Question about Samsung HLP5085W 50" Rear Projection HDTV-Ready Television
I have a Samsung HLP5685W, all of the sudden the picture and sound went out. When I unplug the TV and plug it back in I only get a Green light on the front...
I measure 330 volts DC going into the Ballast but 0 volts coming out right before the lamp. Do you think the ballast needs to be replaced?
I am just wondering why the sound isn't working and why I am not getting any kind of flashing lights on the front of the TV
1. Standby LED on Digital Board ON (5V)
2. Power on signal from keypad/remote to Digital PCB.
3. Power ON signal generated by Digital PCB> Analog PCB> PSU
4. All other voltages turn on.
5. Digital PCB tells fans to turn on.
6. Digital PCB tells DMD PCB to turn color wheel on.
7. DMD / digital PCB’S check feedback signals from
fans/ color wheel.
8. If OK, Digital PCB Tells ballast to turn lamp on. LAMP ON.
9. Digital PCB then checks “lamplitz signal” from ballast
for status OK.
It can therefore only be the digital PCB orthe DMD PCB This is the sequence of events that must happen for your set to power up. If I can help you further please let me know.
Posted on Mar 20, 2008
Believe it or not, a bad lamp can cause this too. Have you replaced the lamp? These sets have all kinds of safety circuits built in to prevent major damage. Unfortunately, these circuits sometimes make diagnosis tricky at best. Try a new lamp and keep us posted.
Posted on Mar 20, 2008
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Posted on Jan 02, 2017
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