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PANASONIC CT-27G12V CV UV CHASSIS AEDP280 CT-27G22V APEDP280 CT-20R14V ADP277 QUASAR TP2009DV AMDC277 NA6L SM
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6.9 MB
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TV
SERVICE MANUAL
TV
SERVICE MANUAL
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PANASONIC CT-27G-12V CV UV CHASSIS AEDP-280 APEDP-280 ADP-277 TP-2009DV AMDC-277 CT27G12V AEDP280 CT27G22V APEDP280 CT20R14V ADP277 QUASAR TP2009DV AMDC277 NA6L CT 27 12 AEDP 280 22 APEDP 20 14 ADP 277 TP 2009 DV AMDC NA 27G12V 27G22V 20R14V CT-27G12V CT-27G22V CT-20R14V
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Üdvözletem!
Letöltöttem a mnuálját abban az áll, hogy a tápja hibás. Mérve valóban zárlatot találtam, de a jobb oldali modul a hibás.
2 db RJP30E IGBT zárlatos volt benne. Kivettem őket így megszünt a zárlat. Megpróbáltam próbára beindítani a készüléket aminek elsőre zöldet villant a ledje, de ismét zárlatba ment. Újfent ez a modul hibásodott meg. Azt szeretném kérdezni, hogy van értelme megrendelnem ezeket az IGBT-ket, vagy inkább komplett modult érdemes?
Üdv.: Ízirájder
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
Üdv!
A fenti tv néhány naponként ill. hetenként röpteti a sorvégtranzisztort.
Egyébként tökéletesen működik. A sorvég nem melegszik. Sanszos kondikat
cseréltem.Van valakinek ötlete?
Köszönettel: töröká
Sziasztok!
Kérdésem az lenne, hogy eme készülék videó boárdja ( TNPH0838 ) javítható-e, érdemes-e vele foglalkozni vagy másik kell bele?
A hűtőbordát melegítve szépen beindult és működik azóta is.
Az elkók le lettek tesztelve.
Ha valakinek van ilyen működő boárdja és megválna tőle, kérem jelezze.
Köszönettel: Jani
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