Question about ViewSonic Televison & Video
TV has worked very well for several years. Now I have sound but no video on any of the inputs. Any simple solution? I have heard that this is a common problem with this model. Serial number is PJL052002320 and it was manufactured in May of 2005.
I started back in the day of tubes. A family would have one set and it would be a 19" black and white. There are different resolutions now. The components probably do work, but, they don't pass the 480i signal. The satelite converter's analog signal needs to be set to 480p and the DVD needs to be set to progressive if it does have that setting. If the DVD is not a progressive scan DVD, then, the only inputs that it will show on is the analog signal. Some of the dish converters have a switch on the face for changing the resolution. If yours doesn't then put it in an analog source and go to the menu and change it there. Then move it to the component input. Hope this helps.
Posted on Jun 24, 2007
Simplest thing would be that your component cables are not HU'd correctly. Having them reversed would do this.
Posted on Feb 13, 2008
Zdenko did an excellent job. Voltage regulators and
the capacitors on the main boards and in the power supplies are always
Some times you can narrow down the culprit buy purchasing a can of
freeze spray. Let the TV warm up and try freezing suspect components to
see if this causes a reaction. Thermal problems can often be found in
Of course, if you're not able or willing to replace components on the circuit boards, you can always replace the main board or power supply board after determining which is causing the problem. These parts should be available at your local Viewsonic service provider at a reasonable price.
Posted on Feb 14, 2008
Got it. I was the 'guest' who posted that I had the same problem. Not the CTRL board as I earlier thought. It boils down to the Y-SUS board (right hand side as you face the back of the display) In the upper-upper left hand quadrant you'll find a small capacitor labelled "C70".
This is the naughty one.
You can verify this by removing the back of the display, powering up and then with a small extended flame lighter, GENTLY warming C70. All it takes is about 2 to 3 seconds and the display will steady up just like always.
C70 is a surface mount capacitor, most likely 33uf at 25 volts. Haven't confirmed this yet. Will post again when I've affected the repair on my VPW505.................
BTW: This is not something you want to attempt unless you have experience with electronics. No.....really!
Posted on Dec 30, 2008
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