LG inverter modification “II”
Ref. nr. SCC_73709 Doc. version 1.2 October 30, 2009
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 |
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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”.
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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
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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) |
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Cut Mark |
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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.
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