Page 1
LG inverter modification “II”
Ref. nr. SCC_73709
Doc. version 1.2
October 30, 2009
Page 2
SCC_73709
COMPONENT KIT (996500095005)
The Component Kit includes the following components (for Master & Slave) :
• TVS zener diode (33 V) x 2
• MLCC capacitor (100 pF) x 2
• Resistor (DIP type or SMD) 4.7 Ω x 4
2
Page 3
SCC_73709
STEP 1
Confirm Inverter model name:
•PNEL-T707A(MASTER),
•PNEL-T708A(SLAVE).
REMARK 1
• It does not matter if the zener diode (modification “I”) exists or not for
inverter modification “II”.
3
Page 4
SCC_73709
STEP 2.1
Cut tracks:
- Cut the SW1 & SW2 tracks on both inverters.
- Confirm that there are no short circuits with metal
pieces of tracks, and there is no damage to other tracks !
PNEL-T707A
PNEL-T708A
4
Page 5
SCC_73709
STEP 2.2
1. Check the secure cut line (SW1 & SW2) by visual inspection first:
Visual inspection to verify if cut well and not damaged.
2. Check the resistance between two ‘via’ holes of the cut SW line:
Measure the resistance of the cutted SW1 & SW2 line through „via‟ holes
with a DVM (Digital Volt Meter).
Measure Point (Master) Measure Point (Slave)
Case 1 > Several tens of kΩ: Line cut well.
Case 2 > under 1 Ω: Line short.
※ After attaching the resistor, the resistance should be 4.2 ~ 5.2 Ω.
Cut Mark
5
Page 6
SCC_73709
STEP 2.3
Check pattern damage of parallel tracks
Cut Mark
PNEL-T707A PNEL-T708A
GND
Cut mark
GND
GND
SW2 Pattern
HN2 Pattern
SW1 Pattern
HN1 Pattern
GND
SW1 Pattern
HN1 Pattern
Case study for pattern damage of parallel tracks
Parallel tracks of SW line are HN1, HN2 and GND tracks.
- Case1> If cut the HN track by mistake Cause of Inverter malfunction.
Check : HN line‟s resistance should be under 0.5Ω when measured with DVM (resistance b.t.w. via holes of HN line).
- Case2> Damage on GND track by mistake No affect to Inverter function.
No damage on GND function because GND track is spread widely.
SW2 Pattern
HN2 Pattern
6
Page 7
SCC_73709
REMARK 2
• The kit of components can include the following resistors:
4 x DIP type resistors (4.7 Ω) with shrink tube (20 mm)
then go to step 3.1 and 3.2
OR
20mm
4 x SMD type resistors (4.7 Ω)
then go to step 3.3
7
Page 8
SCC_73709
STEP 3.1
Solder resistors on board PNEL-T708A:
- Remove the coating/varnish on solder point to reveal the copper pad.
- Solder resistor (DIP type resistors (4.7 Ω) with shrink tube (20 mm)) on solder points (red marks).
PNEL-T708A PNEL-T708A
8
Page 9
SCC_73709
STEP 3.2
Solder resistors on board PNEL-T707A:
- Remove the coating/varnish on solder point to reveal the copper pad.
- Solder resistor (DIP type resistors (4.7 Ω) with shrink tube (20 mm)) on solder points (red marks).
PNEL-T707A PNEL-T707A
9
Page 10
SCC_73709
REMARK 3
Front side of reworked inverter (DIP type resistor):
DIP type resistor (Front)
Side view dimension of implemented inverter
Take care that the height of the DIP type resistor is below the height of the transformer
because of the metal shielding on the inverter boards.
Shield Cover
3.5mm
Cover Bottom
11mm
Cap.
8mm
Resistor
1mm
Trans.
10.1mm
3.5mm
10
Page 11
SCC_73709
STEP 3.3
Solder SMD resistors on board PNEL-T707A and PNEL-T708A:
- Remove the coating/varnish on solder points to reveal the copper.
