Question about Toshiba 43H70 43" Rear Projection Television
Have an issue with the screen sucking in at all sides like this ) (
Posted on Dec 05, 2007
You lost one of the deflection amps, or have a blown fuse,or an open 2.7 ohm fues resistor on deflection board or possibly all three.Deflection amp module is a stk 392-020 the fuses are marked F702 and F701 for the +32 and _32 volt supplies.
Check all 2.7 ohm resistors R713,720,725,732,739,744 (6 total)
You may also have lost the PA0036 QJ04 IC. This provides the signal called V-wing pin 11 and should be +4.2v to -4.2v in amplitude.This will cause the red and blue to fold over. But the most likely culprit is IC amp, fuse resistors and power fuses
Posted on Feb 04, 2008
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