| roibm |
Hello there...
First, I don't know if this is the right category for my post. If it isn't, someone please move it where it belongs.
I would like to tweak the digital in of my receiver. First, from what I've seen the caps and the opamps are pretty very much ****. The voltage regulator is about the same as well. Of course, none of the components are really high end, but I can't afford high end right now, so I try to make the best from what I have, that's why I deceided to tweak it.
Could someone help me with directions, tips, anything would help.
I attach some pics with the digital in pcb.
Thank you very much :) |
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| roibm |
Come on guys, :smash: I know there must be somebody that could help me. Maybe I din't provide all the details, so feel free to ask, or yell, or whatever. Anything will help...
I know there is no schematic posted on this, but that's because I don't have any, and Denon doesn't want to send me one.
Is there a way that you can tell what caps are the most important over there? :hot: |
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| Frank Berry |
What is the model number?
Advice is impossible without more information and a schematic. |
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| roibm |
First, thanks for your post, the ice was broken... :)
It is the AVR-1802 sold in Germany.
I've just sent another email to Denon, this time to Denon USA service dpt.
I hope I will get some feedback.
What I was hoping to get are not necessarily precise directions, a more gener approach would help as well(something like this: the caps next to the opamps must be for this, so it would be a good idea to change them for some better). This will help as well.
Other target might be the clock, as I can't differentiate(visually) between a good clock and the clock it uses... :hot: |
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| weissi |
Hi!
There are many things you can do, but I cannot promise you any improvements ;-)
First of all, search for the datasheet for the AKxxxx, iŽll guessthis is the CODEC wich performs ADC-DAC. This one will be happy if youŽll provide a seperate 5V line for it (youŽll get the unregulated volatge at the njm7805, look in the datasheet...)
A safe way would be to replace all the electrolytics with OSCONS(capacitance can be somewhat smaller then!)
This 8-pin chips are, I guess, opamps, wich can be replaced by somewhat better. try opa2134, they are cheap and do have a not so bad reputation...
For more information, please use E-mail (german plz ;-)
regards |
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