- Solder SMD resistor on created solder pads (red marks).
11
Page 12
SCC_73709
STEP 3.4
Solder capacitor (MLCC) on PNEL-T707A and PNEL-T708A:
-Solder capacitor MLCC (100 pF) on blue indicated position.
MLCC position
PNEL-T707A PNEL-T708A
PNEL-T707A PNEL-T708A
12
Page 13
SCC_73709
STEP 3.5
Solder zener diode (TVS) on PNEL-T707A and PNEL-T708A:
- Solder zener diode TVS (33 V) on red indicated position.
Classification Indication Attachment
Polarity Band mark on body Place band mark on assigned position
TVS position
PNEL-T707A PNEL-T708A
Non polarity No mark No need to distinguish the TVS direction
Polarity : Band mark position
Non-Polarity: No placing direction
PNEL-T707A PNEL-T708A
13
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14
Page 15
1
1
2
2
3
3
4
4
D D
C C
B B
A A
Title
Number RevisionSize
A4
Date: 2009-1-10 Sheet of
File: E:\ \..\ .SCHDOC Drawn By:
12
11
10
9
8
7
6
5
4
3
2
1
CN1
F1
5A
C49C2
35V/330UF
C1
35V/330UF
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16 17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
IC2
BD9897FS
Q1
FDD8447L
Q6
FDD8447L
Q4
FDD8447L
Q5
FDD8447L
T1
C5
C7
C9
R4
20
R11
20
R21
20
R31
20
1
2
CN2
C10
C14
C15
1
2
3
4
5
6
7
8
9
10
CN3
C16
D9 D10
R25
22K
R32
22K
R51
33K
R53
22K
R36
100K
C25
R241 56 R243
16
R242
68
D7
R40
0
R33
47K
R29
1K
C27
C23
1
2
3
4
5
6
7 8
9
10
11
12
13
14
IC3
LM2901
R1
1K
R8
360K
C26
R66
10K
R52
150K
C37
24VCC
C18
D5
R71
2.7K
R69
2.7K
R68
2.7K
R70
2.7K
ZD1 C19
C17
D4
C24 R30
750K
C24
D11
R44
22K
R28
2.4K
R27
56
C22
R2
4.7K
C28 R35
24K
5VCC
D13
5VCC
R13
100K
R17
130K
R74
0
R67
10K
R15
10KC30
1
2
3
4 5
6
7
8
VCC
GND
IC1
LM2904
5VCC
R19
18K
R20
100KR16
100K
1
2
3
4
CN7
R106
470
R9
82K
R6
68K
R49
15K
R62
10K
Q7
Q9
5VCC
C31
C32
C33
5VCC
R46
22K
C34
R64
22K
C20
C8
R23
100K
R24
13K
R57
5.2K
C35
R59
10K
C12
R61
750K
R60
360K
R63
22K
R65
10K
HIU 812 M
C39
R14
150K
R18
43K C40
5VCC
C13
R56
100K
C6
R3
82K
R10
22K
P0CN101
P0CN101
P0R7002
P0R6802
P0R7001 P0R7002 P0R7101 P0R7102
P0R7001 P0R7102
P0R6801 P0R6802 P0R6901 P0R6902
P0R6801 P0R6902
P0R7101
P0R6901
P0ZD102
P0ZD101 P0ZD102
P0ZD101
P0C1902
P0C1901 P0C1902
P0C1901
P0D50
P0D50
P0D50
P0D50
P0C1801 P0C1802
P0C1801
P0C1802
P0IC2032
P0IC201
P0IC201
P0R2802
P0C2202
