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PANASONIC 28PK1F
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557.0byte
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Category
TV
EPROM
TV
EPROM
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PANASONIC 28PK1F 28 PK
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Üdv. mindenkinek!
A fent nevezett készülék nem hangol le egyetlen csatornát sem. Kapott egy új tunert, de így sem. Tuner feszültségek rendben vannak, SDA-SCL is elér a tunerig. Egyik pillanatról a másikra lett ilyen baja. Sajnos a tuner csere sem oldotta meg a problémát, valószínűleg alap probléma (CPU) hibát gyanítok. 1.269 szoftver fut rajta.Találkozott e valaki már ilyennel? Esetleg bontott, jó alaplapot keresek. LA35 a belseje, main: TXN/A10TLUE.
Köszi!
A fent nevezett készülék nem hangol le egyetlen csatornát sem. Kapott egy új tunert, de így sem. Tuner feszültségek rendben vannak, SDA-SCL is elér a tunerig. Egyik pillanatról a másikra lett ilyen baja. Sajnos a tuner csere sem oldotta meg a problémát, valószínűleg alap probléma (CPU) hibát gyanítok. 1.269 szoftver fut rajta.Találkozott e valaki már ilyennel? Esetleg bontott, jó alaplapot keresek. LA35 a belseje, main: TXN/A10TLUE.
Köszi!
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
Tisztelt Kollégák!Panasonic TX-L32C10P.Ez a készülék kb:2 mp-ig működik majd leáll és csak a készenléti led villog,mig rá nem inditok a távval mert akkor az is eltünik.A ccfl 2 csatiját lehúzom szintén.Az invertert lecsatlakoztatom ua.A táp 5.6V,12V,24V rendben,egyedül a 15V helyett mérek kb:17.5V-ot.Eme feszt beállitó zener ic-t ,SI-3120j ugyan pár adaton fix15V-nak irják,de azt hiszem itt megfelelő ellenállásokkal 17.5V-ra van beállitva.Nem tudom kövesem e még ezt a vonalat?!Ha ez magas elvileg az "overvoltage protection"áramkör leállithatja az egészet.A táp tipusa :PSC10285B.Jó lenne belepróbálni egyet.Az túl egyszerű lenne,inkább egy jó ötletet várok.üdvözlettel osvath.
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