Twospruces
Veteran Member
hi, how did you track down the actual part number knowing only the case markings?I've found a shot SMD voltage regulator. Description below, including the location on the flip side of the mainboard. Make sure yours has the RD imprint on top.
Ordered here:
what matters is the upper RD symbol, the bottom one is LOT number (my was R5, but yours may be different).5PCS S-81250HG-RD-T1 SOT-89 | eBay
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The good news is that the laptop started, booted properly from the old hard drive, and worked for about a day. Then it started switching off suddenly. After a few more on/off cycles it would not want to turn on any more. The red DC-IN stays on, not flashing, but it will not power up anyways. More testing and troubleshooting on the way when i find more time.
I can definitely confirm that you do not need a battery to switch it on - it should power up and boot on the power supply/charger alone.
Let me know if you also find this SMD part broken on yours, and of course if you manage to bring your toshiba back to life, even if for a day
thanks!