P0R2702 P0R2801
P0R2701 P0R2702 P0R2801 P0R2802
P0R2701
P0C2201 P0C2202
P0C2201
P0C2802
P0C2801 P0C2802
P0C2801
P0R3502
P0R3501 P0R3502
P0R3501
P0IC202
P0IC202
P0IC203
P0IC203
P0IC204
P0IC204
P0IC205
P0IC205
P0IC206
P0IC206
P0IC207
P0IC207
P0IC208
P0IC208
P0IC209
P0IC209
P0IC2010
P0IC2010
P0IC2011
P0IC2011
P0IC2012
P0IC2012
P0IC2013
P0IC2013
P0IC2014
P0IC2014
P0IC2015
P0IC2015
P0IC2016
P0IC2016
P0IC2032
P0IC2031
P0IC2031
P0IC2030
P0IC2030
P0IC2029
P0IC2029
P0IC2028
P0IC2028
P0IC2027
P0IC2027
P0IC2026
P0IC2026
P0IC2025
P0IC2025
P0IC2024
P0IC2024
P0IC2023
P0IC2022
P0IC2022
P0IC2021
P0IC2021
P0IC2020
P0IC2020
P0IC2019
P0IC2019
P0IC2018
P0IC2018
P0IC2017
P0IC2017
P0D40
P0D40
P0D40
P0D40
P0R2302
P0R2301 P0R2302 P0R2401 P0R2402
P0R2301 P0R2402
P0R2401
P0C1701 P0C1702
P0C1701
P0C1702
P0R401 P0R402
P0R401
P0Q102
P0Q102
P0R402
P0R1101 P0R1102
P0R1101
P0Q402
P0Q402
P0R1102
P0R2101 P0R2102
P0R2101
P0Q502
P0Q502
P0R2102
P0R3101 P0R3102
P0R3101
P0Q602
P0Q602
P0R3102
P0Q101
P0Q101 P0Q501
P0Q103 P0Q401
P0Q103 P0Q401
P0Q403 P0Q501
P0Q403
P0Q503 P0Q601
P0Q503 P0Q601
P0C802
P0C801 P0C802
P0C801
P0C501 P0C502
P0C501
P0C701 P0C702
P0C701
P0C901 P0C902
P0C901
P0C502
P0C702
P0T101
P0C902 P0T101
P0T102
P0T102
P0D70
P0D70
P0D70
P0D70
P0T103
P0T103
P0T104
P0T104
P0R4002
P0R4001 P0R4002
P0R3302 P0R4001
P0CN201
P0CN201
P0CN202
P0CN202
P0C1001 P0C1002
P0C1001
P0C1401 P0C1402
P0C1401
P0C1501 P0C1502 P0C1601 P0C1602
P0C1002
P0C1501
P0C1402
P0R24202
P0R24102
P0R24201 P0R24202 P0R24301 P0R24302
P0R24201 P0R24302
P0R24101 P0R24102
P0R24101
P0R24301
P0C1502 P0C1601
P0D90
P0C1602
P0D90
P0D90
P0D90
P0R5102
P0R3601 P0R3602
P0R3601
P0R5101 P0R5102
P0R5101 P0R5302
P0R5301 P0R5302
P0R5301
P0R3602
P0C101 P0C102
P0C101
P0C102
P0C201 P0C202
P0C201
P0C202
P0C4902
P0C4901 P0C4902
P0C4901
P0F101 P0F102
P0F101
P0F102
P0R802
P0D100
P0D100
P0D100
P0D100
P0R2502
P0R801 P0R802
P0R801
P0R2501 P0R2502
P0R2501 P0R3202
P0R3201 P0R3202
P0R3201
P0CN102
P0CN102
P0CN103
P0CN103
P0CN104
P0CN104
P0CN105
P0CN105
P0CN106
P0CN106
P0CN107
P0CN107
P0CN108
P0CN108
P0CN109
P0CN109
P0CN1010
P0CN1010
P0CN1011
P0CN1011
P0CN1012
P0CN1012
P0C2602
P0C2601 P0C2602
P0C2601
P0R102
P0R101 P0R102
P0R101
P0IC101
P0IC101
P0IC102
P0IC102
P0IC103
