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PANASONIC 28PK1F

TV - EPROM
Type: (RAR)
Size
557.0byte
Page
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Category
TV
EPROM
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    PANASONIC 28PK1F 28 PK
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Relevant TV forum topics:
Panasonic TX-26le8p lcd bekapcsoláskor nincs kép
Sziasztok! Ez a készülék bekapcsoláskor elég gyakran kép nélkül indul, csak lila fény látható, hang van.A kijelző aljának megütésére megjőn a kép és marad is.Menet közbeni mozgatásra van amikor kimerevedik a kép.LVDS kábel mozgatására nem reagál. Ennek a hibának a megoldásában kérném a segítségeteket. Üdv.: Laci
Panasonic TX-L42ETW5 Device does not start anymore, stand-by LED lights up red, no SOS error code
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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
Panasonic TX28CK1P
Üdv mindenkinek. Javítom a fenti tv-t.A hiba a következő: bekapcsolom és utána csak a készenlét led villog.Néha (kb.100-ból egyszer)beindul.Amikor nem megy akkor is 1 másodpercre elindul a sorvégfok de le is áll. Kondikat ellenállásokat átnéztem.Ha van tipp szívesen venném. köszi
Panasonic Z7 sasszi
Sziasztok! Kis segítség kellene a fenti készülékhez 21 "-os .Lehet volt már itt is róla szó azért leírom mi van. A tulaj elmondása szerint az utóbbi hónapokban a tv bekapcsolás után nem mindig indult.Ezen ő ütögetéssel segített és indult végül egyszer menet közben állt meg és azóta csak kis led villog.A készüléket kibontva komoly kh-t nem találtam és zárlatos dióda illetve semmi sérülés nyom .A nagy táp is beindul de le is áll. A sorvégtranyón is mérek feszültséget egy pillanatra és ennyi.Van valakinek ötlete? Előre is köszi!
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