Service manuals, schematics, eproms for electrical technicians

LG CHASSIS-MC-75A

TV - SERVICE MANUAL
Type: (RAR)
Size
2.0 MB
Page
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Category
TV
SERVICE MANUAL
If you get stuck in repairing a defective appliance download this repair information for help. See below.
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  • Also known:
    LG CHASSISMC 75 CHASSIS MC 75A
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  • See related repair forum topics below. May be help you to repair.
Warning!
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Relevant TV forum topics:
LG 60PZ950 Plazma TV kép hiba

Sziasztok!

Kissé zöldfülű vagyok még a témában, viszont állítólag tanulékony.

Olyan problémám van, hogy a címben említett TV a következő hibát produkálja: Videó
Csatoltam pár képet is.

Ez gyakorlatilag a test pattern akarna lenni. Az összes feszültség (5V, Va, Vs, Vy, Vsc) kivéve a Vzb-t (Z-sus panelen).

Vzb névlegesen 110V, viszont csak ilyen 89-92V körüli és a kis trimmer potméterével sem tudom már feljebb vinni.

Az IGBT-ket, diódákat kiforrasztottam és kimértem. Nem zárlatosak, és elvileg nyitnak, zárnak.

Lehetséges elkó hiba? Vagy esetleg még valamit még tudok mérni-nézni?

Van oszcilloszkópom, ha kell.

Köszönöm a segítséget!

 

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Sziasztok! Valaki tud ehhez a TV-hez service manualt? Vagy honnan lehetne letölteni? Köszi! Attila
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