Practical Guide To Chasis Intervideo Repair
Practical Guide To Chasis Intervideo Repair
Practical Guide To Chasis Intervideo Repair
Standard (15kHz)
In case you are facing difficulties, our technicians suggest the following procedures:
Standard (15kHz)
Horizontal Deflexion (Fig.2)
Defect:
• No high tension, check that the power supply to the following diodes D12 = 149 Vcc;
D13 = 24 Vcc; D14 = 12 Vcc is correct (Fig.1); in the opposite case, please check the
following:
1. Transistor Q3 = BU508 AFI.
2. Transformer T5 = EHT.
3. Dry the joints in the EHT area, on the Integrated Circuit IC5 = TDA 2595 (TDA
2593).
4. Integrated Circuit IC2 = LM7812-L2012CV-UA7812.
5. Resistor R18 = 100 Ω 2 W.
Synchronism (Fig.3)
Defect:
• Synchronism does not work, check:
1. Switch 1 (if badly positioned o defective).
2. Adjustments board (broken trimmers or defective contacts).
3.
Standard (15kHz)
Vertical Deflexion (Fig.4)
Defect:
• Horizontal white line, check:
1. Resistor R34 = 4,7 Ω 2 W
2. Integrated Circuit IC4 = TDA 1675.
3. Electrolytic capacitor C30=220 µF50 V
4. Adjustments Board.
Standard (15kHz)
• No or low power, dry the joints in the switching area and check:
1. Integrated Circuit IC101 = UC3842.
2. Transistor MOSFET Q101 = W7NA80.
3. Diode D125 = BY299.
4. Transistor MOSFET Q126 = IRF644.
5. Diode D109 = Zener 15V ½ W.
6. Resistor R112 = 0.82 Ω ½ W.
7. Resistors R113 – R114 = 1 Ω ½ W.
Defect:
• Horizontal white line, it is recommended to check:
1. Resistor R153 = 4,7 Ω 3 W.
2. Integrated Circuit IC104 = TDA1675.
3. Adjustments Board K105, see fig.14.
4. Diode D124 = BA159.
Standard (15kHz)
Modification power supply 220 / 110 V~:
Table I:
Code
Co-ordinates Description Component Quantity
110V~ 220V~
T1 Main filter Rossoni Rossoni 1
91304200 91304200
C79 Electrolytic Capacitor 150 NO YES 1
µF – 385 V
C6 – C78 Electrolytic Capacitor 470 YES NO 2
µF – 200 V
R120 Resistor 270 kΩ 1W NO YES 1
R120 – R1 Resistor 120 kΩ ½ W YES NO 2
PN4 Wire NO YES 1
PN3 Wire YES NO 1
PTC1 Resistor PTC 96013 96009 1
Philips Philips
Deflection
Videocolor yoke Socket
R 164 R 33 R 36
CRTs LH LV type
(mH) (mH)
A59ECY13X01 1,50 27,5
A59ECY13X38 1,50 12,0
A66ECY13X01 1,50 27,5 Single
A66ECY13X38 1,50 12,0 Focus
A79ECU13X01 1,50 24,6 1,2 Ω 3,3 Ω 22 MΩ
W66EDX013X010 1,50 26,1 1/2W 3W 1/2W
A76ECT93X01 1,50 24,6
Double
A76ECT13X01 1,50 24,6
Focus
A86ECT13X01 1,50 24,6
A66EHJ43X01 1,50 27,5 Sing.Foc
Philips CRTs
A59EAK71X11 1,58 8,6
Single 0,82 Ω 8,2 Ω
A66EAK71X11 1,58 8,6 Absent
Focus 1/2W 2W
A80EFF002X11 1,58 10,7
Samsung
Single 1,2 Ω 3,3 Ω
CRTs 1,35 24,4 Absent
Focus 1/2W 3W
A68QBT89X02
USA Imp.
USA Imp.
USA Imp.
USA Imp.
USA Imp.
USA Imp.
USA Imp.
EU Imp.
EU Imp.
EU Imp.
EU Imp.
