CF-52vPro Help boot to blank screen

When powering it up it reboots after 10sec only once and it will not POST needs manual power off. After flux and heat I got to the bios but no drives attached so I put them in hit ctrl alt del rebooted to black screen again.

Has anyone fixed any of Panasonic's on board motherboards with flux re-flow? I did just that with some success then shimmed the die's and back to square one.

Any ideas and incite would be great !

I Still wonder why Panasonic makes a "semi-rugged" computer with BGA CPU and one vent to properly cool both die's !!

 

Welcome to the forum!

I'm not sure that I understand.... You say that you have no drives attached? Where is it supposed to boot to?

Usually if it passes post and boots into the BIOS.... Then you'll be good.

As far as relowing... I know it will work on some electronics. I have fixed a lot of parts that way... But never on a Toughbook as I have never had the need. But then I only deal with the fully rugged line.

 

When I slapped it back together I didn't have to drive in the caddy (recovering data) I booted into the BIOS put the drive back together put it in rebooted with the drive in and no video , no sound from repeated keys hit and had to hold the power to shutdown.

? Can you remove the CPU from the fully rugged ? I have also fixed HP Apple Xbox 360 PS3 .... but it is usually the on-board GPU that's the problem.

The CF-52 heatsink is not screwed to the base anywhere near the GPU so my first thought was the GPU the I noticed the edges of the CPU looked like they were lifting, you would think for $3000.00 they could at least put the EPOXY like you see on manufacture defects motherboards that have been refurbished.

My boss wrote it off so he didn't have to worry about it so I got a new one and one that looks new but doesn't work.

Wasn't sure if anybody had similar problems with Panasonic Toughbooks
anyway I will give it a go again and see what happens.

Thanks Again for your time!

Adam