https://www.posetteforever.com/viewtopic.php?f=64&t=1413&p=31212#p31212
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Visitor
Wednesday, 17 May 2006, 08:45 AM


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Yes, all Tardis have what is called the chamelion circuit, that permits them to immitate anything.  For example, when the Master had used up his last regeneration, he made his Tardis look like a statue that was indented to be an evil creature drawn to a good plant "Traken" to be become a statue and then to errode away.  What he was really after was to gain the powers of the Keeper of Traken so to amoung other things beable to regenerate a new body.  But he failed, he did then change his tardis to look like a clock and then kidnapped someone, and with the fading powers of almost being keeper he used that person to provide himself with a new body.

Every Tardis has this ability, except for the old type 40 used by the Doctor.  When the Doctor stole it the first time, it was in the shop for repairs, because that circuit was broken and the police call box was the last form that it had before it broke.  Latter after his trial (episode War Games) and being sentenced to live on earth, he was giving the same Tardis, with additional damage to its circuits and the critical knowlege of time mechanics blocked from his memory, as part of his punishment.  In time he repaired everything else but that one circuit.

Another time when he was back home, I think that was when he became the President of the Time Lords.  He again fled from his world, and just happened to again steal the same Tardis with the broken circuit.