P0IC103
P0IC104
P0IC104
P0C3002
P0C3001 P0C3002
P0C3001
P0R1302
P0R1301 P0R1302
P0R1301 P0R1702
P0R1701 P0R1702
P0R1701
P0IC108
P0IC108
P0IC107
P0IC107
P0IC106
P0IC106
P0IC105
P0IC105
P0D1302
P0D1301 P0D1302
P0D1301
P0R6702
P0R7401 P0R7402
P0R7401
P0R7402
P0R6701 P0R6702
P0R1502 P0R6701
P0R1501 P0R1502
P0R1501
P0R301 P0R302
P0R301
P0R302
P0R4601 P0R4602
P0R4601
P0R4602
P0CN3010
P0CN3010
P0CN309
P0CN309
P0CN308
P0CN308
P0CN307
P0CN307
P0CN306
P0CN306
P0CN305
P0CN305
P0CN304
P0CN304
P0CN303
P0CN303
P0CN302
P0CN302
P0CN301
P0C2401 P0C2402
P0C2401
P0C3902
P0C3901 P0C3902
P0C3901
P0R3001 P0R3002
P0R3001
P0R3002
P0C2402
P0C2401 P0C2402
P0R4402
P0R4401 P0R4402
P0R4401
P0R201 P0R202
P0R201
P0D1101 P0D1102
P0D1101
P0D1102
P001
P002 P001
P002
P0R202
P0R1002
P0R1001 P0R1002
P0R1001
P0R6401 P0R6402
P0R6401
P0R6301 P0R6302
P0R6301
P0R6302
P0R6501 P0R6502
P0R6502
P0C3301 P0C3302
P0C3301 P0C3302
P0R6402
P0C3401 P0C3402
P0C3401 P0C3402
P0C2001 P0C2002
P0C2001 P0C2002
P0C3202
P0IC3014
P0IC301
P0IC301
P0IC302
P0IC302
P0IC303
P0IC303
P0IC304
P0IC304
P0IC305
P0IC305
P0IC306
P0IC306
P0IC307
P0IC307
P0IC3014
P0IC3013
P0IC3013
P0IC3012
P0IC3012
P0IC3011
P0IC3011
P0IC3010
P0IC3010
P0IC309
P0IC309
P0IC308
P0IC308
P0R5601 P0R5602
P0R5601
P0C3201 P0C3202
P0C3201
P0R5602
P0C601 P0C602
P0C601
P0C602
P0R5202
P0R5201 P0R5202
P0R5201
P0R6602
P0R6601 P0R6602
P0R6601
P0C2502
P0C2501 P0C2502
P0C2501
P0R5902
P0R5901 P0R5902 P0R6001 P0R6002
P0R5901 P0R6002
P0C3702
P0R6001
P0R6102
P0C3701 P0C3702
P0C3701
P0Q603
P0Q603
P0C2301 P0C2302
P0C2301
P0C2701 P0C2702
P0C2701
P0C1202
P0R5702
P0C1201 P0C1202
P0C1201
P0R5701 P0R5702
P0R5701
P0C3502
P0C3501 P0C3502
P0C3501
P0R6101 P0R6102
P0R6101 P0R6501
P0R2901 P0R2902
P0C2302
P0R2901
P0C2702
P0R6202
P0R6201 P0R6202
P0C3102
P0C3101 P0C3102
P0C3101
P0Q70 P0R6201
P0Q70
P0Q70
P0R2902
P0R3301 P0R3302
P0R3301
P0Q70
P0R4902
P0R4901 P0R4902
P0Q90 P0R4901
P0Q90 P0R601
P0Q90
P0Q90
P0R601 P0R602
P0R902
P0R901 P0R902
P0R901
P0CN701
P0CN701
P0CN702
P0CN702
P0CN703
P0CN703 P0R602
P0CN704
P0CN704
P0R10602
P0R10601 P0R10602
P0R10601
P0R1901 P0R1902
P0R1901
P0R1602
P0R1601 P0R1602
P0R1601
P0R1902
P0R2002
P0R2001 P0R2002
P0R2001
P0R1402
P0R1401 P0R1402
P0R1401
P0R1802
P0R1801 P0R1802
P0R1801
