Question about Toshiba 57H84 57" Rear Projection HDTV-Ready Television
Many of these sets (57H84 etc) had a problem with the "Hyper" board.
It is a circuit in the set that processes all signal from the tuners, and all inputs.
Most of the time this problem shows up when the set is first turned on and after several minutes the picture goes to normal----the delay if you have this problem slowly gets longer and longer.
The hyper board is NO LONGER AVAILABLE-and the only way to correct it is remove it and send it out for rebuild.
There are about a dozen very small "surface mounted filter caps" on the board that dry out and cause the problem.
2 people with this problem were able to remove the board and replace all the tiny caps but IT IS NOT EASY AND NOT A TASK for a do it yourself person unless you have some real skill.
The problem usually looks like noise lines from left to right across the whole or part of the screen---if it started gradually---it is a bad Hyper board.
Let me know by responding with a comment if you need help or advise.
Posted on Aug 04, 2010
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Posted on Jan 02, 2017
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