Samsung PS43F4505AWXXE no picture/sound

[dagav]

The plasma tv have 5V stby, an PS_ON at 3.6V. Other voltages are 0. Suspect the mainboard wont start the psu?
Mainboard partnr; BN94-06194L is hard to find, any one knows about the difference the last letter indicates, found these alteratives; X,B,A,C,Y,W,N, but not the L version?

Regards
Dag Arne

[tom66]

Re: Samsung PS43F4505AWXXE no picture/sound

PS ON must go to 0V to turn on PSU on a Samsung. Sounds like main board might be bad then.

You can try this test: disconnect LVDS between main board and control board and place a jumper across pins 3 and 4 of the test pattern connector on the control board. You should get test patterns appearing on the display.

[dagav]

Re: Samsung PS43F4505AWXXE no picture/sound

Couldnt find any control board, nor any test pattern connector?

[dagav]

Re: Samsung PS43F4505AWXXE no picture/sound

More and hopefully better pictures of the boards

[dagav]

Re: Samsung PS43F4505AWXXE no picture/sound

Tested the psu, without any other boards connected, PS_ON shorted to 0, and VS_ON connected to 5.3V by an 68K resistor, and all voltages could be measured, so the
psu works. Vs a little bit high, 213V instead of 208V as marked on chassislabel, but that maybe caused by no load. Pretty sure this is mainboardfailure. Anyone who knows where to get the mainboard partnr.BN94-06194L ?

Regards

[Ijaz Ahmed]

Re: Samsung PS43F4505AWXXE no picture/sound

Apparently in the new 'F' series plasma, Samsung has embedded the main + control board into one single board. That's why you don't see a separate control board.

Your board is available here: http://www.shopjimmy.com/samsung-bn9...main-board.htm