IBM R50 will not boot

[petermarston]

Hi, I have an IBM R50 (1831-EG1) which has been working for 5 years but now will not boot.

When the laptop is switched on the display does not turn on the fan keeps spinning and there are no beeps.

I have tried removing all parts but still the same occurs.

The memory, hard drive are working fine (tested in another laptop).

Any ideas what the problem could be.

Thank you.

[RealBlackStuff]

Welcome to the forum.
Try an external monitor first.
If only the backlight is out, either the inverter, the LCD cable, the CCFL-tube or the LCD itself is defective.
Also, check the fuses on the mobo, using http://theboardroom.info/T4x_Fuses.pdf which is almost identical.
After removing all RAM, HD, CD, wifi-card, BT and/or Modem card, the laptop should beep 1-3-3-1.
If not, try and replace the CPU.
If still no joy, you need to replace the motherboard (see the link in my signature).

[petermarston]

Thanks will try that and get back with results.

[petermarston]

Tried everything suggested and still the same occurs.

Must be a motherboard problem.

Thanks for the help

[RealBlackStuff]

Contact Nick Paton at www.reflowrepairs.co.uk (or ...com) in Newcastle/UK.