Service manuals, schematics, eproms for electrical technicians
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TV
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TV
EPROM
If you get stuck in repairing a defective appliance download this repair information for help. See below.
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Good luck to the repair!
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Relevant TV forum topics:
Üdv. a Kollégáknak!
A fennti TV memória tartalmára lenne szűkségem, ha valaki lenne szives segiteni.
Meg szeretném kérdezni, hogy pendriveról be lehet tölteni a programot, vagy csak eeprom programozóról.
A TV alaplap száma: TP.SIS231.P83, DISPLAY tipusa:CX315DLEDM.
Újraprogramoztam a memóriát.
A fennti TV memória tartalmára lenne szűkségem, ha valaki lenne szives segiteni.
Meg szeretném kérdezni, hogy pendriveról be lehet tölteni a programot, vagy csak eeprom programozóról.
A TV alaplap száma: TP.SIS231.P83, DISPLAY tipusa:CX315DLEDM.
Újraprogramoztam a memóriát.
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
Hi,i have this sansui lcd sv-3050 that i am fixing if i power it on it takes some time to light up and if it manages will shut down in 30 secs.i have changed some caps(power supply)which were bulged.i am suspecting the inverter board (dafron v144-48v1448.001/f)is there a way to bypass or remove the protection on the inverter board and ic it advisable?
Hello! I would be interested if you could find an update software format "pkg" for this TV. From what I searched, I only found upg. Thanks!
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