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DYNEX DX LTDVD20

TV - SERVICE MANUAL
Type: (PDF)
Size
5.9 MB
Page
57
Category
TV
SERVICE MANUAL
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  • Also known:
    DYNEX DX LTDVD-20 LTDVD20 LTDVD 20
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  • See related repair forum topics below. May be help you to repair.
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Relevant TV forum topics:
Videoton Waltham wt637
Üdv! Van ez a tv de nincs kép tunnerrol.Hang az van.Av-n bejön a kép de fut vízszintesen és függőlegesen is,és nem bírom beállítani.Tda1950,tda1170,kondik,meg egy csomó minden cserélve.Tippeket kérnék ha lehet.Előre is köszi. Blaslie
Panasonic TX-L42ETW5 Device does not start anymore, stand-by LED lights up red, no SOS error code
Manufacturer: Panasonic

Type: TX-L42ETW5

Chassi: LA35



Hello everybody,

I could determine or measure the following with the device:

Device does not start anymore, stand-by LED lights red when device is plugged in and flashes red as soon as an IR command (key press) is sent via the remote control. Voltages of power supply STB 5V and signal LCD_TV_SUB_ON come from A-board. Power supply starts, supplies P15V and SUB1.1V, 1.5V, 1.8V, 3.3V, 5V, HDMI3.3V and USB5V are generated on the A-Board (stand for about 2.5 seconds). Then signal LCD_TV_SUB_ON goes low (voltages go away to STB 5V) and after about 2 seconds back to high (endless). What is missing is the voltage PNL12V which is switched on by PANEL_VCC_ON2. PANEL_VCC_ON2 always has a low signal and does not change its state. Power supply also provides for the 2.5 seconds the 24V for the backlight. Clocking of LCD_TV_SUB_ON starts immediately after plugging in the mains plug (also without IR command). SOS error code is not output. The over-voltage circuit in IC 5000 pin 7 also does not respond. Attached is the timing diagram from the technical training of Panasonic where I have drawn until when the boot process behaves normally.

In my opinion a mistake on the A-board? Does anyone have a tip?

greetings

Andi
Philps 21PV385/58
Üdv Mesterek! Segítséget kérek. Vizszintes eltérítési hibája volt a készüléknek, függ. csik volt csak. Ezt megcsináltam. Forr. hiba okozta. Tobbi hibája, nincs kép. Hang van, füttés megy, KÉK a háttér OSD felirat van menü látható, olvasható. Minden 6-8 újra bekapcsolás után rendesen müködik, de kikapcsolás után megint nics kép. Minden segítséget elfogadok. Üdv mindenkinek.
Orion T 2930 STX B/FL Ch_Beko ZX 8190-32 nem kapcsol készenlétre
Sziasztok! A következő gondom van vele. Készenlét van, sortáp mégis 125V és a többi fesz is megvan, mint amikor stby-ból üzemre kapcsol.Sorvezérlés nem megy.A készenlét sem kapcsolható ki-be. Eepromot cseréltem, de nem hatott.Lehet ezt próbaizzóval vizsgálni? Nem tilt le, ha nem kap visszajelzést a sorvégtől? Köszönöm!
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