P0C4002
P0C4001 P0C4002
P0C4001
P0C1302
P0C1301 P0C1302
P0C1301
Page 16
1
1
2
2
3
3
4
4
D D
C C
B B
A A
Title
Number RevisionSize
A4
Date: 2009-1-10 Sheet of
File: E:\ \..\ .SCHDOC Drawn By:
12
11
10
9
8
7
6
5
4
3
2
1
CN201
C249
F201/5A
HIU 812 S
Q201
FDD8447L
Q204
FDD8447L
Q206
FDD8447L
Q205
FDD8447L
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1617
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
IC202
BD9897FS
C205
C210
C207
C209
C241 C211
C242 C229
C208
C202
35V/330UF
C201
35V/330UF
T201
1
2
CN202
R204
20
R211
20
R221
20
R231
20
10
9
8
7
6
5
4
3
2
1
CN203
C214 C215 C216
R253
6.2K
R251
33K
R236
100K
C225
R241
56 R243
16
R242
68
R240
0
R233
47K
R247
1K
R229
1K
C224
C227
C221
R250
10K
ZD202
Q208
C237
C218
R227
56
R228
2.4K
C222
R235
100K
R255
100K
C232
C233
R268
2.7K
R270
2.7K
R269
2.7K
R271
2.7K
ZD201
C219
C217
C244
R246
22K
R226
68K
R230
33K
C224
R223
100K D209D210
D207
D205
D204
P0C20101 P0C20102
P0R26802
P0CN201012
P0CN201012 P0F201/5A01
P0CN201011
P0CN201011
P0CN201010
P0CN201010
P0CN20109
P0CN20109
P0CN20108
P0CN20108
P0CN20107
P0CN20107
P0CN20106
P0CN20106
P0CN20105
P0CN20105
P0CN20104
P0CN20104
P0CN20103
P0CN20102
P0CN20102
P0CN20101
P0F201/5A01 P0F201/5A02
P0F201/5A02
P0C24902 P0CN20103
P0C24901 P0C24902
P0C24901
P0R26801 P0R26802 P0R26901 P0R26902
P0R26801 P0R26902
P0C21901 P0C21902
P0C21901
P0R27002
P0R27001 P0R27002 P0R27101 P0R27102
P0R27001 P0R27102
P0ZD20101 P0ZD20102
P0ZD20101
P0D2040
P0R22601 P0R22602
P0R24601 P0R24602
P0R24601
P0C20101
P0C20102
P0C20201 P0C20202
P0C20201
P0C20202
P0C24102
P0C24101 P0C24102
P0C24101
P0R20401 P0R20402
P0R20401
P0Q20102
P0Q20102
P0R20402
P0C21102
P0C21101 P0C21102
P0C21101
P0Q20101
P0Q20101 P0Q20501
P0C20501 P0C20502
P0C20501
P0C20502
P0CN20201
P0CN20201
P0CN20202
P0CN20202
P0Q20103 P0Q20401
P0Q20103 P0Q20401
P0C20701 P0C20702
P0C20701
P0C20702
P0R21101 P0R21102
P0R21101
P0Q20402
P0Q20402
P0R21102
P0C20901 P0C20902
P0C20901
P0C20902
P0Q20403 P0Q20501
P0Q20403
P0IC202016
P0IC202017
P0C23301 P0C23302
P0C23301
P0R25002
P0C23302
P0R25001 P0R25002
P0R25001
P0ZD20202
P0IC202017
P0IC202018
P0IC202018
P0IC202019
P0IC202019
P0IC202020
P0IC202020
P0IC202021
P0IC202021
P0IC202022
P0IC202022
P0IC202023
P0IC202023
