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Old 6th October 2010, 01:38 PM   #1
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Default TDA1541 DAC problem (bought off here)

I bought the TDA1541 board advertised here.

Within the first month or so, I noticed that sometimes it was reluctant to lock on to the signal (coax or optical).

Now, the lock LED is on with no signal. As soon as there is a signal, the LED goes off but there is no sound (because it isn't locking obviously!).

Could anybody give me any pointers on what to look for?

The chipset used is TDA1315H+SAA7220+TDA1541.

I have emailed the original vendor of the board 'bbp' but all I got was a reply wanting to know which chipset, and then that was the last I heard.

Can anyone help please?

A link to the documentation (but no schematics) can be found here.

Thanks,
Tony.
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Old 6th October 2010, 08:14 PM   #2
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i think you can find schematics here FS:TDA1541 OS DAC KITs and into next post (follow the links)
(i'm not 100% sure, as i'm not that good with chinese hope component codes will match)
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Old 6th October 2010, 10:17 PM   #3
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I had a good look, but it seems all I can find are the variants with the CS8412 receiver chip.

Thanks for the suggestion though.

CORRECTION: I found what looks to be the correct schematic.

Thanks!

Last edited by audio_tony; 6th October 2010 at 10:19 PM.
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Old 7th October 2010, 07:41 PM   #4
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I now have a schematic, but I'm really rusty with digital (analogue was always my forte') so can anybody offer any starting points?

Thanks.
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Old 7th October 2010, 10:56 PM   #5
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Get the magnifying glass out and check the soldering !
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