Question about Hansol Multitech 920p 19" CRT Monitor

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19" hansol 920p monitor

Hi
i have recently moved house and had`nt used my pc for about 3 weeks. i set it up to day to find that the desktop does no longer cover all the screen. there is a 1 inch gap down the left and right sides of the monitor . the top and bottom of the desktop are ok. I.E the top is at the very top of the screen and the same for the bottom. its just down the sides. i have been into the menu settings on my monitor and tried to expand zoom but it is on max. i have also installed the driver disk that came with the monitor but still have the same problem. so basically i have something like a 17 inch screen on a 19 inch monitor. i have also tried adjusting the display settings but still have problems. can any one help me please as its driving me dappy. many thanks.
Colesy.

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  • colesyboi May 21, 2008

    hi

    thank you both for getting back to me so quick. I think if it is something internal then i may aswell just buy a new monitor. been wanting a flat screen monitor for a while now. this monitor is about 5 years old so guess its done its job, its just annoying that the usual thing happens when you store something electrical; it packs up. once again thank you so much for your help.

    all the best,

    CoLeSy

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Hi Colesy, it could be that your horizontal driver (IC CHIP) is going bad. There are two IC's that expand the picture on the screen. One for horizontal and one for vertical. When one of them starts to go bad, the screen starts to "squeeze" in on the top/bottom or sides. Eventually, there will just be a small line in the middle from top to bottom. You may need this IC replaced. I am not sure on the cost of repair should you have it done at a shop, but it could be prohibitive and you may just end up buying another CRT. Check around.

Posted on May 21, 2008

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Hi,

To my knowledge, it is not the zoom that has to be adjusted but rather the horizontal width, zoom would expand all (to, bottom & both sides) whereas your only concern are the two sides.

Should the horizontal width not fully expand, then there is an internal problem with the horizontal deflection circuitry which could either be the yoke, a capacitor or shunt diodes. In certain instances, a below normal voltage at the mains or the internal power supply could also cause this.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Posted on May 21, 2008

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The backlight power supply in the H950 series suffers from a manufacturing defect. Hansol might replace the unit even if it's not covered by warranty anymore. Contact them.

Otherwise (and if you have electronics skills), replace the electrolytic caps in the monitor's power supply. Take proper high voltage precautions!
  • Disconnect mains
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  • Remove back cover (snap-in, difficult to open without minor damage) - be cautious: front buttons are connected using a rather short cable, do NOT try to remove front cover
  • Remove EMV casing screws (four screws) and ground wire
  • Disconnect CCFL tubes (four connectors), noting connector orientation
  • Disconnect front buttons pcb
  • Lift EMV casing side facing to you
  • Disconnect power supply board (left) from signal board
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  • Disconnect mains
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  • Remove EMV casing screws (four screws) and ground wire
  • Disconnect CCFL tubes (four connectors), noting connector orientation
  • Disconnect front buttons pcb
  • Lift EMV casing side facing to you
  • Disconnect power supply board (left) from signal board
  • Unscrew/remove power supply board - caution: C12 is likely to store mains voltage even after days!
  • Replace caps (C34 and C66 are likely failure candidates for IPHS19-S rev1.2 boards; you might also replace C31, C32, and C35 while you are at it) - higher voltage and temperature rating are okay, capacity has to match
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