Question about Samsung HP-R5052 50 in. Plasma HDTV
Since you still have audio, the main power supply is functional unless your set does not have a separate high voltage power supply for the plasma tube.
Pull the AC plug and allow the set to sit for at least a few hours, overnight is best. Since these are customarily separate supplies (one for the low-medium voltages, another for the high voltage), open the lower rear of the set where the hardware is concentrated. Look for an assembly that seems to be related primarily to the plasma tube; this will be the high voltage supply.
If you do not find a separate board, the high voltage supply that has failed will be combined with the lower voltage sources.
In either case, you need to call Samsung with your model number in hand and tell them you need a replacement power supply for that set. 9 years? They may not have any but may offer to accept the supply for repair or refer you to an independent services company that specializes in repair of subassemblies.
If you have no burn-in (shadows, when the power is off) of the plasma tube's phosphor, it is still worth repairing. Frankly, I'm somewhat amazed that this failure didn't happen 5 years ago.
Power supplies in general do not need any alignment so unplugging cables (and these are normally of different sizes and not interchangeable) and removing the board mechanically is something about anyone can do.
If they offer to sell you a new supply, expect <$200 US; a repair could run to $75-$150 US.
If you can find a new one or a 'pull' from a working set, don't pitch the old one out, it will still be repairable.
'Pulls' can often be had here"
Posted on May 26, 2009
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Posted on Jan 02, 2017
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