Philips HP L1502 - Repair Flow Chart (Continued); Bad brightness; Bad image

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HP L1502
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Repair Flow Chart (Continued)
Bad brightness
Check
Inverter panel output
625~765Vrms
No
Yes
Bad Inverter
panel
Check fluorescent
lamp
Bad image
Check
Video,fh/fv
signals
Yes
Yes
Check LCD panel
No
No
Check LCD panel
Check
all connectors &
LVDS cable
No
Check main panel
Check components
cold soldering