Question about Televison & Video
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Posted on Jan 02, 2017
You may just have to make a different kind of adjustment.
This is what is called a direct view or crt type TV.
Inside on the main board (see attached photo) is the "flyback" transformer.
Note the two little controls embedded in it----top one is focus--leave it alone.
Lower one is SCREEN and a very slight upwards or right adjustment will bring the overall brightness up.
You want to adjust it just till with brightness on set all the way up you have a normal picture.
Too much and you get excessive brightness and trace lines and or further too much shuts set off.
Some sets have two holes in back of cabinet and small tool can get in and adjust the LOWER or screen control and others the back has to be removed.
Lay set face down on padded surface, remove back screws and set upright---do not touch anything inside with set on when you make the adjustment--control is plastic and a plastic tool a good idea--I have used regular screwdriver but know what not to do.
Let me know if you have questions 98% chance just need the Master Screen bumped up a little bit.
Posted on Mar 12, 2012
Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electro-medical.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.
Posted on Dec 27, 2016
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