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Try and reset all the setting to factory default setting and see whether it helps! If not then there should be a hardware issue that needs to be looked into. It is advisable to contact the manufacturer certified technician if you are still in warranty or a local mechanic if you are not in warranty. Good luck!
If you see separation of colors (red, green) in this wavey line most likely you have problem with convergence circuit. Two convergence amps have to be replaced. They located in a middle of the TV boards attached to big aluminum radiator and they part number starts with letters "STK". I would recommend to let professional with this repair. Should cost you about $250-$300. Regards. Russ.
If this is a rear projection set you needs the convergence IC replaced,
the model # wd52725 indicates it may be a DLP (probably not correct). If its a DLP the problem is within the power supply or video/formatter boards. The convergence ICs should cost between $250 and $400 to have a servicer install them depending on their labor rates.
If this is a DLP model the power supply repair (just capacitors) would cost the same, but if the boards are bad it would be over $500 to have repaired.
Is it worth the repair? Most servicers charge an estimate fee $60-$120
perhaps for can ask them for their labor rates for the IC install instead of having them drive out and tell in person what they could say over the phone.
Compare the repair prices with the replacement price and decide based on, your budget, how old the set is, what you paid for it originally.
You can buy a new 52" proj set for around $1000-1200 DLP or LCD
you will get a 1 year warranty on a new set, but only a 90 warranty on the ICs. If you buy a new set try to buy the 3 or 5 year extended warranty to protect your investment.
hope this helps
on this type of tv each gun is controled by hor.and ver. chip together. it is on the board that controls the convergence of the tv. some manufactors have recalls on problems like this. i dont know if this one does but it may. you can check with mitsub. i do know that this part is about 250.00