Service manuals, schematics, eproms for electrical technicians
QUANTA NR3A REV.1A SCH
Type: 
(PDF)
(PDF)Size
1.6 MB
1.6 MB
Page
46
46
Category
NOTEBOOK-PC
SERVICE MANUAL
NOTEBOOK-PC
SERVICE MANUAL
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QUANTA NR-3A REV.-1A NR3A REV.1A NR REV.
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Relevant NOTEBOOK-PC forum topics:
Szevasztok
Ma bekapcsolás után azt vettem észre ha mondjuk görgrtem lefelé az oldalt a tartalom helyett csak függőleges szines csikok jelennek meg,legyen az kép vagy irás az tán megint jó,mi lehet a gebasz cserélhetek gépet,csinálnék képet csak nemtudom hogyan kell az oldalt rögziteni.
Köszöntök Minden Kedves Tanyakedvelőt !
Unokám - címben jelzett tipusú, MS-1672 model laptopja alvó állapotra lett kikapcsolva. Ismételt bekapcsoláskor már nem sikerül éleszteni. Világít az alvó állapotot jelző ikon, érintőkre, Caps Lockra, Num Lockra reagál. Tájékoztatása szerint a bios elem már nem jó benne és jelenleg a HDD és az akku is el van távolítva belőle. Tanácsot kérek mi a megoldás a felélesztésére.
Köszönöm.
These are PC speakers, picture of the board here
http://www.mediafire.com/view/pzd2kbq5ja0avz8/HPIM0436.JPG/file
Have replaced the TDA2030 IC's with new from stock, still get very hot. Tried now TDA2040 IC's, still run hot. Replaced all electrolytics
and even most the disc caps and the diodes for the bridge, and some of the small surrounding support resistors, really baffled....
Original problem seems to be they put too strong an input into the 3.5mm jack, and there was an MOV on the jack that shorted. Replaced it plus 2
other MOV's on the board. It seemed to be ok but played sound really too low, and only from the bass speaker. The smal L-R tweeters have never put out any sound at all...
they measure ok ohms, so they should work.
http://www.mediafire.com/view/pzd2kbq5ja0avz8/HPIM0436.JPG/file
Have replaced the TDA2030 IC's with new from stock, still get very hot. Tried now TDA2040 IC's, still run hot. Replaced all electrolytics
and even most the disc caps and the diodes for the bridge, and some of the small surrounding support resistors, really baffled....
Original problem seems to be they put too strong an input into the 3.5mm jack, and there was an MOV on the jack that shorted. Replaced it plus 2
other MOV's on the board. It seemed to be ok but played sound really too low, and only from the bass speaker. The smal L-R tweeters have never put out any sound at all...
they measure ok ohms, so they should work.
Sziasztok!
Szenvedek egy fenti tipusu tablageppel. Az usb csatija kitort es ki kellene cserelni, ha lehetseges. Azonban nem tudom szetbontani es nem is akarom szetbarmolni a burkolatot.
Ez az a fajta "csomagolas, ahol a hatlap majdnem teljesen alu lemez. Csavar sehol nem latszik korul. De gondolom hogy az alulemez alatt sem lesz csavar, mert ha azt lefeszegeti az ember, akkor undormanyul fog kinezni a hullamos, csipkezett szelu alulemez. Vagyis marad korbe a kijelzo es a muanyag haz kozotti kormok, kapcsok, azonban itt hiaba probalkozom, nem hajlando nyilni.
Szedett mar szet valaki ilyet? Hol lehet meginditani?
Koszonom!
Udv!
Imre
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