CF-Y4 Repair-- No power. (Repair manual? Tips?)

Post all general Toughbook related things here.
Post Reply
Message
Author
ToughbookLover
Posts: 3
Joined: Thu Dec 17, 2009 9:34 am

CF-Y4 Repair-- No power. (Repair manual? Tips?)

#1 Post by ToughbookLover »

Hello fellow toughbook enthusiasts,

I'm quite depressed to report that my Toughbook Y4 no longer accepts power from its brick. Nor from the replacement brick
I acquired last time this happened. It was sad to be using it, plugged into the wall, watching the battery slowly drain, knowing
that there would be no coming back from 0%.

This is the third time I've seen this problem; the first time, it started working after a little bit of time. The second time, I
bought a new power brick, and by the time it arrived in the mail, the laptop was working again. I'm not sure if I'm burning through power bricks or not, but I suspect a problem with the voltage regulation/socket on the motherboard. Maybe I'll be lucky and the socket is no longer soldered well, or there's an obviously bad solder joint that I can fix.

In any case, I come here seeking advice and mayhaps a Service Manual, before I pull out the multimeter and open this old friend up.

Thanks,
-TJ

Edit: Full model number is CF-Y4HWPFZBM

User avatar
Rob
Toughbooktalk Founder
Posts: 3575
Joined: Mon Mar 16, 2009 8:23 pm
Contact:

Re: CF-Y4 Repair-- No power. (Repair manual? Tips?)

#2 Post by Rob »

I would have to say that unfortunatly the power plug is probably shot. While this can be soldered with a skilled hand (I could do it for sure), it is better to replace the motherboard.

I've attached a few service manuals for you as well :)

Welcome to the forums as well :pbjt:
Attachments
CF-Y4 Mk 2 schematic.pdf
(1023.74 KiB) Downloaded 479 times
CF-Y4 Mk2.pdf
(104.74 KiB) Downloaded 568 times
CF-Y4 Mk2 board.pdf
(686.88 KiB) Downloaded 509 times
~Rob - Vice President - Rugged Depot~
~Cell: (630)/300-8877~
~Owner - Toughbooktalk~
~Fully rugged Toughbook user since April 18th 2005~
~FZ-40ACAAHKM - Primary Toughbook / Workstation as of 7/29/22
~Win10 Pro (Win11 DG), Intel Core i5-1145G7 (up to 4.4GHz), vPro, 14.0" FHD Gloved Multi Touch, 16GB, 1TB Samsung SSD, Intel Wi-Fi 6, Bluetooth, 4G EM7690, GPS, Quad Pass (BIOS Selectable), Mic and Infrared 5MP Webcam, Standard Battery, TPM 2.0, Emissive Backlit Keyboard, Dual Batteries, USB A + HDMI + Serial X-PAK, Shoulder Strap, Flat~
~AT&T Business 1GB Fiber 1GB/1GB business static line~
~Gamber & Johnson Platinum Partner~

http://www.toughbooktalk.com
http://downloads.toughbooktalk.com/
http://www.rugged575.com - 300' UHF GMRS Radio Repeater
http://www.crete600.com - 310' UHF Linked GMRS Radio Repeater


~Emergency preparedness starts with reliable communication systems above all. Pretend the internet and cell phones didn’t exist, how will you communicate? If you’re interested in learning more, ask me!~

ToughbookLover
Posts: 3
Joined: Thu Dec 17, 2009 9:34 am

Re: CF-Y4 Repair-- No power. (Repair manual? Tips?)

#3 Post by ToughbookLover »

Thanks for the manuals, Rob. Unfortunately the promising-looking "Service Manual" (the second link) is only 2 pages long-- looks truncated to me.

I disassembled my Y4. The power connector is not directly soldered to the board; there are actually two wires that lead to a connector on the
motherboard, presumably to make it much more resistant to breakage.

So what's wrong? I have no idea. I do know that if I connect power to the laptop (while open), I can hear a "ticking" (an electronic power switching sound)
about once a second.

If I disconnect the CD-ROM drive from the motherboard, then the LED in the power switch lights up in time with this ticking. I can actually disconnect
everything from the motherboard and still hear this ticking. (and the LED will light if that part if is connected, as long as the CD-ROM is not.)

So, there's power... I expect the flashing is some sort of trouble code, but I have no idea how to interpret it.

Any suggestions or good sources for motherboards? I see a seller on ebay who is selling both a used Y4 for $300, and the parts from a stripped Y4 including
the motherboard for Y4. But, sketchy... Maybe I just need to let go. But how will I get 1400x1050 in a 3.3lb package?!

-TJ

ToughbookLover
Posts: 3
Joined: Thu Dec 17, 2009 9:34 am

Re: CF-Y4 Repair-- No power. (Repair manual? Tips?)

#4 Post by ToughbookLover »

For the record, I obtained a Y5 service manual at http://toughbookforum.com/viewforum.php?f=32 which is probably similar enough.
(It also did not help.)

TJ

Post Reply

Return to “General Toughbook Talk”