Service manuals, schematics, eproms for electrical technicians
ACER FBT1772IE
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248.5 KB
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Category
MONITOR
SERVICE MANUAL
MONITOR
SERVICE MANUAL
If you get stuck in repairing a defective appliance download this repair information for help. See below.
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Looking for similar acer manual?
Good luck to the repair!
Please do not offer the downloaded file for sell only use it for personal usage!
Looking for similar acer manual?
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- Also known:
ACER FBT-1772IE FBT1772IE FBT 1772 IE
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Have a nice Day! - See related repair forum topics below. May be help you to repair.
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Relevant MONITOR forum topics:
Helló!
Skóppal mérve a csöveken egyforma jeleket mértem, de ellenállásmérővel pár ohmos különbség van a 2 trafó között. Volt már ilyen esetem amikor trafó okozta a hibát, de most nem vagyok benne biztos. Sztetek?
Köszi, üdv.: Ízirájder
Kedves Kollégák!
Acer AL1715S táp-inverter paneljével küzdök. Típusa:AR577 VP-583
Scalertől kap engedélyező jelet, és fényerőt, táp jó lelámpáztam 5 és 16V-t stabil.
Az inverter nem megy, dugtam rá próba lámpákat, általában eddigi inverter hibáimnál valamennyire mindig
felvillan a lámpa, de most meg sem nyekken egyik sem. Biztosíték nincs az inverteren sehol.
Inv.trafó lábain nem mérek semmit. Fetek jónak tűnnek.
Volt valakinek ilyen hibája?
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..
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..
The backlight in my old Acer monitor is only half-lit and there comes a 50 Hz buzzing sound from the inverter transformers.
The LCD image itself is fine.
What could it be, the CCFLs, the inverter or the power supply, does anyone know? Are the CCFLs OK?
The LCD image itself is fine.
What could it be, the CCFLs, the inverter or the power supply, does anyone know? Are the CCFLs OK?
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