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I have a samsung S50hw-yb04 with no picture. The y sustain board was bad and I replaced it. now the tv powers on and stays on, but no picture. When room is dark I can see screen flicker one time when i turn the power on, but that is it. any ideas? Vs = 209 v, Vg = 15.3v, Va = 55.1v on both sustain boards
Hi Dan, my name is ***** ***** I can not get a menu. As far as I know, no water physical damage or rough handling. As for surges, I do not know. There is a green LED blinking on the small board in the center, just below the power supply board. I assume this is a buffer. The heat sinks on the right hand side board are warm, the heat sinks on the left side y sustain board are cool to the touch. The chips on the bottom right hand av board are getting really hot. You can almost not touch the large chip close to the fcc connector
are you still online?
No boards on the left of ysus. All one board: LJ92-01601a. I replaced this whole board. Old one had blown triacs etc. The heat sinks on this board are staying cool. The ones on the board on right side ar warm. The main board bn94-02841a is getting really hot.
No, just on and off about 1 second
don't know. PB50 something. tv is sitting at my shop. am at home. 50 inch plasma, no smart tv. Take me about 45 minutes to get it. inside it says S50hw-yb04
model code is PN50B450B1DXZA
Voltages on the LVDS connector are about 3.28 volts on pin 22 and 24 with the LVDS cable not plugged in. Signals are about 2.8 v peak to peak. see picture 2 volts per division, 20 uS per division
With the cable plugged in I get 3.28 volts on pin 22 and 24, but also on 18 and 20. The signals drop to about 500 mV Peak to peak and float about 1 Volt above ground. I took some screen shots from my scope on pin 8 if you have a way for me to send to you