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Check C2P05[ location on convergence board]. This is a 16volt 100Mf cap that is bad. And check out C2V29 [cap value is 16volt 22 Mf.] And still while you're at it, resolder the pins on the convergence ICs.Should fix your TV!
yes it can be fixed depending on your model number if its the VS50605 they have a kit to repair the PIP module which controls vertical sync (Rolling) or you can bypass the module to correct it but you would lose the PIP function. Let me know if you need more info.
I have seen this many times. There is a 9 volt regulator on the small signal board that causes this. The regulator goes bad and the 9 volts starts dropping, especially at start-up when the regulator is cold. If the voltage is below 8 volts then the picture gets dark and the vertical becomes unstable, with the picture squeezing down and/or rolling. As the regulator warms up the voltage starts rising back towards 9 volts and the symptoms start clearing up. There are 3 regulators in a row on the board and the regulator in the middle is always the bad one. Replacing that regulator should cure your problems but it should be replaced by someone experienced in servicing Mitsubishi projection TV's because pulling the chassis out is quite tricky.