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Tube TVs
Screen looks dark lack of brightness tv telefunkunivlaca universal s
4
hace 5 años
hace 5 años
Hello people, I ask you, I don't have much idea of something electronic, but not much I have a Telefunken TV that was put on a universal board and from one moment to another the screen looks very dark probe to shine from the flayback but nothing but I can see very little if you can help me
14.048
hace 5 años
Good evening: You have to identify the chassis number of the board to see if there are diagrams on the WEB, although it is a universal chassis, it may not be simple ... But it has to measure tensions, mainly video. Measure the screen to see how much it measures, check or change the capacitor that filters this voltage.
46.781
hace 5 años
hace 5 años
Check filament voltage (5vAC)
Check 180v source voltage, change the leakage of this source
How much is the voltage of SCREEN? ......
What voltage does the SCREEN have both at minimum and maximum regulating its control. ?
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