Member Avatar for dogbreath077

One of my kids caught the power cord and ( you know it) the laptop hit the floor. I caught it at the last second, so it didn't take a bad whack, but now the screen is all white. The laptop is fully functioning, and works on an external monitor. Before I buy a replacement LCD, I'd like to know if anyone has had this problem or incident before, or any advice. We've never had one of these in the store before, so I figured I'd get a little information before I tread on new ground. Any and all comments are appreciated. Thanks

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Practical troubleshooting and parts guidance for a Presario F700 showing a white display — complements the thread started by and the earlier input from . The checklist below focuses on isolating whether the fault is the LCD panel, the backlight/inverter, the LVDS cable/connector, or the small logic (T-CON) board, plus safe next steps for sourcing replacements.

  1. Quick isolation checks
  1. Try an alternate display to confirm the video output path is working — if a separate monitor shows the desktop, the problem is inside the screen assembly.
  2. Shine a bright flashlight at the LCD with the lid on: a faint picture means the panel itself is forming the image but the backlight is dead (inverter or LED driver). No image at all suggests the T-CON or panel logic.
  3. Gently flex/open the lid while watching the screen: position-dependent changes point to a damaged LVDS cable or hinge flex.
  4. Remove the bezel, inspect and reseat the LVDS connector and cable for broken wires or bent pins before ordering parts.

  1. Identifying the correct replacement
    Always read the part number on the back of the existing panel — that number (not just “F700”) determines the correct replacement (resolution, connector type, and backlight type). Older F700s often use CCFL backlights with a separate inverter; newer panels are LED-backlit and require different parts. For background on LCD and backlight types see Liquid-crystal display and Cold-cathode fluorescent lamp.

  2. Safety, sourcing and final tips
    Disconnect battery and mains before opening the lid. CCFL inverters produce high voltages — avoid probing unless experienced. Used/new panels and inverters are commonly available; confirm connector pin count and full part number before purchase. For step-by-step disassembly references and parts searches, see general guides at iFixit or the laptop vendor support site (for service manuals) at HP Support.

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Member Avatar for caperjack

according to Toshiba ,a white screen is a dead screen

Member Avatar for dogbreath077

Thanks, I'll give a new screen a try and repost. Give me about a week though, for shipping and installation, prayers, alms and pennance...LOL

Member Avatar for dogbreath077

New screen works great, thanks for the suggestions.

Member Avatar for caperjack

your welcome ,

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