Why replace the DAC on an iPod Classic?

Question

Do it yourself

If you only used a soldering iron to fix headphones.
Is it real at all?
Where to begin? Books? manuals, etc.?
Thank you.

Answer 1

Opening your iPod or searching the internet for pictures or videos of the insides of your iPod.
You find a DAC chip on the board, you try to make out its markings.
You find documentation on the Internet for this chip.
In the documentation, you look at Pin Configuration, Pin Description (on which leg which function), Electrical Characteristics (electrical parameters) and Package Dimensions (physical size and distance between the legs of the microcircuit).
You are looking for an analogue that would be compatible with the original DAC in terms of electrical and physical characteristics and, at the same time, provide the best sound reproduction characteristics.
Only after you are convinced that the analogue will take the place of the original, you buy an analogue.
Solder the original, solder the analogue. How to solder, a lot of videos. When it comes down to it, ask, throw links.
This is if you are lucky and find an analogue that can be soldered in place of the original.
If unlucky, and the analogue is not found. You can (theoretically) either make an adapter, or solder the wires. It's all laborious and questionable.
If that same WM8740 just takes the place of the original DAC, then great. We have it costs about 1000 rubles.

Answer 2

I did not understand the question, describe the situation in detail, you will not regret it.