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PANASONIC TX-L42D25B 26B CHASSIS LA02 LCD TV SM
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8.8 MB
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86
86
Category
TV
SERVICE MANUAL
TV
SERVICE MANUAL
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PANASONIC CHASSIS LA-02 TV TXL42D25B 26B LA02 LCD TXL 42 25 26 LA 02 TX L42D25B TX-L42D25B
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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!
Nálam van ez a szépség :)
Életemben nem szedtem még szét Z5-öt, sőt azthiszem nem is volt nálam ilyen TV :)
Tudnátok tanácsokat adni mire számítsak? :)
Képcső brutál jó, A51EFS videocolor :)
Annyit csináltam így este, h. hátlap leszed és ránéz...
C562 elkó kezdi a belét szép lassan kitolni, plusz ha bekapcsolom a TV-t, akkor valami nyögésszerű hang van, majd síri csend. Csak azt remélem nem trafós lesz.
Köszi előre a segédleteket!
Üdv:
Pityesz
Sziasztok!
Fenti masinát bekapcsolva iszonyatosan gyorsan villog a stby led.
Semmire nem reagál...
Valaki esetleg ezzel találkozott már?
Köszi Zoly
"(olyan fórum téma megnevezést/elnevezést válassz, ami beszédes, minél pontosabban illeszkedik arra, amivel kapcsolatban írsz. pl: ORION LCD PT26S chassis 17MB12-2 nem indul )
Az pl. nem elég, hogy "LG RE" vagy "Cuccok!!!" és így tovább... Comprende!?"
A címet egészítsd ki.
Kalex
Tiszteletem Mindenkinek!
Fentebb említett TV-hez képernyőt keresek, illetve ha nem találok, akkor bontásra ajánlom...
Eredetileg indításkor a 10-es hibakódot villogta, a logikai panelről az 5, és a 3,3V tápfeszültség hiányzott. Javítása után készülék rendben elindult, de kiderült, hogy a képernyőn, némely COF is gatya volt, hiányzott a kép jobb oldala... :(
Fentebb említett TV-hez képernyőt keresek, illetve ha nem találok, akkor bontásra ajánlom...
Eredetileg indításkor a 10-es hibakódot villogta, a logikai panelről az 5, és a 3,3V tápfeszültség hiányzott. Javítása után készülék rendben elindult, de kiderült, hogy a képernyőn, némely COF is gatya volt, hiányzott a kép jobb oldala... :(
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