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Old 16th January 2013, 11:59 AM   #1121
hesener is offline hesener  Germany
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Quote:
Originally Posted by Marra View Post
My boards are powered and sat on a shelf with voltages as posted by Alfred in his replies to quan and pin 6 on one fluctuating around 0.5V and the other 1.5V.Outputs are fluctuating around 200mv.hopefully things will settle after a few days.Would it be better to case them up to aid things in settling?
these values are just fine. no need to case them for settling, its the elcaps forming (the voltage across them is fixing the little holes in the oxide, which is the cause for the leakage currents that elcaps tend to show fresh out of the bag).
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Old 16th January 2013, 12:48 PM   #1122
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Quote:
Originally Posted by Marra View Post
My boards are powered and sat on a shelf with voltages as posted by Alfred in his replies to quan and pin 6 on one fluctuating around 0.5V and the other 1.5V.Outputs are fluctuating around 200mv.hopefully things will settle after a few days.Would it be better to case them up to aid things in settling?
One could just plug in the caps to a LM317 and live them under charge at nominal voltage while soldering the other components

This would save loads of time fiddling with the offset...
And will form caps faster
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Old 16th January 2013, 12:50 PM   #1123
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Quote:
Originally Posted by Marra View Post
Outputs are fluctuating around 200mv.hopefully things will settle after a few days.
Have you scoped the outputs?
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Old 17th January 2013, 06:15 AM   #1124
quan is offline quan  Australia
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Hi guys, could not wait . Finally plug it in . Loading resistor 150R . Catridge mod esc stylus midas body 103, apparition tonearm N GARRARD 301. The sound is relax but detailed and tonality is very good. The main problem is hum in both chanels .
quan
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Old 17th January 2013, 06:16 AM   #1125
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Look at grounding Board do not pick up much so got to be cables
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Old 17th January 2013, 06:39 AM   #1126
quan is offline quan  Australia
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Hi Sandro, i will need to study the grounding scheme .
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Old 17th January 2013, 08:57 AM   #1127
Marra is offline Marra  United Kingdom
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Quote:
Originally Posted by analog_sa View Post
Have you scoped the outputs?
No scope just a couple of dmm's.
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Old 17th January 2013, 10:35 AM   #1128
PMA is offline PMA  Europe
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If someone wants to DIY a thing that is so complex as this one, he absolutely needs a scope. DMM is good quite for nothing, it is only an elementary tool. Don't believe those who tell you that as a DIYer you do not need a scope.

You do not need to buy an expensive instrument. It can be just a USB device like this:

USBscope50 1Gsps/75Mhz USB pen-style DSO (Digital Storage Oscilloscope), Synchrotech

But even stand alone instruments are not expensive:
Uni-Trend Group Limited

Every serious DIYer should have a scope, otherwise his results are just accidental.
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http://web.telecom.cz/macura/audiopage.html
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Old 17th January 2013, 01:55 PM   #1129
Marra is offline Marra  United Kingdom
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Point taken.
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Old 17th January 2013, 02:05 PM   #1130
hesener is offline hesener  Germany
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Updated assembly guide with the latest proposals on compensating the CCS in the power supply section if needed, and the RIAA time constants.
Attached Files
File Type: pdf Paradise R3 assembly guide.pdf (722.5 KB, 279 views)
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