Toshiba Satellite M55 intermittent video

jetb2 · 10-01-2008, 08:12 AM

User told me that it sounded like the computer was starting but nothing appeared on screen. I get the laptop home and….it boots up fine, I can see the screen.

I take it apart to check connections. ribbon to back of monitor is tight, ribbon to motherboard is tight. Put it back together. I walk it around a bit and jostle it to recreate ‘light travel’. I put it down, pick it up, repeat.

Start it back up, no monitor, but there is a back light. Take it apart, connections solid. When I do unplug/plug the cable from the motherboard the monitor does flicker back on.

I just plugged in an external monitor and that comes up fine. I hit fn-f5 and that cycles through the monitors and the laptop screen does come on. I unplugged the external, shut down the notebook and came back 5 minutes later and it turns on fine even without the external monitor.

Thoughts?

**TriggerFinger** · 10-01-2008, 11:30 AM

It could be a loose connection or a defective cable. Defective cables like cold solders are very hard to pin down as they can work or fail intermittently.

10-01-2008, 08:12 AM	#1 (permalink)
jetb2 Registered User Join Date: Oct 2008 Posts: 1 OS: Windows XP	Toshiba Satellite M55 intermittent video User told me that it sounded like the computer was starting but nothing appeared on screen. I get the laptop home and….it boots up fine, I can see the screen. I take it apart to check connections. ribbon to back of monitor is tight, ribbon to motherboard is tight. Put it back together. I walk it around a bit and jostle it to recreate ‘light travel’. I put it down, pick it up, repeat. Start it back up, no monitor, but there is a back light. Take it apart, connections solid. When I do unplug/plug the cable from the motherboard the monitor does flicker back on. I just plugged in an external monitor and that comes up fine. I hit fn-f5 and that cycles through the monitors and the laptop screen does come on. I unplugged the external, shut down the notebook and came back 5 minutes later and it turns on fine even without the external monitor. Thoughts?

10-01-2008, 11:30 AM	#2 (permalink)
TriggerFinger Moderator Hardware Team Join Date: Jan 2008 Location: LV, NV, USA Posts: 5,976 OS: DOS 6.0	Re: Toshiba Satellite M55 intermittent video It could be a loose connection or a defective cable. Defective cables like cold solders are very hard to pin down as they can work or fail intermittently. __________________ DBAN - Memtest86+ - BartPE - Linux LiveCD - ImgBurn - HDD Diags - Everest Mark the THREAD as SOLVED