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Deze versie is geschreven door: Jelle Algra ,

Titel:

Picture but no backlight

Tekst:

Hey guys,
 
I recently bought a tv which had no backlight for 20 euros. I changed the backlights and the backlight inverter (which i thought they’re not in lcd led tv’s) but still the backlight doesn’t come on.
 
If i look at the voltages that go to the inverter board they are okay. But the inverter board gives for under a second a 94v to the backlight(to short to turn them on) and then goes to 0v.
 
If I understand correctly, does this mean the mainboard is not telling the inverter to come on? And if so is this fixable by resoldering a resistor or chip to get it working?
 
=== Update (05/27/2019) ===
 
The exact model is: 40PFL3208H/12.

Apparaat:

Philips Television

Status:

open

Origineel bericht door: Jelle Algra ,

Titel:

Picture but no backlight

Tekst:

Hey guys,

I recently bought a tv which had no backlight for 20 euros. I changed the backlights and the backlight inverter (which i thought they’re not in lcd led tv’s) but still the backlight doesn’t come on.

If i look at the voltages that go to the inverter board they are okay. But the inverter board gives for under a second a 94v to the backlight(to short to turn them on) and then goes to 0v.

If I understand correctly, does this mean the mainboard is not telling the inverter to come on? And if so is this fixable by resoldering a resistor or chip to get it working?

Apparaat:

Philips Television

Status:

open