| Chivvyp |
Hi,
I have an old Philips CD 160 which I'm playing with. I was looking to remove the DC blocking caps but I noticed a DC of c. 4 v on each of them although they take care of it ok.
I looked further and I can see the DC voltage on pins 1,5,6 and 7 of both opamps.
For both channels the DC is exactly 4.08 V.
Given that this is exactly the same on both channels I just want to check it it's really a problem or if it's intended to be like that (I don't have any schematic).
Grateful for any advice.
Thanks
Pete |
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| Tube_Dude |
| Is exactly like that, and is the reason why the output capacitor was there... |
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| poynton |
| quote: | Originally posted by Chivvyp
Hi,
I have an old Philips CD 160 which I'm playing with. I was looking to remove the DC blocking caps but I noticed a DC of c. 4 v on each of them although they take care of it ok.
I looked further and I can see the DC voltage on pins 1,5,6 and 7 of both opamps.
For both channels the DC is exactly 4.08 V.
Given that this is exactly the same on both channels I just want to check it it's really a problem or if it's intended to be like that (I don't have any schematic).
Grateful for any advice.
Thanks
Pete |
Hi.
I have attached the output stages of the CD160.
As you can see, it is direct coupled from the TDA1541 DAC to the output cap, hence the Dc on the output.
Andy |
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| Chivvyp |
Thanks all for the info. Looks like I need to keep the caps!
:)
Do you have any more data to spare on this player, Andy?
Regards
Pete |
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