Question about ViewSonic A90f+ 19" CRT Monitor
ViewSonic A90f+ 19 in.CRT
I have a horizontal wavy type of distortion on the bottom of my screen. It started on the very bottom and has been growing ever since to the point where it now is taking over almost a quarter of the screen.
I checked the cable, changed computers and all settings.
Does anyone know what this is? I have experience with Guitar amplifiers so I can probably handle it if its fixable. Anyone know what this is?
Hi and welcome to FixYa,
Depending on the length of time the monitor has been used, this would often indicate a power supply problem, more specifically a low main B+. Since you are familiar with electronic components & circuitry, you might want to check the big filter capacitor right after the bridge diode on the hotside, likewise the capacitor after the single diode on the secondary side and or the capacitor along the + rail going to the FBT/HOT.
Good luck and thank you for using FixYa.
Posted on Feb 02, 2009
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Posted on Jan 02, 2017
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