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MasterP
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Last Activity: 02-08-2011, 02:57 PM
Joined: 01-20-2011
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  • MasterP
    replied to Viewsonic Q19WB
    in Troubleshooting Computer Displays
    Re: Viewsonic Q19WB

    Ok found the problem. Got to looking and it appears I bent a pin for the video cable on the logic board

    Having been down this route with warehouse-bought CPUs at work I'm pretty sure I can't fix it without a pin straighten tool, not without breaking it anyway.

    Anywho, thanks for the help.
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  • MasterP
    replied to Viewsonic Q19WB
    in Troubleshooting Computer Displays
    Re: Viewsonic Q19WB

    All were Panasonic. 10 were FM, 1 FR, 1 M.

    Below are links to pics for my logic board. Due to size restrictions I've uploaded them offsite.
    [URL="www.n40compost.com/images/100_0255.JPG"]www.n40compost.com/images/100_0255.JPG[/URL]
    [URL="www.n40compost.com/images/100_0242.JPG"]www.n40compost.com/images/100_0242.JPG[/URL]
    [URL="www.n40compost.com/images/100_0268.JPG"]www.n40compost.com/images/100_0268.JPG[/URL]
    [URL="www.n40compost.com/images/100_0275.JPG"]www.n40compost.com/images/100_0275.JPG[/URL]...
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  • MasterP
    replied to Viewsonic Q19WB
    in Troubleshooting Computer Displays
    Re: Viewsonic Q19WB

    No, it's nowhere near that.

    Below is a pic of what it looks like. Note that the vertical bars are NOT present when a normal picture (ie my background) is on it and the background hue sort of flows from right to left.

    Aside from a few flakey pixels that unstick with a light tap, the screen itself should be fine....
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  • MasterP
    replied to Viewsonic Q19WB
    in Troubleshooting Computer Displays
    Re: Viewsonic Q19WB

    First thing I checked was the cable. Same problem using a different cable on a different computer.

    Isn't the pinkish hue supposed to only affect white and bright colors? Is there any way to test the CCFLs without canniablizing another LCD?
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  • MasterP
    replied to Viewsonic Q19WB
    in Troubleshooting Computer Displays
    Re: Viewsonic Q19WB

    I replaced all but the biggest cap and reset the monitor settings but still have a heavy red hue.

    Any ideas?

    Could the larger cap be causing that?
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  • MasterP
    replied to Optiquest Q9 Board "ILPI-025"
    in Troubleshooting Power Supplies and Power Supply Design
    Re: Optiquest Q9 Board "ILPI-025"

    To followup, the sizes you listed are identical to mine.

    Thanks for the links. I've quoted you over in my thread for thoroughness.

    Really appreciate your help.
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  • MasterP
    replied to Viewsonic Q19WB
    in Troubleshooting Computer Displays
    Re: Viewsonic Q19WB

    For thoroughness, below are the replacement parts for my model of Q19WB.



    Again, many thanks mockingbird....
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  • MasterP
    replied to Optiquest Q9 Board "ILPI-025"
    in Troubleshooting Power Supplies and Power Supply Design
    Re: Optiquest Q9 Board "ILPI-025"

    As promised:

    1) C501 - Su'scon 470uF 25V SG105°C 0705(M)
    2) C817 - Su'scon 470uF 25V SG105°C 0705(M)
    3) C815 - Su'scon 1000uF 25V SG105°C 0703(M)
    4) C818 - TEAPO 1000uF 10V SY105°C 0703 A3T1
    5) C820 - Su'scon 47uF 25V SH125°C 0701(M)
    6) C827 - Su'scon 47uF 25V SH125°C 0701(M)
    7) C807 - Su'scon 47uF 25V SH125°C 0701(M)
    8) C702 - Su'scon 470uF 25V SG105°C 0705(M)
    9) C713 - TEAPO 10uF 25V SH105°C 0643 A3T2
    10) C701 - TEAPO 220uF 16V SH105°C 0704 A3T2...
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  • MasterP
    replied to Viewsonic Q19WB
    in Troubleshooting Computer Displays
    Re: Viewsonic Q19WB



    It'll be Saturday afternoon but sure....
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  • MasterP
    started a topic Viewsonic Q19WB
    in Troubleshooting Computer Displays

    Viewsonic Q19WB

    Classic 2 second on then off. I can usually turn it on/off a few times and it'll eventually function normally. This morning I finally got tired of dealing with it and pulled the thing apart. Below is a high-res of the power board.

    The only capacitor that was obviously bad was C815 (1000uF with blue coat in center) which had a bulging top. I swapped it out with Radioshack's finest (garbage) just to see if that was the problem. Now I get a grainulated picture with a heavy red tint but it does appear to be (somewhat) stable.

    First and foremost, does anything else stick...
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