Service manuals, schematics, eproms for electrical technicians
PANASONIC TX-28LD1P
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(RAR)
(RAR)Size
1.7 KB
1.7 KB
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Category
TV
EPROM
TV
EPROM
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Good luck to the repair!
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Looking for similar panasonic manual?
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- Also known:
PANASONIC TX-28LD-1P TX28LD1P TX 28 LD 28LD1P TX-28LD1P
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Relevant TV forum topics:
SZÉP JÓ ESTÉT.segítséget kérek tőletek panasonic tx 29 as 10p tévé ki bekapcsolgat a relé kattog ha vissza jö a kép,van ugy hogy 2percig jó utána kattanás elmegy a kép ,és utána relé kattanás és vissza jön . előre is köszönöm
panasonic 32ps 12p táp nemindul el,cicereg és 65 volt a sorvégtranyon,sorkimenő képeltérítő ic cserélve,táp ic is kérem segítségeteket.üdv köszi segítségeteket , de ezt jó megszivtam atápba 130 voltos 3 lábu kerámia ref volt rossz .
Szevasztok!
Az igazság, hogy nincs még itt a gép, csak szeretnék fejben kicsit előre dolgozni.
Az ügyfél elhozta a márkaszervizből, mert egy hétig semmi infót nem adtak a javítással kapcsolatban.
Persze nekem karácsonyig meg kéne javítanom.
A jelenség a következő: a kép felső része fekete, középütt világító csík, alul képtartalom.
A függő IC LA7876N.
Na most jön a vaprosz: lehet, hogy megúszom ezzel, vagy a tápellátásának megjavításával esetleg a függö eltérítő tekercs adta meg magát?
Azért lenne jó, ha kapnék erre választ, mert nem akarnám, hogy még egy ekkora monstrumot kelljen ide-oda cincálnom, kerülgetnem esetleg hiába.
Csak az alaplapot hoznám el, így tervezem.
Várom megtisztelő válaszaitokat. :-)
Üdv!
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
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