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PANASONIC TC-55AS650U CHASSIS LA51
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11.1 MB
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76
76
Category
TV
SERVICE MANUAL
TV
SERVICE MANUAL
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PANASONIC CHASSIS LA-51 TC55AS650U LA51 TC 55 AS 650 LA 51 55AS650U
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Sziasztok!
Pár napja saját tv-nken meghalt először a HDMI 2, majd a HDMI 1 port is. Átdugtam a dvd felvevőt scart-ra, ott jó. Viszont a beltérin csak hdmi van. Nem javítottam még televíziót, inkább a háztartási berendezések mennek. Javítható lehet a probléma, esetleg komplett panel cserével orvosolható csak? Köszönöm!
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
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
Sziasztok!
Telefonos(vezetékes) szakértőktől kérnék segítséget.
A fenti telefonkészülékről hívást kezdeményezni nem lehet.
Kiírja a hívott számot a kijelzőre, majd számlálja az eltelt időt,de ténylegesen nem hívja a számot.
Minden más funkciója tökéletesen működik.
(a telefon hívható kicsöng és beszélhető rajta)
PIN kódos híváskorlátozás és billentyűzár nincs bekapcsolva.
Factory resetet megcsináltam,de semmi változás.
Valakinek valami ötlete?
Üdv:
sziasztok
Panasonic TX-W32D4F (euro 5L sasszé) hiba jelzése folyamatos 2 villogás, pillanatra van nagyfesz , de letilt és villogja a 2 -ket.
kérdezném a pana hibajelzéseket hol találnám, vagy aki tud légyszi segítsen.
Attila
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