Mike De Petris wrote:
On Aug 13, 6:41 pm, Meat wrote:
On Fri, 13 Aug 2010 09:25:13 -0700, Mike De Petris wrote:
On Aug 13, 4:23 pm, Meat wrote:
On Fri, 13 Aug 2010 04:55:24 -0700, Mike De Petris wrote:
On Aug 13, 1:43 pm, wrote:
Mike De Petris wrote:
My laptop freezes when I connect the power cord, works well on
battery only.

I want to check the motherbard in search for the faulty component,
where could I find pinouts and voltages to check for?

Toshiba Satellite A205-S4577 (PSAF0U-01Q009)

Laptop Motherboard: MAIN BOARD 945GM. Main Board 945GM EXC+51
CA+MIC MDC 1310A2120812 Alternate Part Numbers: V000108030

Processor:
LF80537 T5300
5648B999 SL9WE
1.73/2M/533
INTEL... copyright 06

I don't know about acquiring a schematic for trouble
shooting the MB,
but the first thing I would do is test the power adapter with a load
attached. I have repaired several that output the correct voltage
but failed to regulate when loaded down.

Also, some Toshiba Satellite computers were notorious
for having power
connector problems. I trust this computer does NOT have such a
problem?

no problems on the connector
tried different power supplies, even stabilized laboratory psu

Did you try cleaning the air ducts? When on batter the CPU 'may' be at
a reduced clock speed via Toshiba Power Management when on battery.
When on the PSU, the CPU will go to full speed and may just be over
heating.

Food for thought --

thank you, anyway please consider the laptop is completely teared a
part, non problems of air flow, and when connectinh power it locks
immediately even if in the BIOS pages

Had no way of knowing since you didn't mention these additional facts in
your original post.

I'm sorry, I'm just forgetting pieces as I wrote this long story many
time in different newsgroups and forums, and still need to find a
solution.

Anyway I can still use the laptop on battery, or giving 12V with an
ATX PSU in place of the positive battery pole, leaving other battery
contacts in place.


Have you looked at the MB power bus (+5v I would assume) for ripple
when you attach the external power supply?