Service manuals, schematics, eproms for electrical technicians
ACER 77G
Type: 
(RAR)
(RAR)Size
1.7 KB
1.7 KB
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Category
MONITOR
EPROM
MONITOR
EPROM
If you get stuck in repairing a defective appliance download this repair information for help. See below.
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Good luck to the repair!
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Looking for similar acer manual?
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ACER 77G 77
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Relevant MONITOR forum topics:
Kedves kollégák!
Valószínűleg Flash vagy eprom hibás a kicsike. A kijelző teszt üzem módban van a végtelenségig(szinek váltogatása). Ehhez keresnék tartalmat.
Elvileg a szokásos orosz aranybánya oldalon van hozzá.
https://remont-aud.net/dump/mnt/acer_gd245hq_shassi_main_board_48_7d701_021/12-1-0-43688
Sajnos én ide nem tudok bejelentkezni(teszt kitöltést nem tudom értelem szerűen lefordítani). Ha meg tenné valaki,hogy letölti.Nagy lenne az öröm!!!
üdv.
Valószínűleg Flash vagy eprom hibás a kicsike. A kijelző teszt üzem módban van a végtelenségig(szinek váltogatása). Ehhez keresnék tartalmat.
Elvileg a szokásos orosz aranybánya oldalon van hozzá.
https://remont-aud.net/dump/mnt/acer_gd245hq_shassi_main_board_48_7d701_021/12-1-0-43688
Sajnos én ide nem tudok bejelentkezni(teszt kitöltést nem tudom értelem szerűen lefordítani). Ha meg tenné valaki,hogy letölti.Nagy lenne az öröm!!!
üdv.
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..
Üdv
Segítséget szeretnék kérni egy acer al1715 javításában,
Hibajelenség: bekapcsolás után bejön a kép, acer logo, utána a rendes kép, és ezután kb 3-4 másodperc után elsötétül a kép, led marad zöld, ha lehúzom a vga csatit és visszadugom megint bejön a kép és ugyanúgy elsötétül..
ezen kívül, elsötétülés után halványan sem látok képet..
Amit eddig tettem: a tápban átnéztem és átforrasztottam minden amit repedtnek láttam, vagy kinézetre úgy nézett ki, és kicseréltem az összes elkót a tápban újra!
Csatoltam képeket, a beazonosítás megkönnyítése érdekében..
Kérem segítségeteket, mit nézzek, mérjek meg, vagy miként járjak el a hiba javítása során..
Sniper
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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