Collection of mods for Beresford TC-7520

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Originally Posted by mantisory

Hey everyone,
So I did the first mod last night, substituting the opamp for the LM4562NA and removing C5/6. I am using a toslink that is pretty long ~25 feet or so.
Before I did the mod, there was always a little popping sound when the first sounds came on, but now it is there every time the song changes...any ideas?
In any case, I may try moving the computer closer and see if that has any effect.
regards,
byron

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Try a shorter toslink.

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Originally Posted by ding-a-ling1337

Try a shorter toslink.

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Very constructive post - thanks a lot !! :mental:
Cheers,

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Originally Posted by DaveC

Very constructive post - thanks a lot !! :mental:
Cheers,

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I'm absolutely baffled by your ignorance to, or unwillingness to recognize, your hypocrisy here. I try to make a legitimate suggestion to alleviate that user's problem and you reply to me to make a sarcastic comment about how you don't think my post is constructive enough? Just astounding.

DaveC, I wouldn't say your post is very contructive at all...pot calling kettle?

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Originally Posted by ding-a-ingling1337

I'm absolutely baffled by your ignorance to, or unwillingness to recognize, your hypocrisy here. I try to make a legitimate suggestion to alleviate that user's problem and you reply to me to make a sarcastic comment about how you don't think my post is constructive enough? Just astounding.

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Chillax sunshine - if you can't take it you shouldn't give it :ner::ner::ner::ner:
Pot, kettle, black and glass houses spring to mind.
What else did you think mantisory meant when he posted: -

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Originally Posted by mantisory

In any case, I may try moving the computer closer and see if that has any effect.

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Cheers,

Hi Hugh,

Do you think there could be a clue here:

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In any case, I may try moving the computer closer and see if that has any effect.

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Maybe Byron needs to use a longer than normal Toslink cable, which isn't ideal? I think it was your somewhat curt reply (and stating of the obvious), rather than perhaps giving more thoughtful advice, that prompted Dave's response. I don't think you're doing it on purpose now (since you've been warned), but you do have a rather unfortunate way of expressing yourself sometimes.

Marco.

ok...reset - I didn't mean to spark discord :)
Anyway, to clarify, I am using a long TOSLink cable right now, and I think perhaps this may be an issue..but the problem has really been amplified since I did this mod, although it already existed to some extent previous to that...I never noticed the problem with the 7510 however...
Regards,
Byron

hmm..
so the popping did not goaway, and now there is also a loud hissing noise out of the right channel when there is no signal going to the DAC...I hope I didn't fry my tc7520!
b

Is the popping sound from playback via the PC, or is it also from a CD player?
If it is from the PC I remember someone mentioning that the volume level in the audio mixer panel in Windows should be set to something less than 100%.

The noise could be from a suspect opamp. If you rolled opamps, go back to the originals and see if the noise is still there, or if it has gone.

Stan

problem solved...partly because one of the caps i clipped was resting underneath the PCB and (possibly) shorting something...partly because the TOSLink cable was really not making a good connection. Took it apart, cleaned it up, put it back and in a better spot, and all is well
regards,
byron