|
1999 Toshiba update
An update to my first post.
The set had a couple of issues. Intermittent color, a thin white horizontal line near the bottom of the screen that moved around and a touchy video input jack. I first re-soldered those jacks and took care of that problem.
As to the color issues, since I put the set on my bench and opened it up, the color has been 100%. It has not flickered or gone out yet. And I can't seem to make it fail. The picture looks great.
Now for the horizontal line. It seem to move and disappear when I press on the board; in many locations. I've been looking at questionable solder joints and re-soldering but it has not made a difference. I suspected a transistor that is mounted to a heat sink. The heat sink is not soldered properly to the board. I'm having a difficult time with it. Are these made of aluminum, and if so, can they be soldered? There is a solder pad on the board, so I'm thinking they should be. Any suggestions?
Now for the latest. Occasionally I lose vertical; thin horizontal line in the middle of the screen. Again, tapping around restores the picture. So I'm going to focus my attention on the vertical areas; re-soldering for now, replacing components if necessary. Thanks for all help offered.
|