Service manuals, schematics, eproms for electrical technicians

ACER-7254E DELL E550

MONITOR - SERVICE MANUAL
Type: (PDF)
Size
976.4 KB
Page
30
Category
MONITOR
SERVICE MANUAL
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  • Also known:
    ACER-7254E DELL E-550 ACER7254E E550 ACER 7254 550 7254E
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  • See related repair forum topics below. May be help you to repair.
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Relevant MONITOR forum topics:
Acer Al1715 kép pár másodperc után elsötétül
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
Acer al1715sm vezérlőpanel
Sziasztok! Kérdezném,hogy van-e valakinek Acer al1715sm lcd monitorhoz vezérlőpanelje?
Acer V223HQ - ILPI-075 Rev.A power supply turns off
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..
ACER AT1919D tv/monitor nem indul...
Üdv Kollegák! A cimben levő tv/ monitor -ról keresek valami használható doksit. Teljesen halott még a st-by led sem világit, a tápja megy, sec. feszek kicsit érdekesnek tünnek de sajnos nem tudom mi lenne a helyes, rajz hiányában. IPS penel van benne, az inverterhez 20v, a mainboard-hoz 7,5 és 3,2 volt megy át .A main-on levő stab tokokon már olyan feszeket mérek (talán) amennyinek lennie kellene. Csak az IPS panelon találtam használható tipusszámot:TU08Q145 Köszönettel: Csinti
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