Hi,
I'm sorry for writing in English, but I don't understand any single word in Hungarian and I couldn't find an English subforum there.
I have changed the LVDS controller and now it's working perfectly, but I need help with the backlight. The CCFL lamps in the screen are OK. I connected the screen to another inverter (from BenQ T705, made on TL1451 which also has "protect" function) and the backlight worked perfectly. Again, I connected other screen to the malfunctioning ILPI-075 inverter and the screen also goes blank.
I changed all THT electrolytic capacitors on the board, but not much has changed. Before, the backlight was turning off almost immediately, now it glows for 1-2 seconds and then turns off.
The HV side of inverter transformers is about 470 ohm, they look OK.
I measured random capacitor in the +16V line, which is supplying the high voltage inverters.
We can see how the voltage went down while the backlight was powered on.
Also, the ON/OFF signal on ICL837's pin 8 is always present after powering up the power supply, even after the backlight turns off.
I don't have any idea what to check now..
Üdv mindenkinek.
ACER AL1916W hez keresek lcd panelt.
A komplett panel tipusa LTM190M2-L31 samsung
Sziasztok...
Mind a 2 monitor bekapcsol, ki irja hogy "Cabel not connected" majd kb 3s utan kikapcsol es csak villog a Power led... Hibakat talaltam az inverterek koreben: kondi, elko, az elozo mester belebabralt meg ilyesmi, de ellakadtam.
Kerem ha valaki tud segiteni irjn,,,,elore is kosz...
Sziasztok
A mult heten kicsereltem par elkot ebben a monitorban,nem mukodott,a led se gyult ki,ket napig hasznaltam az en sz gepemel.Ma elvitte a kolegam ,Felhivott telefonon hogy ez jelenik meg a kijelzon: Auto config,Please Wait.Azt monja mielott lealt teljesen akkor is ezt irta ki.Mit jelent ez miert irja ki?Holnap hozzak vissza.