Service manuals, schematics, eproms for electrical technicians

ROADSTAR 7080-7-MONITOR AND DVBT RECIEVER

MONITOR - SERVICE MANUAL
Type: (PDF)
Size
6.8 MB
Page
23
Category
MONITOR
SERVICE MANUAL
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  • Also known:
    ROADSTAR AND DVBT RECIEVER 70807 MONITOR 7080
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Relevant MONITOR forum topics:
LG F700B hiba
Sziasztok, Lenne egy kis problémám egy F700B monitorral: bekapcsolás után nem ad képet (osd sem látszik) és szétszedve a képcsőpipa környékéről halk sercegést/pattogást hallani. Valakinek van ötlete, hogy merre keressem a hibát?
DVI helyett D-SUB kábel ?
Sziasztok! Van egy monitorom amin DVI csatlakozó van, (ezért nem tudom használni) viszont ma kaptam egy ugyanolyan típusú hiányos rossz monitort, de D-SUB csatlakozóval. Kérdésem, megcserélhetem e simán a két kábelt (panel csatlakozó ugyanaz) vagy csak a scaler-el együtt? Első és második ránézésre is egyforma a két vezérlő. Köszönöm előre is a segítséget.
iiyama e435s 17" monitor váltogatja a színeket
Sziasztok! A címben említett monitor táp rádugás után csak váltogatja a színeket. Gombokra reagál, de ha valamit megnyomok, max 1-2 másodpercig marad a képernyőn, mert a következő szín eltünteti a menüt. Gondolom burn-in módban van, de sehogy sem tudom helyre pofozni :( Olvastam, hogy sok embernek megjavult a szervíz menü előhívása(és használata) után, (+ és - gomb nyomása mellett indítani a monitort) de az a baj, hogy amint kap tápot már indul is a színcserélgetés. Power gombra nem reagál, vagyis nem tudom lekapcsolni, csak ha elveszem tőle a tápot. Valaki már találkozott ilyennel? Minden segítségnek örülnék. Előre is köszönöm! Üdv: Laci
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..
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