Mod your Beresford TC-7510

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Originally Posted by leo

Hmm, so does the chip mute when no music is playing? without knowing the original 7510 output circuit I can't advise what to swap to what, it needs scoping mate.
Your going to need Stan on this, ideally it wants tweaking

Have you scanned all evaluation board schematics for the Wofson chip? it needs comparing against the TC-7510 circuit and then working out what needs to be added or changed

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Leo,

Thanks again for your reply, always appreciated. Like I've said I'm no great shake on the DIY front, so the idea of scoping the output to see what's going on would be OK, but after that I would have no idea of the way forward!

I've pursued a couple of paths since, including Stan and getting in contact with the link you posted on the Head-Fi forum, and it doesn't seem like a quick fix!

It might be an easier option just to go back to the original chip. :scratch:

Thanks for the quick replies! It is much appreciated.

I can't wait for the LM4562MA to arrive on Tuesday!

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Originally Posted by leo

Those are ERO MKP1830, they are far superior than the Wima's! low inductance

Only fit them if you know the value though, is there any numbering on top of the cap?

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You can recognize caps just by looking at them? Wow.

Better than WIMA's? Woo Hoo! The numbers at the top say n22 J 100

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Originally Posted by trailer

Leo,

Thanks again for your reply, always appreciated. Like I've said I'm no great shake on the DIY front, so the idea of scoping the output to see what's going on would be OK, but after that I would have no idea of the way forward!

I've pursued a couple of paths since, including Stan and getting in contact with the link you posted on the Head-Fi forum, and it doesn't seem like a quick fix!

It might be an easier option just to go back to the original chip. :scratch:

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Yes, may be right regarding easier to stick another PCM1716 back in

I promise once I get around to getting one of these 7510 dacs I'll try as many mods as possible and start a new thread in the diy section, probably do a sticky or something seeing as though theres a bit of interest for tweaking these things

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Originally Posted by snowflake

Thanks for the quick replies! It is much appreciated.

I can't wait for the LM4562MA to arrive on Tuesday!



You can recognize caps just by looking at them? Wow.

Better than WIMA's? Woo Hoo! The numbers at the top say n22 J 100

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Sad isn't it:lolsign: I normally know the brands of electrolytics by looking at the vent markings on the top of the cap too:o

N22 usually is 220pf J is 5% for the tolerence and 100 is 100v so they should be right ones to try

Problems with gain and sound that I reported earlier in this thread have now been solved! I will post an entry on my blog very soon (as soon as I have some decent pics) to show you guys and help out anyone who may be having the same problems.

Heres a link to my blog in advance.

I'm just about to perform Mod21 and Mod21pt2. Clearly, the mods are to the output stage. So, will the upgrade effect the variable output only or will the fixed output be similarly upgunned? How about the headphone amp? I'm assuming the headphone amp is located adjacent to the volume pot so the performance through headphones will not change.

Thanks for clarifyng this for me.

Just seen this quote from Stanley.

"However, a regulated linear power supply of at least 300mA and not more than 15V off load gives better bass handling ability and a fuller sound."

Anyone know what the ideal current is?

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Originally Posted by PJPro

I'm just about to perform Mod21 and Mod21pt2. Clearly, the mods are to the output stage. So, will the upgrade effect the variable output only or will the fixed output be similarly upgunned? How about the headphone amp? I'm assuming the headphone amp is located adjacent to the volume pot so the performance through headphones will not change.

Thanks for clarifyng this for me.

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Is this a stupid question or is the answer not known?

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Originally Posted by PJPro

Is this a stupid question or is the answer not known?

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Hi PJ. Those mods will affect all output for the 7510. Fixed, variable, and phones.

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Originally Posted by jgarner71

Hi PJ. Those mods will affect all output for the 7510. Fixed, variable, and phones.

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Thanks jgarner71.

I am performing Mod 21 parts 1 and 2 and documenting the build here.