I recently built a TXRX Ensemble kit.. I had a similar problem. I found it helpful to carfully recheck the solder connections and to cleanaround the pads that were not grounded with a dental pick.. after I did this i was able to get the required 2.5v readings needed.
Date: Sat, 29 Jan 2011 16:58:50 +0000
Subject: [softrock40] rtx build ensemble help
I started building rtx ensemble, are the into session dividers,
I do not have, now , the scope to check the waves, I made the
test voltages on U5 AC74, I mounted upside U5 which corresponds to the A of AC74 to pin No. 1
Voltage are all accurate except the ones on pins 3 and 11, here the voltage is from 0.98 to 1.32v. If I remove the USB plug, back to 2.50v. Resistor R13 and R14 is ok.
I have read other posts on this group but have not found anything
like to help.
Someone please help me?