Question about Mitsubishi VS-45607 45" Rear Projection Television

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Mitsubishi VS 4552A

Mitsubishi VS-4552A Build Date Sept. 1994 There is a wide blue V in the middle of the screen top to bottom and blue-ghosted images during normal viewing. bring up the convergence adjustment screen, red & blue vertical adjusts fine, red horizontal fine, blue short and bowed, looks like a blue smile & the word blue bowed and fuzzy. That is it, otherwise my VS4552A mitsubishi build date Sept. 1994 Performs fine.

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Re: Mitsubishi VS 4552A

One of your convergence IC's has either cracked loose or burned out. The IC will have to be resoldered or replaced and then the convergence circuits realigned. If you do not have experience in repairing convergence circuits then have a qualified tech handle it for you. This is by far the most common failure in the projection sets and a good tech can have it fixed in about an hour and a half. I charge $150 for that but shops in your area will vary, so call around.

Posted on Jul 31, 2007

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This symptom seems to be a vertical Sweep fault cause what happens is theres a protection circuit in this set that activates when it sees theres no verticle sweep, it shuts off the picture on the set so that the tubes dont get lines burnt in the middle and become damaged. If you know your way around a TV set then you could locate the vertical output IC and resolder all its pins first as well as anything else in that circuit that looks like a cold solder connection. Then i9f it still does the same thing I would just replace the verticle output IC as well as the B+ supply capacitor off the flyback xformer for the sweep dirived power supply. Now if your not knowlegeable about these HI VOLTAGE circuits my advice would be do not attempt the repair yourself as you could get hurt and /or cause more problems with the set as there are no tubes in this set to test except the picture tubes. Contact Mits. at this #800-332-2119 or look in your owners manual for a contact #. Good Luck.

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