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PANASONIC CH EURO-1 TX-25,29A3 SM

TV - SERVICE MANUAL
Type: (PDF)
Size
2.0 MB
Page
29
Category
TV
SERVICE MANUAL
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  • Also known:
    PANASONIC CH EURO-1 EURO1 TX25 29A3 EURO TX 25 29 TX-25
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Relevant TV forum topics:
Panasonic TX-L42ETW5 Device does not start anymore, stand-by LED lights up red, no SOS error code
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
PANASONIC TX-40DS400E pár másodperc múlva készenlétbe visszaáll (megoldva)
Hello!
Bekapcsolás után hibátlan kép jelenik meg rajta és egyszer csak visszaáll készenlétbe.
A készenléti led 1-et villog. 
Tudja valaki milyen hibakód ez?
Köszi!

Megoldva.
Led sorok cseréje után tökéletesen működik.
Panasonic tx49dx600e nem kapcsol be. 13-as hibakod. Megoldva
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
Panasonic tnpa5349ab kártyán zárlatos Q401, Q402, Q421, Q422, D441, ezek cseréje után mit nézzek még meg
Sziasztok!
A TX42P42UX30E tv zöld ledje 6-ot villant. A 7,5 ohmok jók. A neten az IC502 és Q531 cseréjét javasolják még a kittben. Szintén a neten írják, hogy gyakran újból elromlik ez a kártya rövid időn belül, de megoldást nem írnak erre. Mi okozza ezen alkatrészek elszállását? Mit és hol nézzek még meg? Esetleg érdemes az egész kártyát cserélni? Ha igen, Budapesten vagy a veszprémi vonalon a 7-es 8-as út közelében van valakinek ilyen eladó kártyája? Kérem privátban az ajánlatát. Köszönöm.
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