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Recap guide

Recap the Toshiba T1100 and Libretto

We found no Libretto or T1100 recap guide. The closest is an EEVblog video on a T1000LE that went looking for bad caps but ended unresolved.

Open the interactive checklist Tick off each capacitor as you replace it. It saves in your browser.

Check first. A recap is not always the answer here, so look at the guides before you order parts.

Which board do I have?

Boards changed during production. These notes come from the linked sources, and many are only partly documented, so check the board in front of you.

  • Libretto 50CT (Low confidence). How to tell: Pentium 75, Petunia2 chipset, no L2. Capacitors: No cap info. Capacitor list differs from other revisions: not known. Source
  • Libretto 100CT (Low confidence). How to tell: Model PA1254E, Pentium 166. Capacitors: No cap info. Capacitor list differs from other revisions: not known. Source

Where to start

We did not find a clear list of what fails first on this machine, so we are not guessing. Read the guides below, check the board for leaks, and replace what you can see.

Tips, tales and maybes

Found in write-ups and forum threads. These are other people's reports, not tested by us. Check part references and values against your own board.

  • Story: T1900 shuts off after one second (Medium confidence). A Toshiba T1900 that ran for a second then shut off had a PSU cap (6.3V 1000uF, the smaller brown one) reading 69 ohm ESR. Swapping to a 10V 1000uF fixed it, and the author says the cap looked fine and recommends an ESR meter. Source
  • Story: T1200: leaks in PSU and inverter (Low confidence). A Russian restoration of a T1200 found leaked electrolyte in the power supply board and display inverter but no board damage. The author swapped the BIOS battery for a CR2032 behind a diode and fitted 18650 cells in 2s2p with a BMS. Source
  • Tip: Libretto RTC battery corrosion (Low confidence). A poster repairing Librettos found the clock battery had corroded vias on a 70CT, fixed with 0.1mm wire, and used an external CR2032 pack behind diodes at about 2.8V. He also noted keyboard traces on a 50CT corrode, with test pads breaking first. Source
  • Story: T1000LE: caps, SRAM battery and a sneaky PSU (Low confidence). An EEVblog episode lists bad caps, a backup battery SRAM problem and a sneaky PSU fault on a T1000LE, using thermal imaging and microscopy, and ends with the repair listed as busted. Page text is only the episode summary. Source

Before you start

  • Boards changed during production. Check your board number against the guides before you order parts.

Guides we used

This page and the interactive bench are built from these. They have the photos and the full detail, so please read them and support their authors.

The capacitor list

We have not checked a capacitor list for this machine yet, so none is shown. Follow the guide above for your board, then add the capacitors in the interactive checklist and it builds a shopping list for you.

Skip the sourcing

While you are in there

Affiliate links. As an Amazon Associate I earn from qualifying purchases. These links only search by name. Disclosure

Steps, tools and safety

The steps, the tools in top, middle and budget picks, and the safety list are the same for every machine, so they live on one page: How to recap, step by step.

Values are shown as published in the guides above, and boards changed during production. Check the board in front of you. A recap involves hot tools and, on some machines, dangerous voltages. You do it at your own risk.

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