Please help, I've wrecked my Beresford

**James G** · 26-02-2009, 05:36

Originally Posted by ultraviolet

Looking closely at your pic, are you sure EC4 and EC5 are in the right way round? The stripe appears to be on the side facing the op-amp whereas on Stans photo it's on the opposite side. Assuming your caps stripe is marked as negative not positive.

Haha, I hadn't noticed that!

But the pic I posted was before I did any changes to the caps, so that's the way they were when I got them.

Attached is a photo of my unmodded DAC. They are also the same way.

Should I turn these around to match the photo?

**James G** · 26-02-2009, 06:33

I just checked around on the net and found that others are also the opposite of mine. Maybe someone that bought one in the past couple of weeks can compare to see if it's the same as mine? Thanks.

**StanleyB** · 26-02-2009, 08:05

Originally Posted by jgarner71

Haha, I hadn't noticed that!

But the pic I posted was before I did any changes to the caps, so that's the way they were when I got them.

Attached is a photo of my unmodded DAC. They are also the same way.

Should I turn these around to match the photo?

You have to turn them round as indicated in the MOD21 sheet. The sound difference is going to blow you away.
If I have to tell you why, I'll have to kill you afterwards just so you don't pass on my secret

.

Stan

**NRG** · 26-02-2009, 08:24

Originally Posted by Sensimilia

You have to turn them round as indicated in the MOD21 sheet. The sound difference is going to blow you away.
If I have to tell you why, I'll have to kill you afterwards just so you don't pass on my secret

.

Stan

...Because the caps came stuffed the wrong way 'round from the factory?

There's 3.55v accross those caps (on my example) +5.5v opamp side and +1.95v on the other side so the caps need to be switched around as they are 'lytics.

**James G** · 26-02-2009, 08:48

Originally Posted by Sensimilia

You have to turn them round as indicated in the MOD21 sheet. The sound difference is going to blow you away.
If I have to tell you why, I'll have to kill you afterwards just so you don't pass on my secret

.

Stan

Oh wow, ok. I'll switch them around. Good looking out to ultraviolet who spotted my mistake.

**NRG** · 26-02-2009, 08:54

....Ah! I see the PCB Legend is incorrect....

**NRG** · 26-02-2009, 08:56

Originally Posted by jgarner71

Oh wow, ok. I'll switch them around. Good looking out to ultraviolet who spotted my mistake.

You didn't make a mistake, its not clear from the MOD21.pdf the need to rotate the caps and if you just followed the PCB legend then you will set the caps the wrong way 'round....just like I did.

**leo** · 26-02-2009, 10:35

Single rail supply isn't it

So as a guess there could be more people thats tried the mod21 and fitted the caps the wrong way around

**James G** · 27-02-2009, 13:51

I turned the caps around and like Stan said it has made a big, big difference. My dac is no longer "wrecked"! Thanks again everyone.

**kalozois100** · 28-02-2009, 07:07

Originally Posted by leo

Single rail supply isn't it

So as a guess there could be more people thats tried the mod21 and fitted the caps the wrong way around

My electrical engineer fitted the caps in the mod21 part one so positive is connected to positive and the negative to negative. it sounds good now but you've all confused me with the comments about switching the caps around .What does this mean?

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