Rockbox Technical Forums

Support and General Use => Hardware => Topic started by: Toni on November 18, 2004, 04:18:21 AM

Title: Dead DC power jack
Post by: Toni on November 18, 2004, 04:18:21 AM
Hello,

I recently got a used Archos FM Recorder with a dead DC power jack.
Has anybody an idea how to repair this?

Thanks,
  Toni
Title: Re: Dead DC power jack
Post by: [IDC]Dragon on November 18, 2004, 04:21:41 AM
Is the jack itself broken? Or is there a cold solder joint, like somebody reported?

Jörg
Title: Re: Dead DC power jack
Post by: Toni on November 18, 2004, 03:58:20 PM
Hi Jörg,

I think there are two major problems with my FM Recorder.

1. The physical connection between the DC-Jack and the plugin adapter seems to be really bad.

2. Additionally the PCB below the display has completely lost its connection to the shielding. Looks like it has not been desoldered but simply forced off. I hope after resoldering it will work again.

Still I don't know, how to disassamble the box -especially the cover- in a convenient way. The hints on "Disassembling the Archos" are only partly helpful. :-\

Toni
Title: Re: Dead DC power jack
Post by: Toni on November 19, 2004, 05:00:19 PM
Hello,

I had no success, with resoldering the chassis to the PCB.

The power supply feeds ~20mA into the board, independently of the battery status.

So I think, I have to bypass the power jack and directly feed the batteries with
manual charging control.

Does anybody know, wether 100mA constant current for 12h is ok for the Lithium
batteries, while they are still inserted?

Thanks in advance
 Toni