Samsung Smart 3D

[P.R.Gore]

Hi,
A new Samsung LED 3D TV brought from grey market has no picture & OSD. Back light is on & remote working is normal. Model no is UE48H6200. There is separate tcon board attached to panel. The no on tcon is BN95-01309B. Obviously tcon boost IC is not generating boost voltages required for panel operation even after opening FFCs going to panel scalar boards. Pls guide.   

[downunder]

Do you have sound? Try connecting to a source. If yes, T-Con or Main board faulty. Have you checked the
chip fuse on the T-Con or looked for data on the screen by using a light....you may see movement or OSD
info.

If no sound, check for 13V at pins 11,12 and 13 of CN201. If 13V is missing, blame the Main board.

Bruce

[michael first]

hi,on this t-con there are 3 blue led;if all of them are 'on' the t-con is ok,if any of them is'off' the t-con or

the panel itself is defective.

[P.R.Gore]

Dear downunder, Since back light is OK, no use of looking for menu OSD using light. It is difficult to select a source & check if sound is OK.13V on CN201 is OK. Since remote is effective to put set in stand by I suppose may be MB is OK.
Dear Michel first, As u said there r three LEDs on Tcon, I remember two of them were glowing.In order to operate panel crystals: gamma correction voltages & Von(VGH),Voff(VGL) r required. These voltages r not being produced by boost IC on Tcon,panel is not operative.Again I will come with more information regarding this. There must be some reason behind why third LED on Tcon is not glowing.

[watteau]

Hello,
Had a similar fault recently on a Samsung control PCB,
mine had a large black heatsink, and when removed could see
an IC, number I think was 81224, was blown (had hole in it).
Replacement PCBl cured fault - no problem with the display.
Regards