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Üdv!
A gép bekapcsolás után zöld led nagyon sűrűn viloog majd zöld led megmarad. Táp megy, de a háttér nem, Bl onon nincs semmi. Egy idő után kiáll 13 villogásra. A mainen sincs pl 12v amit egy kapcsoló táp állít elő, de az ic itt sem kap enable jelet.
Main száma TNPH1160. Esetleg eladó vagy ötlet a javításhoz?
 A hiba az emmc újraírásával megoldodott

I got a broken Panasonic that will not start. It does show the red front LED and the power supply delivers 5,3Volt standby. Only when you try to start by remote or push button on the set it will only flash the red LED and does nothing more.

After a while, the red LED will start to flash repeatedly 13 times.

Since the 5,3 Volt standby run straight to the main board I wanted to check there but no luck finding the schematics.

Any insights?

After several attempts the TV finally started and I could enter the menu screen. Normal functionality. But after switch off it takes again several attempts. What is going on ?

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

Sziasztok és BUÉK Mesterek! :) Ismét szeretnék egy kis táv-táv segítséget, levelezek már rágóta a Májsztróval tv-k miatt, most van egy ami feladja a leckét, én sajna nemtudok rá mit mondani. Ha megtennétek, h. meglesitek a linket, és akár ide akár oda írtok, azt megköszönjük :) http://elektronline.hu/wwwboard/thread.php?sorszam=425616&reply=0 Üdv: Pityesz