This is a very hard call my friend, without being there to test the set. If there is no power or standby power light I would say first check the Main AC fuse. Anytime you go and adapt a unit to another unit, Yes even though you use a transformer to step down or step up the input voltage, your looking for big trouble. Older solid state sets could handle alot of voltage differances, but these new digital circuits? Not on your life! They are so sensitive to voltage spikes. this is why every single one of them should be connected to a surge and or voltage suppressor. One that warrantys the device. I( would check the AC input circuit first in this case. If you have no solid state and or digital repair experience, Please leave it to the pros as you can cause more problems and cost you alot more in the long run. Good luck to you and please, keep us informed of your progress and or if you had it repaired and what it took.
"Those who do not know their opponent's arguments, do not completely understand their own".
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