UK model) JVC
AV14BJ8EPS
11AK36 A6 BLACK DIAMOND
BDS1451LM
11AK36A15 Vestel Chassis
11AK36A15
11AK36A2 Alba
CTV3418BLK ST92195C3B1/OBC / VESTEL/T30A008 24C08
11AK36A5 Vestel Chassis
11AK36A5
11AK36-A6 Schneider STV1407T
ST92195C3B1/0E0 / WESTEL /T3X21Q / P22270323 ST24C08
<Symptom>
1. No picture after switching on due to the IC403 RGB
outputs are defected.
2. When the picture is only green due to 20. Pin of IC403
CVBS SW pin) is defected.
3. When Picture is vertically shifted
<Cause>
1. Spark on CRT
2. No good grounding on Tuner
3. Base and emitter of Q603 is short circuit.
<Countermeasures>
After changing the defected IC403, Applied the following
modifications to repair chassis and prevent reoccurence of defects
1. Modifty TP46I-3 CRT board by insertion BA159 diode
between 200V and RGB driver resistors as explain below.
Solder the anode of Diode BA159 (VE-30001318) to cathode of
D902; solder the cathode of Diode BA159 to Q909 collector (intersection
point with R913).
Solder the anode of Diode BA159 (VE-30001318) to cathode of
D903; solder the cathode of Diode BA159 to Q908 collector (intersection
point with R914).
Solder the anode of Diode BA159 (VE-30001318) to cathode of
D901; solder the cathode of Diode BA159 to Q907 collector (intersection
point with R915).
2. Connect a Diode zener 8.2V (VE-30001347) between the
Emitter of Q2 ( - point of C424) and – point of C485 in order to good
grounding on Tuner as explain below.
Solder cathode of Diode Zener to the Emitter of Q2 (- point
of C424), solder anode of Diode Zener to – point of C485.
3. Connect a Diode zener 8.2V (VE-30001347) between the
Collector of Q603 and ground for Vertical shift problem
Solder cathode of Diode Zener to the Collectorr of Q603,
solder anode of Diode Zener to Ground.
<Parts order>
VE-30001318: DIODE BA159 1A/800V 20A VE-30001347: DIODE
ZENER 8.2V
Objective
Please modify if following symptom occurs
<Symptom>
There is no picture on the TVs.
<Cause>
The spikes on the main supply are damaged to IC403 (Vertical
output IC).
<Countermeasures>
Apply that modification:
Remove D409 from the chassis,
D409: DIODE 1N4148 ==> Not Connected
<Spare Parts order>
VE-30001284: DIODE 1N4148
<Objective>
Please modify if following symptom occurs
<Symptom>
TV does not work due to Q602 broke down
<Cause>
Hor. Transistor Driving Condition during switching ON/OFF.
<Countermeasures>
After changing the defected Q602,
In order to improve Q602 resistant to sparks, modify the
chassis as given below.
Solder RES CF 1/4W 10K J BETWEEN BASE AND COLLECTOR OF Q601
(Hor.driver Transistor ) as shown in below.
<Spare Parts order>
RES CF 1/4W 10K J : VE-30000471
<Start Date of Modification on Production.> 16.08.2002