EU Imp.
EU Imp.
EU Imp.
EU Imp.
2,7 nF 2000V
2,2 nF 2000V
8,2 nF 2000V
9,5 nF 2000V
6,8 nF 2000V
0,68µF 400 V
10 nF 2000V
0,22µF 400 V
0,33µF 400V
1µF 250 V
Yes
Yes
Yes
No
No
No
Table IX:
Table X:
Pins Jumpers
Company Code CR-Block Chassis
diameter SEM ELD
Sicte GTA 5033/B Present Large Standard 4–6
1182.0747
Absent Large Standard 4–6
1182.0448
Eldor
1192.0547
Present Small Standard 5–7
1242.5008
28386005
28386012
28386015
Present Dual Frequency
28386017
Semar Small 4–6
528046103
528046106 *
28386016
Absent Standard
528046104
1BP1 – 6227 Absent Large Standard 4–6
1ACP – 7232 Present Small Dual Frequency 4–6
Diemen HR
1AP1 – 8018 Absent Small Standard 4–6
1ACP – 8017 Present Small Dual Frequency 4–6
* This EHT is already supplied with the wiring on the ferrite core.
P.S. The transformers in bold are assembled on the current production model.
IMP! ⇒ In case of replacement on Standard chassis, check the correct value of R37 – R43 (see
table III on Page 33 e table IV on Page 34).
EHT Transformers
• The cable wound on the EHT transformer ferrite core (only two turns) must be positioned,
trough a two pins green connector, on K402 coordinate on the little board (22.0458) fixed on
the chassis main board (Fig. A).
EHT
Radiator view
DS101 Connection
view
R426
K402
Pin 5 di IC403
PZ101
PZ102
Fig.A
EHT Transformers
Technical information on EHT transformer replacement on
automatic dual frequency chassis (15 – 25 kHz).
Current Model
The cable wound on the EHT transformer ferrite core on a dual frequency chassis must be re-
assembled, on the replaced transformer, respecting the number of coils, the direction
(anticlockwise) and the polarity printed on the ends of the cable in order to guarantee the best
working of the chassis.
In fact the end with 3 circles printed on must be positioned on PZ101 (K113), the other one on
PZ102 (K113) on the monitor chassis, as shown in Fig. B.
PZ101
PZ102
Fig.B
Tabella XIII:
Table XV:
INTERVIDEO Supplier
C.R.T. 4000 CRT Serial Number
PHILIPS CRT Manufacturer
Type: CRT type
A68ESF002X11
Warning Manufacturer's instructions
Month: Month of assembling
Year: Year of assembling
Label on chassis:
• If supplied with CRT:
INTERVIDEO Supplier
MC 4000 Chassis serial number
PHILIPS Type: Brand & type of CRT
A68ESF002X11 assembled with chassis
Month: Month of assembling
Year: Year of assembling
• If supplied without CRT:
INTERVIDEO Supplier
CH 4000 Chassis serial number
PHILIPS Type: Brand & type of CRT utilised
A68ESF002X11 to calibrate the chassis
Month: Month of assembling
Year: Year of assembling
CONTENTS :
Chassis modifications
Pag.41 From 220 V~ to 110 V~ Standard and Dual Frequency (Tab.I-II).
Pag.42 Standard Chassis with 90° CRTs (Tab.III).
Pag.43 Standard Chassis with 110° CRTs (Tab.IV).
Pag.44 Dual Frequency Chassis (Tab.V).
Pag.45 CRTs USA impedance List (Tab.VI).
Pag.45 Dual Frequency Chassis with USA impedance CRTs (Tab.VII).
Pag.46 Technical Chassis differences with 90° and 110° CRTs (Tab.VIII-IX).
EHT Transformers
Pag.47 Our Range (Tab.X).
Pag.48 New Dual Frequency 34"/38"=0,96 mH version (Tab.XI).
Pag.49 Modifications for EHT replacement (1st model).
Pag.50 Modifications for EHT replacement (current model).
Labelling
Pag.53 CRTs, Chassis.
Notes: