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PANASONIC TX-P42ST30B CHASSIS GPF14D-E SM
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(PDF)
(PDF)Size
8.3 MB
8.3 MB
Page
136
136
Category
TV
SERVICE MANUAL
TV
SERVICE MANUAL
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- Also known:
PANASONIC CHASSIS GPF-14DE TXP42ST30B GPF14DE TXP 42 ST 30 GPF 14 DE TX P42ST30B GPF14D GPF14D-E
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Sziasztok!
Volt barátnőmék hozták.
Állítólag nem lehet bekapcsolni.
Bedugtam, és megy a gép.
Gondoltam kikapcs, szétszed, rossz forrasztások leellenőriz és oké.
Namost megnéztem, jócskán volt ilyen körberepedt forrasztás, megcsináltam,
összeraktam és most nekem sem megy.
Bekapcs, kis szünet, relé kattan és pulzálva villog a stby led.
Van 5letetek?
Vagy még ezenkívül is tele lehet kh-val?
Köszönöm!
Üdv:
Pityesz
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.
A fenti tévét hozták javítani. Az a hibája, hogy besötétült a kép és a fókusz is szétment.Visszanézve a fórumon szinte az összes ilyen tévének a sortafója volt rossz.Ebben is az szarakodhat vagy más lehet a hibája? Kontakthiba nem látszik kondik jónak tűnnek.(azért a kritikus helyeken cserélem őket)Rajzom van róla.Köszi és további szép havazós napot mindenkinek!
Sziasztok, a fenti LCD (ch.: GLP 24), bekapcsoláskor megjön a kép majd néhány mp. múlva el is megy, villogó piros marad a led. Táp, inverter átnézve, kondik mérve jók, ill. próbálva. Ebben külön van a táp és az inverter, (inv.: KLS-EE32PIH12M), háttérvil. jó. Esetleg egy rajz is jól jönne ezekről. Ebben kérnék segítséget, köszönettel.: Imre
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