Laptop won't turn on

[kinaish]

Toshiba tecra won't turn on power led blinks when charger connected

 

[skora]

Found this on Tosh website forums, hope it helps:

Brad



The blinking is a hex code for the problem.



I dredged this up from some old messages I had from the old forums. If you can understand it, feel free to use it. You have to convert the blinks to a hex code.



----



DC IN LED

DC IN LED Power supply status

-Lights green DC power is being supplied from the AC adaptor.
-Blinks orange Power supply malfunction*2
-Doesn’t light Any condition other than those above.

*2 When the power supply controller detects a malfunction, the DC IN LED
blinks and an error code is displayed.

To check the power supply status, install a battery pack and connect an AC adaptor.

Check 1 If the DC IN LED blinks orange, go to Procedure 2.
Check 2 If the DC IN LED does not light, go to Procedure 3.
Check 3 If the battery LED does not light orange or green, go to Procedure 4.

Procedure 2 Error Code Check

If the power supply microprocessor detects a malfunction, the DC IN LED blinks orange.

The blink pattern indicates an error as shown below.

Start Off for 2 seconds
Error code (8 bit)
“1” On for one second
“0” On for half second

Interval between data bits Off for half second

The error code begins with the least significant digit.

Example: Error code 12h (Error codes are given in hexadecimal format.)
<----------Read
0 1 0 0 1 0 0 0
Start Bit 0 1 2 3 4 5 6 7
Order -------->


Check 1 Convert the DC IN LED blink pattern into the hexadecimal error code and
compare it to the tables below.

DC IN
Error code Meaning
10h AC Adaptor output voltage is over 16.5V.
11h 10/100 Network Port Replicator II or Enhanced Port Replicator II
output voltage is over 16.5V.
12h Current from the DC power supply is over the limit (6.16A).
13h Current from the DC power supply is over the limit (0.5A) when there is
no load.
14h Current sensing IC is not normal.

Main Battery
Error code Meaning
20h Main battery voltage is over 13.46V. (Not supported)
21h Main battery charge current is over 5.06A.
22h Main battery discharge current over 0.5A.
23h Main battery charge current is over 2.70A.
24h Current sensing IC is not normal.
25h Main battery charge current is over 0.3A when there is no charging.

Secondary Battery
Error code Meaning
30h Secondary battery voltage is over 13.46V.
31h Secondary battery charge current is over 5.06A .
32h Main battery discharge current over 0.5A.
33h Secondary battery charge current is over 2.70A.
34h Current sensing IC is not normal.
35h Secondary battery charge current is over 0.3A when there is no
charging.

S5V output
Error code Meaning
40h S3V voltage is under or equal to 3.14V.

EVER5V output
Error code Meaning
50h EVER5V voltage is over 6.0V.
51h EVER5V voltage is under or equal to 4.5V when the computer is
powered on.
52h EVER5V voltage is under or equal to 4.5V when the computer is
booting up.
53h EVER5V voltage is abnormal when the computer is suspended.

EVER3V output
Error code Meaning
60h EVER3V voltage is over 3.96V.
61h EVER3V voltage is under or equal to 2.81V when the computer is
powered on.
62h EVER3V voltage is under or equal to 2.81V when the computer is
booting up.
63h EVER3V voltage is abnormal when the computer is suspended.

PCOREV output
Error code Meaning
70h PCOREV voltage is over 2.04V.
71h PCOREV voltage is under or equal to 1.08V when the computer is
powered on.
72h PCOREV voltage is under or equal to 1.08V when the computer is
booting up.
73h PCOREV voltage is over or equal to 1.08V when the computer is
powered off.

PGTLV output
Error code Meaning
80h PGTLV voltage is over 1.725V.
81h PGTLV voltage is under or equal to 1.275V when the computer is
powered on.
82h PGTLV voltage is under or equal to 1.275V when the computer is
booting up.
83h PGTLV voltage is over or equal to 1.275V when the computer is
powered off.

B1R8V output
Error code Meaning
90h B1R8V voltage is over 2.16V when the computer is powered on.
91h B1R8V voltage is under or equal to 1.53V when the computer is
powered on.
92h B1R8V voltage is under or equal to 1.53V when the computer is
booting up.
93h B1R8V voltage is abnormal when the computer is suspended.

BVGAV output
Error code Meaning
A0h BVGAV voltage is over 2.28V when the computer is powered on.
A1h BVGAV voltage is under or equal to 1.53V when the computer is
powered on.
A2h BVGAV voltage is under or equal to 1.53V when the computer is
booting up.
A3h BVGAV voltage is abnormal when the computer is suspended or over
1.53V when the computer is powered off.

 

[kinaish]

Dear skora
I don't know how i can thank you your reply was very usefull and I could now know the problem but where i can find solutions for every error code

 

[skora]

Don't worry about every error code, just find what code you have and then we'll research that. The info above came from http://laptopforums.toshiba.com/
That would be the first place I'll look if you get me the code, or feel free to look yourself and let me know how it goes.

No thanks needed, this is what I do for fun. I learn just as much as you do usually. When you spend a lot of time doing this stuff, you learn where the good info is easy to find.

 

[scotty_123]

Hi Skora,

Bit of a late addition, but I get this as well and error code translates to 72H - PCOREV voltage is under or equal to 1.08V when the computer is booting up. This is on a Tecra M2.
It works fine running on just the battery though, so I'm guessing its something to do with the motherboard power thingy - before I dismantle it, do you know if the Tecra's have a separate power board in them, or is it all part of the one motherboard?
Thanks for any help you can offer,
Scott

 

[scotty_123]

Nah, forget that. It doesn't power up with the battery either - same error.
I've tried swapping memory, processor and power supply - nothing.
Must be the m/b - great !