Third Party > Repairing and Upgrading Rockbox Capable Players

Iriver H340: Only starts with battery disconnected/HDD noise in headphones

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Groove:
Hello,

short version:
-Player only starts with battery disconnected; I guess the chips responsible for battery management are  
 broken.

-HDD noise in headphone jack signal; I think the UDA 1380TT chip is ok since the line out jack works
 without any problems.

...and here's the whole story:

My H340 always worked without any problems until one day
I could suddenly hear the harddisk noise in my headphones.
The line out still functioned without any problems.
However I can't live without the headphone jack since I use
it with an LCD remote.

First, I thought it had to be some kind of grounding problem of the headphone jack
and I opened the player.

Disassembling it, I did something really stupid: The battery plug was quite difficult to remove, so I tried to remove it with a screwdriver and created a short circuit by accident  :-\
It was only for a second but the player is partially dead now.

It only starts without the battery plugged in saying "charging".
When I press play then, it starts the iriver firmware and I can use the player normally besides the HDD noise in the headphone jack.


Thank you in advance!

Groove:
Ok, I solved the battery problem :)
The player wasn't really dead, but the display did't turn on after reconnecting the battery.
Luckily, I found a thread with the same problem.
It's a normal rockbox behaviour, I only had to reset the player after reconnecting the battery and it was working, again.

However, there's still the noise problem.
I figured out that the UDA1380TT chip must be defect.
I looked at the datasheet and saw that it houses in fact two amps, one for headphone out and one for lineout.

Does anyone know where to get these chips?
I already searched various shops without success.

If somebody wants to sell me a chip, I would be very happy :)

thanks

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