blaupunkt tv 43" backlight is ok but no pic

[layad]

hi , i hate one board tv as i can not figure out how it works , the backlight is on but no picture , 12v on the t-con fuse on both sides , changed the t-con but still the same , is there any way to find out the fault??

[budm]

Re: blaupunkt tv 43" backlight is ok but no pic

How many cables does it have between T-CON and the LCD panel/ If it has two then try having it connected one at a time to see what you get on the screen.

[layad]

Re: blaupunkt tv 43" backlight is ok but no pic

How many cables does it have between T-CON and the LCD panel/ If it has two then try having it connected one at a time to see what you get on the screen.

hi there i have two cables , tried that before , did not help as when i disconnect one of them i get half screen white color and the other half no image with back light on

[layad]

Re: blaupunkt tv 43" backlight is ok but no pic

called blaupunkt customer service to ask for firmware , been sent to me within 30 minutes , they are 3 files , put them on usb and started to fix the problem , the led blinks rabidly for hours and hours with no stop , logo start to show on display on and off(after interrupting the process) , the software didnt go thro , can i use one of these files to flash the eeprom directly?

[Demonata08]

Re: blaupunkt tv 43" backlight is ok but no pic

hi , i hate one board tv as i can not figure out how it works , the backlight is on but no picture , 12v on the t-con fuse on both sides , changed the t-con but still the same , is there any way to find out the fault??

Well if you replaced the tcon, its getting a steady backlight. and the new tcon is getting the right voltage. i would believe its the main board.

[budm]

Re: blaupunkt tv 43" backlight is ok but no pic

called blaupunkt customer service to ask for firmware , been sent to me within 30 minutes , they are 3 files , put them on usb and started to fix the problem , the led blinks rabidly for hours and hours with no stop , logo start to show on display on and off(after interrupting the process) , the software didnt go thro , can i use one of these files to flash the eeprom directly?

So what is the condition of the TV right now? Back to the original symptom or worst now since the FW updated failed.
There should be many Voltage test points (VCC, VCOM, VGL, VGH, ....) on that T-CON board that you can check but we need good clear straight shots of the T-con board to see if we can locate the test points.

[diif]

Re: blaupunkt tv 43" backlight is ok but no pic

The file types and size should tell you if they can be programmed off board.

[layad]

Re: blaupunkt tv 43" backlight is ok but no pic

So what is the condition of the TV right now? Back to the original symptom or worst now since the FW updated failed.
There should be many Voltage test points (VCC, VCOM, VGL, VGH, ....) on that T-CON board that you can check but we need good clear straight shots of the T-con board to see if we can locate the test points.

before starting the firmware update there was no display just back light , after the updating fail the screen starting to show the blaupunkt logo (on and off) then goes back to the previous condition

[layad]

Re: blaupunkt tv 43" backlight is ok but no pic

The file types and size should tell you if they can be programmed off board.

they are all over 150 mb

[layad]

Re: blaupunkt tv 43" backlight is ok but no pic

Well if you replaced the tcon, its getting a steady backlight. and the new tcon is getting the right voltage. i would believe its the main board.

yes thats right but i would like to fix it without buying new mainboard