P0IC202024
P0IC202025
P0IC202026
P0IC202026
P0IC202027
P0IC202027
P0IC202028
P0IC202029
P0IC202030
P0IC202030
P0IC202031
P0IC202031
P0IC202032
P0IC202032
P0ZD20201 P0ZD20202
P0ZD20201
P0Q20802
P0Q20802
P0C23702
P0C23701 P0C23702
P0C23701
P0Q20803
P0Q20803
P0Q20801
P0Q20801
P0C20802
P0C20801 P0C20802
P0C20801
P0C21701 P0C21702
P0C21701
P0R22301 P0R22302
P0R22301
P0R22302
P0IC202016
P0IC202015
P0IC202015
P0IC202014
P0IC202014
P0IC202013
P0IC202013
P0IC202012
P0IC202012
P0IC202011
P0IC202011
P0IC202010
P0IC202010
P0IC20209
P0IC20209
P0IC20208
P0IC20208
P0IC20207
P0IC20207
P0IC20206
P0IC20206
P0IC20205
P0IC20204
P0IC20204
P0IC20203
P0IC20203
P0IC20202
P0IC20202
P0IC20201
P0IC20201
P0R22801
P0R23501 P0R23502
P0R23501
P0R25501 P0R25502
P0R25501
P0C22201 P0C22202
P0C22201
P0R23502
P0R25502
P0C22202
P0R22701 P0R22702 P0R22801 P0R22802
P0R22702
P0D2050
P0C24401 P0C24402
P0C24401
P0C21801 P0C21802
P0C21802
P0R22101 P0R22102
P0R22101
P0R22102 P0R22701 P0R22802
P0R23101 P0R23102
P0R23101
P0R23102
P0Q20502
P0Q20502
P0Q20602
P0Q20602
P0C24202
P0C24201 P0C24202
P0C24201
P0Q20503 P0Q20601
P0Q20503 P0Q20601
P0C22902
P0C22901 P0C22902
P0C22901
P0T20101
P0T20101 P0C21002
P0T20103
P0T20103
P0C21001 P0C21002
P0C21001
P0T20102
P0T20102
P0T20104
P0C21401 P0C21402 P0C21501 P0C21502 P0C21601 P0C21602
P0C21402 P0C21501
P0D2100
P0D2100
P0C21602
P0D2090
P0D2090
P0D2090
P0R24201 P0R24202 P0R24301 P0R24302
P0R24201 P0R24302 P0R24202
P0R24301
P0R23001 P0R23002
P0C22401 P0C22402
P0R23002
P0C22402
P0C22702
P0R22902
P0Q20603
P0Q20603
P0R23301 P0R23302
P0R23301
P0R23302 P0R24001
P0R24702
P0R24001 P0R24002
P0D2070
P0D2070
P0R24101 P0R24102
P0R24101
P0R25102
P0CN203010
P0CN203010
P0CN20309
P0CN20309
P0C22701 P0C22702
P0C22701
P0C22401 P0C22402
P0C22401
P0C22402
P0R22901 P0R22902
P0R22901
P0R24701 P0R24702
P0R24701
P0C22501 P0C22502
P0C22501
P0C23202
P0R23601 P0R23602
P0R23601
P0R23602
P0R25101 P0R25102 P0R25301 P0R25302
P0R25101 P0R25302
P0R25301
P0CN20308
P0CN20308
P0CN20307
P0CN20306
P0CN20306
P0CN20305
P0CN20304
P0CN20304
P0CN20303
P0CN20303
P0CN20302
P0CN20302
P0CN20301
P0CN20301
P0C22502
P0C23201 P0C23202
P0C23201
P0C22101 P0C22102
P0C22101 P0C22102
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