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I received a Hitachi 57SWX20B (57" HDTV) that has no picure or sound. The previous owner said...
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Problem for Hitachi 57SWX20B 57 in. Rear Projection Television
Hitachi Ultravision 57SWX20B blue convergence
By vittorio_rom on Jul 15, 2009
Hitachi Ultravision 57SWX20B blue convergence issue.
1st issue on this TV. It's been great until now.
Problem is the blue convergence. Red and green are perfect. Blue is off by a lot in a wavy type pattern. The vertical adjustments are perfect for all colors. Horizontal adjustments (moving the lines up and down) are good for red and green and unresponsive for blue which is what's needed to "fix" this. I suspect that a circuit involving the blue gun has failed. Hopefully this will not cost much to repair. I would like to know what's involved in fixing this as i may be able to tackle this myself as well as an estimated cost to repair by a reputable local repair place. Unfortunatly i don't have a service manual for this TV.
Vittorio
1st issue on this TV. It's been great until now.
Problem is the blue convergence. Red and green are perfect. Blue is off by a lot in a wavy type pattern. The vertical adjustments are perfect for all colors. Horizontal adjustments (moving the lines up and down) are good for red and green and unresponsive for blue which is what's needed to "fix" this. I suspect that a circuit involving the blue gun has failed. Hopefully this will not cost much to repair. I would like to know what's involved in fixing this as i may be able to tackle this myself as well as an estimated cost to repair by a reputable local repair place. Unfortunatly i don't have a service manual for this TV.
Vittorio
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