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Trinitron- hourglass? i inherited a sony trinitron from my frine and the picture is like an hourglass, te left and right side of it are backed out in a smi cirle pattern. any suggestions?
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If you are familiar with TV repair, have electronics basic knowledge, good soldering skills and tools then check dry (cold) soldering joints at D board of this TV. Resold all lose connections there and check picture. Still no joy then you need to replace D board.
The problem with this model is the large parts due to poor wave
soldering. Locate the transistor Q605. Using a
small wattage soldering iron melt the solder and add a little solder to
all the large parts in the area. Small wattage = 15 to 30 watt. Stay
away from the surface mounts they are not the problem. I resoldered the
following: D647
Q605 C690 D645 D620 R691 Q691
These parts are
located on the main board, the one the power cord connects to.
Carefully press the clip on the left side of the board (as you look at
it from the rear of the tv) carefully pull the main board back and out
of the rails. You will find the parts on the right side of the main
board about 2 inches over 2 inches down.
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