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First of all. You're supposed to measure across R1 and R2.
Forget the TP_GND1 and TP_GND2 - we don't need those right now.
Measure between TP_VIN+ and TP_CCS+ (mV) - reading:
Measure between TP_SHUNT+ and TP_OUT+ (mV) - reading:
Try turn VR1, can you change the above values ?
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Thanks AVR300 this is what i am getting, as for changing the vr1 no changes happen when i adjust.  
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Check all the transistors, both small and the big once at heat sinks. Are they all in the correct positions?
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Sorry avr300 been busy with getting married and stuff. I think the pcb is stuffed, tried originally using lead free silver solder and I was consistently getting frosted looking joints. So I resoldered using leaded solder most look fine (the pics i uploaded are the leaded ones) however some look like the pad has lifted.
So I'm thinking stuff it and get a new set they aren't that expensive.
Will post again in the following weeks.
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I don't see any pad lifting. To me it looks ok.
Have you double checked all transistor (correct location) ?
Try uploade a good sharp (non-shaken) picture of the component side.
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And by the way - congrats.
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Those two looks suspicious. Again, pictures of component side (the other side) edit: never mind the first one - that's ground (sorry). Edited by user Sunday, January 19, 2014 10:32:47 AM(UTC)
| Reason: Not specified avr300 attached the following image(s):  cut1.JPG (37kb) downloaded 15 time(s). cut2.JPG (25kb) downloaded 14 time(s).You cannot view/download attachments. Try to login or register.
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Ordered another set, let you know how i go buddy.
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I don't see anything obvious.
As long as you ensure all transistors are in their correct positions.
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With the soldering and resoldering, it's quite possible the trimmers were overheated and killed.
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Hi Brian
If the trimmers were fried would I still see a change when I turn the dial and measure directly at the trim pot?
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Originally Posted by: avr300  I don't see anything obvious.
As long as you ensure all transistors are in their correct positions. I couldn't see anything either really, I double checked the qp and qn and they were all correct. I think Brian is right I really tried to get the lead free silver solder to work with multiple resoldering on many parts. As well I had to go to 390+ degrees to get some success. I really did learn a lot through this kit but maybe I was doomed to fail when combining that this was my first go at soldering and I chose a solder that perhaps is not as easy as a normal leaded solder. I remember so many times that I kept resoldering because I kept getting a frosted joint. Then after a while I switched to a leaded solder and the new joints looked fine. So to gain some more experience I did an audiosector lm3875 kit which is now playing on my yamaha ns1000ms beautifully. For such a simple amp it really is keeping up with my weston acoustics kt120. I will get this kit finished even if it kills me. Also what usb to i2s would you recommend? Waveio perhaps?
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Originally Posted by: feckie Hi Brian
If the trimmers were fried would I still see a change when I turn the dial and measure directly at the trim pot? No. At least not within the specification of the trimpot (0-20k ohm) With the trimpot in-circuit it is more difficult to measure due to the fact that the whole circuit affect the measured value. But you will still be able to measure a change when trimming. When you get the replacement kit up and running it would be easy to measure and compare the two to find the glitch. usb to i2s - I don't know, I'm using SPDIF only.
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Originally Posted by: avr300 Originally Posted by: feckie
When you get the replacement kit up and running it would be easy to measure and compare the two to find the glitch.
i was thinking that as well and if by chance we can fix the glitch whatever it may be then i will have no choice but to upgrade it to mono 
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Well i have completed the new set and they work like a charm, resoldered the questionable ones and they work fine :).
These spare PSUs will be used for the USB to I2S controller so i dont feel like i lost out much.
I will no doubt create another thread about using a sidecar, S/PDIF 4 and waveio ;)
Thanks for your help guys much appreciated.
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