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My picture will flicker in and out for a little then stop for a half hour and then start again. its about six years old but i still love it help me if you can
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You have answered your own question, someone needs to open it and find a loose plug or broken solder connection--if it reacts to being tapped on that is the issue- a physical problem inside.
Hook a spare monitor to the video output usually on the back, if picture is okay! the problem lies in the inverter board, "just below the screen" or the backlight behind the LCD display, or the video cable from the screen to the motherboard has come loose from the plugin. But if both show the same symptom it means the Video Graphics Card is defective, normally built into the motherboard.
It sounds like the projector itself has a fault. Sadly it's often uneconomic to repair budget projectors which are out of warranty when the cost of repair is compared to that of replacement. You should speak to Optoma support and see who their local agent is, and then ask for a quote.
Probably caused by a power supply nearing its death.
Try to verify this by placing a portable fan to the side of the set with airflow directed at the vented sides.
If this lengthens the operating time, there is a good chance that some minor components in the main supply have developed low values of capacitance and higher losses which worsen with warmth.
Listen closely at the vents with the sound turned down to attempt to detect a squealing sound while the TV is in its failure mode; if you find this, it is also a sign of power supply trying to die.
A tech equipped with a capacitance meter that measures losses at the same time, could find and replace the weakened parts without a whole lot of labor and little cost for parts.
If it is just a collapsed picture and view as a white horizontal line across your screen. Loose vertical IC connection or is start ailing. Best is to reflux its pin with a new lead or resolder it.
But I don't recommend you do it yourself if you don't have experience doing it.
Go to this site you need a flyback its the only onethey sell for an RCA number 259296 cost less than 50.00 and they provide free tech support so you can do the repair yourself which takes about a half hour. a repair shop will charge abut 400 to replace the flyback. heres the link http://servicemanuals.vstore.ca/
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