I am having the same problem as a few other people, my 60" proscan model # ps60690 chasis # ptk188ac will not turn on. the power button in the front lights up three times but nothing happens. can someone please help me if you have any info at all thank you very much
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Re: tv won't turn on
Usually this problem is caused by part failure on circuit board. Most often in power supply or deflection circuit. You will need test equip. and soldering/desoldering tools to fix this set. Most repair services charge 275.00-475.00 to do this repair on a PS60690. Crate is removable by removing rear cover, disconnecting spk. plugs and keyboard plug. Loosen two screws and whole thing slides out. This can save you service call fee.
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Actually, the set has the PTK188AC chassis. This is a very uncommon chassis. The most common reason for the set not starting in that chassis is a shorted high voltage splitter. That is the large black box inside the set that has 5 thick red wires in it. When the set is turned on, the computer senses the short in the high voltage circuits and immediately shuts the set back off. When the set is on, that box has dangerously high voltage in it so it should only be replaced by a qualified tech familiar with the high voltage splitters in RCA projection sets.
You can get ahold of PTS Corp to get the board rebuilt, how do you know the transformer is bad? Sometimes the HV distribution block shorts out. Can you hear the HV "Squeak" 3 times when you press power, if so probably bad transformer. The whole board wont be available new, might be able to pick up a rebuilt one, will have to be careful with the HV leads.
Most likly this set has two or maybe trhee problems .. first one sounds like a main power filter is open or the main power supply is at fault. the second coulkd be related or the cause of the first problem and could be shorted convergence ICs. the third could be a bad flyback transformer and good luck if thats the problem.. if the sets 10 years + in age, i would think very seriously into investing much to get this one going again.