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Old 12th July 2014, 09:03 PM   #1
Jempie is offline Jempie  Indonesia
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Join Date: Jan 2008
Default TDA1543 DAC

Hi,

I have several TDA1543 dac with logo Philips, NPX, only Philips.
I use the Mini 1543 dac that use the Philips dac

When I change the dac for other 1543 only noise.

Are the other dac fake or are there several different type's

Thx
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Old 12th July 2014, 10:23 PM   #2
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Please post photos of the 'fake' dacs
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Old 13th July 2014, 12:43 PM   #3
Jempie is offline Jempie  Indonesia
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Join Date: Jan 2008
Quote:
Originally Posted by kevinkevin View Post
Please post photos of the 'fake' dacs
I'm not sure they are fake, that's why i need to know if there are different
type of TDA1543 is there any way to measure them

images.jpg
this one give noise
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Old 14th July 2014, 03:42 PM   #4
kp93300 is offline kp93300  Malaysia
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Join Date: Mar 2007
Default may be similar probvlem

Hi
I have a similiar problem with the nxp marked TDA 1543 chip.
see my post here

WHICH IS THE REAL TDA 1543 ??

I sourced the chip from adeleparts , ebay.
Where do you source the TDA 1543 ?
manage to solve the problem yet ?

I am planning to change the value of the I ref and output resistors to try .
I have no luck with 1K I ref and 1.5 K IV resistor .
i get white noise that you hear in between FM stations
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Old 14th July 2014, 04:24 PM   #5
Jempie is offline Jempie  Indonesia
diyAudio Member
 
Join Date: Jan 2008
Quote:
Originally Posted by kp93300 View Post
Hi
I have a similiar problem with the nxp marked TDA 1543 chip.
see my post here

WHICH IS THE REAL TDA 1543 ??

I sourced the chip from adeleparts , ebay.
Where do you source the TDA 1543 ?
manage to solve the problem yet ?

I am planning to change the value of the I ref and output resistors to try .
I have no luck with 1K I ref and 1.5 K IV resistor .
i get white noise that you hear in between FM stations
both with the same noise, the one with Philips logo if you start the music you hear an few seconds music then noise

still no original tda 1543 found
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