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HP w2480h monitor just flashes red, green and blue

Monitor is 4 years old

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Posted on Jan 02, 2017

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SOURCE: My Epson C48 printer has stopped working

http://files.support.epson.com/pdf/cx48__/cx48__qr.pdf

There is a whole section devoted to troubleshooting the different lights, and if they flash or not. Without more of a description from you I was unable to discover right away which error it was, but you should be able to find out no problem with this manual.

Posted on Apr 08, 2010

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SOURCE: my HP 2480h monitor flashes red, green and blue

I am not familiar with your particular monitor. However, on many monitors when the screen flashes like this, it's a "burn-in mode" that is used to test the monitor at the factory.

1. Your firmware in the monitor may have glitched. Try the solutions offered by the other people here and see if you can reset the unit. If those simple solutions don't work, try suggestions below.

2. You may have one or two stuck buttons (they may be stuck or shorted). Try taking the monitor apart and unplugging the button board. If the fault stops, then there is a problem on the button board (control board). In many cases, replacing one or more of the switches will fix the control board. You will need spare switches and a soldering iron. If you have an Ohm meter you can measure all the switches and replace those with low resistance. Note, you may have to correct the switches and then implement one of the other solutions presented here in the other comments.

3. The chip that receives the signals (on the main board) from the control buttons may have gone bad. If this is the case, the only way to repair it is to replace the board, which is likely not going to be cost effective even if HP did have spare parts.

4. It's possible that the capacitors on the power board are letting enough noise through to mess up the main board. If they look domed, vented or cracked, they should be replaced. You will need spare capacitors of the correct values (stamped on the side of the capacitors), a slodering iron, solder and perhaps some solder braid or a solder ******. If you do this yourself, make sure you install the new capacitors with the correct polarity or they can pop (there is usually a stripe down one side indicating negative, and a corresponding mark on the board).

Posted on Oct 25, 2012

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