Hello; This set uses just a standard 3 pin power cord used on PC's an a lot of other things No AC adapter is used on this model. If your set doesn't work, there is a very common failure. This is from my other post
Hello; I am John at J D Electronics in Poland, Maine. I have now
repaired 81 of this same model in my shop or PCB mail in's. The set may be dead always or
work intermittently. There are 2 versions of this piece of junk, but I
have only seen this one. They all have 2 to 7 capacitors that fail on the
power
supply board that are just above that red chopper transformer. The are
labeled C233 and C234 and others. These first 2 are 3300 ufd at 10 volts
and 105 C temp
rating. You can buy these for about $1 each from Digi-Key Electronics
plus $12 shipping. There are some cautions worth
mentioning. Make sure the set has been unplugged for a day or more
before starting the disassembling. It is VERY important to keep the set
face down on a soft surface when doing ANY work on the set. This crappy
designed set has a glass faceplate that will fall down if you don't
have it face down when all the back screws are removed and it is very
hard to put it back into position if it falls. The bottom plastic
speaker strip has a million screws to remove both from the bottom edge.
Then take out all the screws for the metal back and unplug
the speakers. The connector wires to the speakers will not just pull
off without you pressing on a side release pin for each of the 4 wire-
Stupid design again!. If you are not able to solder or test these caps ,
you
can send the board to me with $44.00 to replace and/or test up to 7
caps this includes USPS Parcel Post return shipping. I accept only cash
or USA postal
MO. There is NO Warranty on this repair. It is a better than 80% chance
this will fix your set. You must call me first at 207 998 5687 EST 9-5
only. Good Luck! John
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