Why choose a 2465?
According to my opinion, it was one of the best portable analog oscilloscopes in its time, but it is no longer a good choice at present days because it is difficult to keep in good working order.
It is much too complicated, uses many hybrid circuits hard to find, it has the problem of using digital technologies outdated and prone to breakdowns.
The analog oscilloscope still has its place in the activities where it is necessary to check the shape of the signal, without having to make accurate measurements and without having to store it.
This is the case for exemple of learning analog electronics and repairing analog, audio and power electronics.
If it is necessary to make measurements or to store the signal, then the option that is required is the digital oscilloscope.
Its measurement and calculation capabilities have no match in analog technology, and the price of these digital oscilloscopes has become very affordable.
In place to buy a broken 2465b, I would prefer to buy a good working simpler model.
This is why I would be moving towards analog oscilloscope technologies that are simpler and easier to repair such as:
Tektronix:
465B
2235
HP
1740A
Hameg
HM605
HM1005