Replaced fuses. But still no power in start or standby. Has power at ac cord at board power connector.
SOURCE: trying to fix this toshiba laptop that does not
If this problem has not yet occurred, then check your computer's BIOS version, and update it, if a newer BIOS is available.
For Windows Vista, click the Windows Start button, type "msinfo32" in the Search field, and press Enter. The System Information utility will appear, listing the computer's BIOS version in the pane at right.
For Windows XP, click the Windows Start button, click Run, type "msinfo32" in the Open field, and press Enter. The System Information utility will appear, listing the computer's BIOS version in the pane at right.
Next, visit the Toshiba Support website, at support.toshiba.com, click Download, choose your computer from the model lists, and click Go. On the search results page, click the All Categories field, then click BIOS. A new results page will appear, showing just the current BIOS version for your computer. If you click the link for the BIOS, the Change History will appear, allowing you to review revisions to successive versions of the BIOS. The fix for the password prompt problem may be listed as "auto password prompt pop-ups", or a similar phrase.
If the version number of the BIOS listed on the Toshiba Support website is greater (newer) than the BIOS version displayed by the System Information utility, then connect the AC adapter to the computer, and click the Download Now button to download and install the BIOS.
For more help, see Support Bulletin 98081213 Obtaining downloads and support docs from the Toshiba Support website.
If the problem has already occurred on your computer, then please make arrangements with a Toshiba Authorized Service Provider to have this problem resolved. Toshiba will cover the cost of this repair under warranty until Dec 31, 2010.
To locate a Toshiba Authorized Service Provider (ASP), please visit the Toshiba Global ASP Locator at pcrepair.toshiba
The T300 uses a 2.5A fuse.
To replace the fuse:
1. Unplug the AC cord from the AC power source,
then remove the AC power cord from the speaker's
power connector.
2. Remove the fuse cap with a small, flat blade screwdriver
(see diagram 2).
3. Remove the fuse from the fuse cap
(see diagram 3).
4. Replace the fuse inside fuse cap with another metric
5X20mm size fuse
5. Replace the fuse inside the cap, replace the fuse
and cap in the power connector (see diagram 5).
6. Connect the AC power cord to the speaker and
raise it upright.
7. Connect the power cord to an AC power outlet
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